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-   -   2001 Pathfinder starts cold then dies...! Help Please..! (https://x.nissanhelp.com/forums/pathfinder/31563-2001-pathfinder-starts-cold-then-dies-help-please.html)

nh2004Max 07-08-2019 09:59 AM

2001 Pathfinder starts cold then dies...! Help..!
 
01 Pathfinder, 163,000, 3.5L, 4WD, started running rough, engine stop, barely made it home.
Then would not start at all. Seemed like lack of fuel or ignition problem.
NO ENGINE LIGHT...! No CODES...!
Went into the web and started to read about similar problems so check the coils and clean spark plugs, then ended up making replacements the following` order:

1 - IACV - performed relearn per EC manual
2 - TPS - throtle adjustment per EC manual
3 - Fuel Filter - Was able to drive couple of miles, took it to the Hwy, then next day, she idles rough and dies in my driveway .
4 - Fuel Pump
5 - Fuel Regulator
6 - Crankshaft Pos Sensor (POS)
7 - Crankshaft Pos Sensor (PHASE) - Was able to drive few miles then idles rough dies again.
8 - Camshaft Pos Sensor (PHASE)

Left to do are the two Camshaft sensors for the injectors and O2 sensors

Do not know what else to do. Engine starts from cold, gets warm, idles rough and dies.
Cannot get it to run at all....If I step on the accelerator she chokes and stops running

NO ENGINE LIGHT...! NO CODES...!

Any suggestions will be greatly appreciated....!

Thank you in advance...

nh2004max.

nh2004Max 08-03-2019 11:31 AM

Issue resolved - Hope this helps somebody....!
 
After spending a lot of $$$, decided to follow the steps on the EC manual and verified the O2 sensors, the cam sensors for the injectors, bank 1 and bank 2, and already had checked the MAF sensor voltage, which was about 2.2 Volts and steady ( you need a Multimeter for this tasks)

According to the EC manual the MAF sensor voltage must vary as the air increases when accelerating, this one was steady. Did not suspect that the MAF had anything to do with the problem as i already had replaced it before, but almost ready to give up and to bring it to the mechanic decided to get a new MAF sensor assembly from 1AAuto for less than $50, dealer price $508.46, got it in about 4 days (free shipping), installed it and problem solved, voila...!

Hope my experience can help somebody who may have a similar problem. :drinks_cheers:


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