Operation and maintenance of Nissan Laurel. Nissan Skyline R34, Laurel C35 with RB20 de Neo L and B. Power loss, Bad Dynamics Sergey Shashkov, Director of the Boomer Car Service
And this is the FAQ, or, as it is called in Russia, Fakh via Nissan Laurel. Here are collected answers to frequently asked questions from the category "How many do not answer them, but will still ask anyway" :-) Most of the information came here from various forums on Nissan Laurel cars, including from ours:
- What is the drive timber in the RB - belt or chain engines?
In the RB engines, the timing belt drive is used, no chains! - What is Neo?
Neo - Abbreviation from Nissan Ecological Oriented. Under this brand, the recent generation RB engines were made, which became more environmentally friendly. Contrary to common misconception, the designation NEO has nothing to do with the system of direct fuel injection, which Russian motorists are so afraid :-). - How to find out what my RB is NEO or not?
If you have a laurel in the 35th body, then your engine is NEO. Well, in general, on these engines right on the decorative lid, it is written in large letters: "neo" :-). - Where is its number on the engine of the Republic of Belarus?
The room is knocked down on a special platform on the right side (if you look at the engine in front), behind the outlet collector, closer to the engine connection with the box. - What threatens the engine of the RB of the timing belt?
Unfortunately, without consequences, it is unlikely to cost. The valve and guides will be wound. - What timing belt is better to put on a replacement and what is his resource?
Definitely, it is best to put the original Nissan belt. His resource is 100,000 km. They are everywhere and are not so expensive. - What do you need to change with the timing belt?
Together with the timing belt, two rollers are usually changed - stretching and bypass. All other "nearby details" change at their discretion, depending on their condition. That is, no other devices (for example, the pump) are not required to change! - Engine "Troit" ("Chetverit", "Plenteit", etc.) - What is the reason?
In most cases, the malfunction of the ignition coils! At least, it is for them to pay attention first. The coils are considered a "patient place": there are many of them (for each candle - their coil), and they are expensive :-). - In summer, when the air conditioner is enabled (especially in traffic jams), the engine begins to warm up, and the air conditioner is turned off. From what?
Air conditioning is turned off automatically due to the fact that the engine temperature begins to increase (in this way, the tricky Japanese automation is trying to reduce the load on the engine). But the engine overheating can occur due to the misery of radiators insects, Pooh, etc. Drying (unless of course the viscous food and the cooling system). Radiators must be periodically cleaned (purging, rinse). These issues are discussed by laurels and. - What candles to put in the Republic of Belarus?
"Native" candles are platinum, NGK production, Marking PFR5G-11. In general, it is possible to put simple candles, and iridium, and platinum-iridium - who is not sorry for what the money for what money is not sorry for :-). - Engine RB eats a lot of gasoline - so everyone, or just me?
Yes, the engines of the Republic of Belarus are known for their appetite :-) If your consumption in summer is about 14 - 15 l / 100 km, then it is a prakically "standard" :-). That is, it is not necessary to beat the alarm and take any urgent measures - the situation is unlikely to improve. - The arrow on the fuel level indicator in the gas tank too quickly lowers down, is such a mad consumption?
Do not worry :-) Unfortunately, this problem is inherent in most laurels. Almost all the owners note the fact that the fuel level sensor in the gas tank cannot be believed - it is botherless! - What oil pour into the Republic of Belarus?
Only good :-) There is no definite answer. Recommended by the manufacturer - 5W-30. But in practice, lavetles are poured different oils - and viscosity (5W-30, 5W-40, 5W-50, 10W-40) and based on (synthetic, semi-synthetic), and by producer. And, it seems, everyone is satisfied :-). - How many oil is placed in the engine of the laurel?
Approximately 4.2 liters. In any case, buy a five-liter canister, four-liter will be a little! - What melt pour into an automatic box?
Theoretically, the box will work on any aliest class Dexron III. However, the best option than the original alien Nissan ATF Matic Fluid D is unlikely to come up with! - How many things need to be replaced?
The total volume of the clad in the box is about 8 liters. However, if you change the usual "plum method", you can change no more than 4 liters. - Switching gears in automatic transmission (especially with the 1st to 2nd) occurs noticeably, a small push is felt. This is normal?
Yes, there is an easy push when switching speeds in the automatic transmission there are almost everyone. Apparently, this is the norm. Some argue that with a slightly overestimated level of the Zhi in automatic transmission, such shocks are felt weaker. But this is their personal opinion. - Why do you need POWER and SNOW modes, the inclusion button is located next to the ACP lever? Should indicates the operations of these modes?
There should be indicators on the button itself. If you are not glowing, but, moreover, you do not see the difference in the modes (read the logic read below), then take the lining around the automatic transmission lever, you may simply do not connect the button of the button.
Now about the logic of the work:
"POWER" mode - switching to the highest transmission occurs when they bles of rolling turns (as in normal mode, specific turns depend on the intensity of pressing the accelerator pedal); Thus, the maximum power and torque of the engine are selected, smooth overclocking, etc.
"SNOW" mode - switching to the highest transmission occurs with smaller speed (again, than in normal mode, specific turns depend on the intensity of clicking on the accelerator pedal); Thus, it is excluded to slip leading wheels caused by excessively large torque filed to leading wheels. Also in the "Snow" mode, the movement of the car begins with the second transmission, according to the same reasons (attempt to reduce the wheelchair). It is intended mainly for riding in winter, on snow-covered / slippery tracks. You can also use this mode to save fuel, but do not forget that in this mode the car begins to "shy" (this is just contributed to the start of movement from the second transfer (which is quite difficult in itself) and switching to higher transmission at low revs The crankshaft (the maximum power is not produced)).
And here are still patterns (templates) of gear shift under different positions of the automatic transmission mode button with varying degrees of pressing the accelerator pedal (on all charts of the lever in the "D" position, OverDrive position) - When starting the engine, the fan is very noisily - is it normal?
Yes, it is normal. The fan starts the work very noisy, but it lasts just a few seconds, after which it goes into normal operation. - Fan works constantly - so everyone?
Yes, on our laurels is not an electric fan, but a fan with a Viscounts. It rotates at different speeds, but is constantly in motion. - Is it possible to put amusement equipment for the engine RB?
Can! With good equipment of the last generation (with a distributed injection), the engine works perfectly, even in power does not lose anything. The only "but": Such equipment is quite expensive, so think - do you need it specifically? - Where in the C35 laurels there is a diagnostic connector Consult and why is it needed?
The CONSALT diagnostic connector is at the bottom of the wheel, a little left of the hood cover opening lever. It is hidden under the lid, and falls out, if this cover is hiding something. From the name it is clear that the connector is necessary for the diagnosis of the car. In particular, it is for it that the VCONS diagnostic computer can be connected. In addition, the connector is used in self-diagnosis. - Where in Laurele C35 is the regular antenna?
The regular antenna is located in the upper and lower part of the rear window in the form of pasted strips. Outwardly, they are similar to the glass heating strips, that's just no shine :-) Antenna amplifier (such a special metal box :-)) Hidden under the decorative lining of the left rear rack. - Where are the fuses in Laurele and what are you responsible for?
In the laurels two blocks with fuses and relays: one - under the hood, the second - in the cabin, in the area of \u200b\u200bthe right driver's leg. In the rotor block, the belonging of the fuses and the relay is indicated in English, there it is still possible to somehow figure out :-) In the salon block, all the designations are in Japanese, which means without help, you will disobey where what. In general, see here: Fuses in the cabin C33 (RB20E), fuses in the cabin C35 (RB20DE NEO) - Where in Laurele C35 Are there salon filters?
Salon filters are always hiding from us in the same place - for the glove compartment. They change fairly easy! - On the dashboard during the movement lights the "SLIP" indicator - what does this mean?
The presence of this indicator is the privilege of all-wheel drive laurels. During the movement of SLIP, it informs about it occurs at this point to slip or starting driving. - What regular speakers are installed in the rear shelf of the 35th body and how to get to them?
Stater speakers in the back shelf are round Clarion, 16 cm. To get to them, it is necessary to remove the entire rear sofa (unscrew only four bolts - two by 12 and two to 10), then decorative lining on the rear racks (just neatly disassemble around the perimeter Because it is held exclusively on the clips), then the stop signal, well, and then - the regular plastic-woolen :-) The shelf (also unfastened). The speakers themselves are screwed to the metal shelf with four bolts for 10. - What if the RB engine does not start after washing?
This happens. The reason is one - water in the process of washing falls into different hidden places and remains there. Look for her first here:- Draver. Remove the slider and the cover under it. There is an optical system standing, it must be thought out.
- Candle wells. They often accumulate water.
- Nozzle connectors. They are oriented up, and the water does not even evaporate there.
- How to change brushes on janitors if they do not rise?!
First, the opening of the hood cover does not solve the problem - the wipers still do not rise :-). Secondly, the easiest solution is to turn on the wipers, and then turn off the ignition at the moment when the wipers are at the top point. Ready - Now you can change brushes. - What are the parameters of the wheeled disks on the laurel?
PSD - 5x114.3, CSO - 66.1 mm, departure - 40 mm, width - 15x6jj or 16x7jj - What are the values \u200b\u200bof regular tires and pressure in them?
For 15-inch wheels: dimension 195/65 R15 or 205/60 R15 91S or 91H; Pressure 2.0 atm. in all.
For 16-inch wheels: dimension 205/55 R16 89V, 2.0 atm pressure. In the front, 2.2 atm. In the rear.
Japanese tire parameters
Another signator (from the manual on C35) - What is the front strut, how does it look and why is it needed?
The front strut is a metal stick :), installed under the hood between the mounts of the racks. This is how spacers look at 35 laurels:
Example №1, Example number 2
Attention - struts for all-wheel drive and rear-wheel drive laurels different fasteners (Miscellaneous openings)!
In a quote from one of the automotive sites (may the author forgive, it is unknown with what) explains the purpose of this item: "Installation of the strut is a mandatory element Perfomance Tuning. No wonder, without exception, sports cars are equipped with spacers. The car with a strut has better handling and is easier turns. After installing the strut, the car is more accurate and faster reacts to turning the steering wheel. Improving controllability is achieved due to the "binding" of the upper parts of the suspension racks, which are in the standard state only below the transverse stability stabilizer, and from above remain relatively "free". Therefore, when turning the suspension racks, a little "walk", as a result of which the car's reaction to the steering position becomes less clear and more "smeared". The strut will also correct this deficiency of the standard suspension. Also the strut is an important element of passive safety, increasing body rigidity and creating an additional obstacle to the deformation of the engine shield during frontal impact. "
Installation of the spacer on the laurel is actively discussed on our forum.
The section continues to be replenished!
Alexander Ryazantsev, the owner of Nissan-laurel (N-Laurel), 1994, G.V., V-2, automatic, gasoline, rear-wheel drive
This car I own half a year, very satisfied.
prosNissan-laurel (N-Laurel) :
- Fuel consumption economical: 15l - city, 11 - track.
- Salon inside amazing, rich velor, chrome door handles outside and inside.
- Comfortable electron furnace, the trunk buttons and the gas tank hatch are not at the bottom under the seat, but on the door handle, more convenient.
- The car confidently holds the road, the handling "on the top five".
- Thanks to this engine, the car accelerates confidently and sharply up to 120 km / h.
- It is convenient for me the five-speed automatic.
- It goes smoothly, not swing and not tremble.
- The suspension is not too tough, but I won't call it very soft.
- Comfortable cup holders, "bursting" from the front panel, bright, large climate control screen and the control buttons are also very conveniently located.
- The handbrake, though a foot, but the mechanism of unlocking damn is comfortable.
MinusesNissan-laurel (N-Laurel) :
- The threesome are already closely.
- Plastic headlamps, quickly dull.
- Cold car, i.e. In winter, it is clearly lacking in it - the stoves are not enough.
- Sometimes there is a problem with parking.
Expert opinion: Engine Unpretentious and reliable!
Sergey Shashkov, Director of the Boomer Car Service
- The engine is unpretentious and quite reliable, and most likely rubbed. But it is not necessary to allow its overheating and lower oil level. There is a problem in narrow channels.
- Watch for candles to "not shilo".
- It is recommended to periodically carry out the maintenance of the engine: replacing the timing belt and the glands on the lobul. If the glands "run", the refover will be raw. Then there is the likelihood of oil hits on the timing belt - the belt loses its properties and requires a mandatory replacement of the timing.
- In the rear drive, the gearbox with the LCD function, so that the car well shows itself on the ice.
- Hodovka is not easy, so pay attention to the ball, silent blocks on levers, steering tips, traction, wheel bearings.
- Weak place - racks, but they are repaired.
- Always check the oil in the gearbox.
- Pay attention to the cardan, crosses, anthers on the drives.
This Council is dedicated to all owners of Nissan Laurel cars - there are systematized excerpts from the forum on all discussed operations - problems and their solution, consumables, spare parts, etc.
In our city, and in the country of Lavriks, it is already running quite a lot ... That is why our colleague Victorz created on the forum very much.
The topic has grown and beginners in this topic to find information on their problems is not easy ...
To help all owners of the laurel, I had a thought to summarize everything about what was stated in the topic on the forum, lay out all the necessary and interesting facts about our cars in one place and replenish as needed.
The information is conditionally divided on the themes:
Engine
-Electrical:
About the ignition: http://wiki.japancar.ru/index.php/Electronic_Oblock_
candles by one platinum data, according to other iridium. y (cactusoviode) PFR5G-11
NGK Iridia, if you order in Toyota - 630 rubles Candle and wait, in the city you can find from 400 r per candle. Buy better in large checked stores. I took myself recently iridium-platinum NGK BKR5EIX-11P (reg, kent) (a little better just Iridiyev) with my characteristics in the catalog cost 500 rubles Candle. Changed himself. (REG)
coils
i tell about the coil. I studied them already along and across.
the main purpose of this device is to prepare 12 volt at the 20000 volt (approximately). Physically, the device is the primary winding with a small amount of turns that is connected to the coil control board on the transistor which in turn - to the computerobile computer. The secondary winding has several tens times more turns and physically with the primary winding is connected only by an electromagnetic field, and it is connected directly from the spark plugs. Those. Principle of operation of a simple transformer (remember physics for the 10th grade)
The oscilloscope determines the malfunction of the transistor in the coil - not that signal shape issues. The main reason for the failure of the transistor - overheating. With this malfunction, the coil is constantly burning "Check" light. The people in Moscow repairs such coils by replacing the transistor. Repair price - 1000 rubles per coil.
Kent1 wrote (a):
they will be ringing just the coils and determine which non-working ...
This method is determined by the breakdown in the primary winding of the coil. The resistance between the contacts is stupidly measured and the table is dominated by the table. "Check" can light up and shine. Repair IMHO is impossible. (see further)
The breakdown in the secondary winding of the coil is the most suced. With this trigger, the car is not always the machine, the power is also not always, the "Check" light is not lit at all, etc. The high-voltage spark is going where it is necessary - in the candle, then the plank body is attached to the coil, flashing the plastic coil sheath. Such a malfunction is revealed only by visual inspection of the coil - on the body on the plastic, such a thin distiller of the Whisper Plastics, and most likely on bending or sidewall of the case. IMHO REPAIR is impossible, although it tried to repair such coils of the people, judging by the forums of the low and autodide by pouring the casing of the epoxy and thorough cleaning of the coil installation site. IMHO effect will be short. As a goal - to sell the car can help.
Cause of winding breakfasts as primary and secondary - time and water. I knew the machine started after Kursheter was leaning through the radiator grille in the direction of the engine. Wash RB, VQ and TP engines. As they understand in Khabarovsk sinks, it is impossible at all. If you want to buy a car with RB and similar nonissan engines and see that the engines sparkle like eggs at the cat - it is worth thinking.
My coils just the third type of malfunction. I saw when the candles changed. As soon as I put new coils, I can show the appearance of my old coils with breakdown traces.
Kent1
10230 rubles 3 pieces with a VIP card by a comrade and a discount of 10%. I ordered in the store "Japancar", yes, this is the one where the Jurr (WD) was painted with counterparts on Avenirka, only an office on Kim-Yu-Chen. 7 days went, the price increases did not say anything
-cooling system
thermostat is the original 600r station wagon on ind. Changed himself - time - about an hour (REG)
-Mechanics
Replacing the fuel filter
how to pull up straps with photos
now I looked, there is a completely different Boyd closed, and so that the belt ribbon is not a single wrench.
the first drawing indicates the generator (where to look for it)
(blue isted a tight belt)
All to horror, just slightly weaken the screw appointed red, and then twist (via van), the screw indicated blue to increase the tension, then the preventive screw is tightened and everything.
Mainly turn off the engine!
-Release
I also had a burntable resonator, it simply embroidered cold welding 2 * 130r, and the problem as they say decided. (Dimas)
the drive oil carrier was found on the 20r station industry in the Universal (Dimas)
laying Clap Cover (Left) 650r (Dimas)
oil from crankshaft (suspected) 250р (dimas)
Machine
According to Manual - Nissan Matic D Fluid, and the most interesting thing is that in some places they write that it is compatible with D-III, and in others - that is not. To believe - H.Z. (Cactusus)
Replacing the automaton 4VD - 15100 rub This work + self-reduction machine itself (Dimas)
Hodovka
- Beggar
racks KYB (new) for 2000r per piece rear (Victorz)
the front said 2300 stand in the walled street. Industrial 8Atel. 27-58-14 (Victorz)
Independent replacement rear racks (Victorz)
-Kolodki
nishinbo pads, it seems like Japanese. Price 1200 p (zlodei)
Replacement:
Salon, Torpedo
for those who have Xanavi description of the buttons:
It manages the climate control system (including Conder)
it has a built-in MD player that tupits from the cold and reads wheels, and he only reads the pirated (store) discs, SDR and CPRV, it does not perceive.
If the disc is inserted and is not read in the lower left corner, a yellow rectangle is lit with any inscriptions on Eurita .. What will go like you go ..
if the disk is not on the same rectangle of the inscriptions on Eurite is accompanied by the letters of CD that, as I understand it, it means no CD or simply no disc.
So further:
by jamps:
1 - Open to extract disk
2 - Turn on SD
* Management of SD functions is carried out on the touch screen
3 - 4 Control of Navvalvigacia, I do not work and the buttons do not show how to show yourself
5 - Multifunctional Dazhopstik Vied works in a pair with novigation and shortly switches the channels to TV
The right side is all the climate control
6 - Temperature controller (the latter is displayed on the screen when the stove mode is active)
7 - on / off air conditioning with light bulb indicator lights Condet
8 - Automatic stove mode supports the selected temperature level, controls turnover and sliding nozzles
* Manual circulation and blowing nozzles is carried out by pressing the corresponding buttons on the touch screen
** In automatic mode, the stove fan is turned on only when the minimum engine temperature is reached (in winter it is very convenient)
9, 10 - apparently just manual control but the picture does not seem
11 - Turn off the climate control (Tank or Conder) either when the stove mode is turned off at one press highlights the control screen
12 - air supply only on the windshield, when the button is pressed, the air conditioner is automatically activated so that it is turned off by pressing the button 7
sleeping management
13 - Outer Air (Light Bulb Lights)
14 - Inner air (Light bulb is lit)
if both light bulbs do not burn then the damper is open by 50%
15- Include TV.
*** The sound as with the SD goes through the Kassetnik and is regulated on it or on the steering wheel
16 - Setting the screen, you can restrict the brightness of the screen in the day and night mode, some settings are activated only with envelope included
17 - yes x .. He knows what this nozzle can headphones.
I also want to upset you inputs on TV - no, there are only TMA wiring over and incoming.
One person said that just put the MP3 magnets instead of a regular big hemorrhage, that's what I think on this subject: you can still put it all but you will have to give up the standard TV (by the way he catches the sound of the 5th channel), SD and control on the steering wheel, and the Owl should work. (Dimas)
Removing a torpedo in order to replace light bulbs on the dashboard and clock: (Victorz)
Bodyman
front door terminal 100r (dimas)
Light bulbs: MedAllist until 2000. 4WD (Dimas) COCOL H4 700R
On Clubs (REG) COCOL H1
polishing (REG)
Nissan Skyline - Laurel R34 - C35 with RB20 De Neo L / B Motor - "Power Loss, Bad Dynamics
07.12.2008
Nissan Skyline - Laurel R34 - C35
with the RB20 de Neo L / B motor -
"Power loss, bad dynamics"
The increase in the automotive park in developed countries always puts the priority issue of ecology. The tightening of the exhaust toxicity standards is one of the reasons forcing automakers to produce new motors, and auto owners update their vehicles. To do this, there are various insurance mechanisms that include the redemption of obsolete cars, surcharge and the acquisition of modern, corresponding to new toxicity standards. This is the development of the scientific industry, mechanical engineering, technology, economy, etc. ...
Undoubtedly, the permanent race of raising the norms pursued by the government of developed countries is also an attempt to limit the import of foreign manufacturers, especially from developing countries whose cars due to lack of technologies cannot fit into certain norms (including "crash tests" ), but successfully sold in other developing countries.
This approach is clear - the government takes care of the preservation of jobs, the stability of the economy, protects its market from the low-quality goods (and not only a car), but at the same time fuel in this country corresponds to the highest class at all refills, the roads are called roads and high-speed regime exceptions. It is not entirely clear when there are no roads, instead of gasoline - ... .., the rules are not written, but Euro 4 for chosen is introduced as a pass at customs, although no one seeks to achieve it, and it is impossible. Just "delimit financial flows" - this is possible.
Part of advanced companies, anticipating the tightening of the norms of toxicity, puts considerable money in advance in research work, developing technologies that will further help them survive and compete.
One of these Toyota, Learn Burn Motors Series was an intermediate stage.
transition from stoichiometric combustion motors to depleted. If you distinguish them by the A / F ratio, then this is:
1. A / F \u003d 14.7
2. A / F ≈ 24
3. A / F ≈ 40
In the second and third case, for different models, you can put a sign "approximately" instead of "equally".
The second case includes the Learn Burn motors, and the third is D4 and all the analogies of Neo Di, FSI, etc.
To such "transient" motors of this period of group 2 can be attributed to the motor RB20DE NEO L / B (Learn Burn) which Nissan produced approximately from 1998 to 2002, until the NEO Di series came to replace.
What is the cardinal in this motor, in contrast to the predecessor RB20E and with the RB25DE Neo contemporaries, what did he get the prefix L / B? The main is combustion chambers, systems and phases timing, installation of the ignition system with higher energy, the introduction of mechanical flaps Swirl for depleted mode. A deep feedback on DC is introduced and one kV rotation sensor has been added. All this made it possible to "remove" with two liter row six 155 forces, putting in the norms of 2000 toxicity for Japan. Many people can ask - what is so little? But here the question is not in the number of "horses", but in how to put into the toxicity of the exhaust. After all, all declared machines with their declared capacity should be laid in these norms - otherwise it is impossible to move on the roads of public use on their own - only on the tow truck. Please - there are tracks, brought the car, paid for emissions of the reformed motor, headed the rubber - back to the trailer and in the garage, "tune" further. But on the streets you can breathe. In general, there are many ways to improve the ecology (but all of them imply high-quality gasoline to begin).
Here, the remission of the motor demanded to change the intake manifold - it became composite - to place the dampers Swirl terminating the access of the fuel-air mixture to one of the intake valves. (on this engine 2 inlet valves per cylinder).
Since the nozzle is facing the inlet valve, the fuel-air mixture is formed in the intake manifold, but the nozzle is facing one of the inlet valves, so the overlap of one channel increases the flow rate and improves the mixture formation. In essence, the flap overlaps only the air for one of the inlet channels, since the mixture formation is carried out in the second channel, where the nozzle is. The flaps are discrete - either closed at idle (low loads), or completely open. The malfunction of this system leads to a sharp reduction in the power of the motor. But the main one - with the introduction of such a collector Nissan received one problem not typical of motors in this series. Since in the car use separate "masses" and grounding points for power and signaling chains, then in this motor, the signal mass of the sensors has always been placed on the intake manifold in the area of \u200b\u200bthe coolant temperature sensor on the ECU (output to the upper radiator pipe). The collector is always screwed to the block and this connection never caused problems on the RB series. It is noteworthy that Nissan for the purpose of economy used three-wire DCs, in which the signal "mass" was a sensor housing. All this led to a change in the signal of the DC relative to the specified, namely, the appearance of the threshold.
Consider Figure 1, which comments on the appearance of such a code as DTC P0131 - Heated Oxygen Sensor 1 (Front) - Lean Shift Monitoring
On the left drawing ( fig. 1-1) - everything is fine, the DK signal exceeds the level of the rich rich mixture, whose threshold ECU has set 0.6 volts (for reference - a poign of a poor mixture of 0.35 volts)
If the DC voltage is higher than 0.6 volts, the "rich mixture", less than 0.35 - "poor". Such a hysteresis loop allows you to accurately distinguish operation in transient modes, as well as determine the inactivity of DC. Once the signal of the DC is constantly in the field of poor mixtures - it means there is a problem, the solution of which includes checking DC, nozzles, air supply, fuel pressure, etc. In addition, due to the savings on the 4-M wire, the signal "mass" is determined by the quality of the contact in the threaded connection as a DC with the exhaust manifold and the exhaust manifold itself. Why is it all due to the separation of power and signal "land". If a bad contact arose in the DK thread (resistance increased), then the resistance drops a certain part of the DC signal, lowering its value at a constant level. This leads to a displacement of the oscillogram down - Fig. 1-2 (The amplitude of the signal does not change), but the positive half-wave stops overcoming the upper threshold of the hysteresis of the trigger in ECU. Decision by management - "Restrain" DC. So to speak - " this is not always simply" Not only because of the availability, but also due to the inability to unscrew the DC without damaging it (dents on the case are unacceptable).
Another of the reasons p0131 - Bad contact in the signal "mass" - it is also recommended to reset. Installing the 4-wired DC solves part of the problems - the signal does not depend on the state of the exhaust manifold, but it has to be laid an additional wire.
All this is very good if you have a car diagnostics correspond to EURO OBD, in which there are codes for such cases. And if you have a 14-pin machine with a connector, an ECU which does not contain such codes - but in the Data Stream mode, graphically you have determined the non-sufficient level of the DC signal, overwhelmed the bolts of the signal land and DK - but did not help, then for this motor you need to "ground "Self of the signal land. To do this, it is enough to connect two points with a wire, whose cross section is not lower than 3 mm².
Photo 1 Establishing point of electrical equipment
Photo 2 Point on the intake manifold with which you need to connect the signal mass.
How to check the need for such an operation without a scanner that displays a real date - turn on the ammeter between these two points. If the current exceeds 0.2 A, then the design is needed.
What customer complaints met:
- « power loss after engine warming up, " - This is the main reason for the appeal. After reaching the temperature of 60 degrees, the fuel correction is significantly taken into account by the testimony of DC, and the owners complained that after warming up in motion, "the gas threw - pressed, and the car seemed like a trailer attacked"
- “turns grow, and there is no acceleration " etc.
Another estimates: - "Very sluggish overclocking up to 3000 revolutions, then it seems to be nothing."
From the messages in the forums, most of them changed the spark plugs five times from simple to Iridiyev Apexi 7 (with photo-reports about the work done), all sensors in a circle (ranging from MAF, etc., fuel pump, washing the nozzles who like ...).
Some managed to overdo the automatic transmission, and I personally met with such. There was no limit to surprise. It is clear - there are no errors (and they will not be on this motor), and the problem is unreserved. Just on the RB25 collector is one-piece, and here at the SWIRL SWIRL, the flaps are laying, in which the mass resistance increases due to oxidation. . In the Data Stream mode, with a graphical display of the O2 B1S1 signal and connecting points on the collectors, the signal immediately changes its appearance from NG to OK (Fig. 1) and the machine gets the full dynamics of overclocking, and the owner is surprising to one wire.
Hajiyev A.O.© Legion Autodata
Hajiyev Arid Omarovich, Moscow, Grove 7a, ul.ermakova, territory of 14 TMP, www.nissan-a-service.ru Tel. +79265256300, e-mail: [Email Protected] , Union of automotive diagnostics
