96 Maxima V6 wont start THIS ONE IS REALLY TRICKY

[jzmuda]

OK i have a 96 nissan maxima 5 speed 120K miles and here is the problem: the car cranks and cranks but it wont start, checked the fuel pressure and it was around 28psi so it seemed low. So we replaced the fuel pump and filter and now it will go up to 30 psi, the battery is brand new and battery charger is plugged in when we crank it, sometimes it will try to catch but it back fires and it keeps cranking. After about 5 minutes of cranking and popping we managed to get the car running(once), it seems that it runs only on few cyclinders even after it warms up(after it was warmed up it didnt want to start either). The car always ran good but it was hard to start but now it won't start at all. Is there anything I can check for that these cars are famous for having issues with, i am very mechanically inclined and worked on cars all my life, I have over 100 engine swaps under my belt and this one has me stunned, I need someone that knows this car inside out and maybe can give me sensor readings, I have access to a scanner to get the codes or paramaters from the sensors. PLEASE HELP

Jerry

[sonnylane]

I have the same problem with my 96 maxima.Have you found any answers?

[jzmuda]

sorry not yet

[tech22]

Are there any codes stored in the ecm?Sounds like a bad crank angle sensor but don't want to send down the wrong path.You really need to scan the ecm and get back to us.

[sonnylane]

I have checked the codes on mine but it is not showing anything.The last shop I had it at told me they had to reprogram the computer and that fixed it for a while but it just started acting up again so I found another ecm and it didnt change anything.Thanks

[sonnylane]

Would a bad crank angle sensor cause it not to start for a while?It will eventually start but it takes a long time and always kills the battery.

[ritter]

There are 2 crank sensor. [the computer will tell you ]
Is the car start o.k after it's warm up ? [then it's tempt sensor that tell the computer]
Check your fuel pressure regulator [leaking pressure]] Most common problem!!!!!!!!!

[sonnylane]

It will run fine after it warms up,I have replaced fuel pressure regulator but I dont know if pressure is still good. Thanks for the info.

[sonnylane]

Check the POS crankshaft sensor jzmuda,it is located on the bellhousing and is pretty easy to get to.Pull it out and clean the tip off,maybe that will fix it,it did mine.

[ghufraan]

had the same problem on my 96 v6 maxima

i had a bad coolant temperature sensor
i had it replaced and hasnt bothered me since

[jzmuda]

This car is driving me crazy, I cleaned all the grounds everywhere, both crank position sensors and cam sensor were replaced, wires don't seen to be cut anywhere. I am at a loss here It cranks and cranks, backfires in the intake bunch of times and no start, intake gets hot and not the exhaust manifolds. I NEED HELP I'M LOST HERE

Jerry

[ritter]

Timing ????

[bobflood]

I had a similar problem, though not quite as bad as yours and no backfiring. The crank sensor on the bellhousing fixed mine up.

[wau]

Jzmuda,do you still use the original register key,or your key has been damage,because there are a NVIS(nissan vehicle immobilizer system) need this key which has been register carry the data and match to the ECM to start,other wise the blocking function will kick in and you never can start the car.Check your keys. If you do not have the original key you still can solve the problem : by tow your car to local nissan dealer show your ownership paper(which should with your name and the ID# of this car) dealer can match a key through the NVIS unite and car ID# and this key can start the car right the way.