Sorry but you can't rely on fault codes or fault code readers.
If you have a problem it is best practice to initially forget the electronics and begin with the basics - visual and physical checks as if there was no electronics. Verify the presence of fuel and good delivery and the presence of a good spark, etc. etc.
Your car may be old but it is young enough to be fitted with an immobiliser. Immobilisers can be unreliable...
If you get a fault code it is a clue and nothing more. Don't spend money until the sensor, distributor or whatever has been checked and found to be faulty using meters, scanners, live data, oscilloscope...
When you get a fault code, erase it and try again. If at any time test results are inconsistent then remember when a code says a sensor is faulty it often means the sensor and/or the circuit, which could mean wiring, connectors or even the ECU. An ECU is quite capable of telling lies, they aren't bullet-proof and can sustain damage in all sorts of ways but continue to work satisfactorily for a further year or more and then suddenly for no apparent reason begin causing trouble.
No way should you need to replace every sensor or need 3 distributors. It is hard, tedious work checking an entire management system circuit for continuity and the cleanliness of every single connection but if the results of testing are inconsistent the ECU must be suspected and due to the expense, the groundwork must be done before replacement can be justified.
SOURCE: 1999 Pathfinder shuts off while running.
It could be one or all of 4 sensors. the MAF, the MAP or the idle position sensor or dirty fuel injectors. the fuel injectors can be cleaned with an over the counter fuel injector cleaner bottle that you pour in your tank.If these do not fix it, it will be the EGR valve or a vacuum leak to the EGR. Check the fuel injectors first by buying the cleaning product. then check for vacuum leaks around the Fuel injector housing. Buying some starting fluid and spraying it over the small hoses while the car is running will make the engine stall when the fumes from the starting fluid get into the system. then have it scanned again to more or less tell which sensor it is. it could very well work with the fuel injector cleaner.
SOURCE: 1997 nissan pathfinder shuts off right after starting
There is a relay on the rh passenger side kick panel above the automatic transmission module that is controlled by the ECU through the MAF sensor that controls your fuel to the engine so the air / fuel mixture is correct. I fixed a pathfinder one time with a similar stalling problem.
SOURCE: 97 nissan, replaced distributor, knock sensor
Well i advice to bring it to the dealer,definitely the E.C.U must be scan,that is the simple way to solve it
SOURCE: the spring on the fuel door (2008 Pathfinder) has
these springs are a bare to install. i take the door off the truck to replace the spring aka install it back. its a pain in the a** to install those. take the door off the vehicle which is attached with 2 bolts (8mm socket or phillips head screwdiver) and re-install spring on the bench. remember bare to install.good luck.
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