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Engine dies when outside temp is over 100 degrees.
Posted: Sat Jun 16, 2012 8:02 pm
by enzodude
2005 with 93k miles. Has been doing this for about a year!!
As long as outside temps are below 100 you can drive for hours with no problem.
But if you drive over 30 min. with high temps it will suddenly go to a rough idle and die. Will not restart until it has sat for 30-45 min. Then fires up and runs fine.
Have done the ECM relay swap but this has had no effect.
Fuel pump? It was replaced at 45k because of bad sending unit.
Possible bad crank sensor?
Any thoughts??
Posted: Sun Jun 17, 2012 6:22 am
by smj999smj
I doubt that it's the fuel pump causing this as it gets cooled by the fuel in the tank, but the only way to be sure would be to test the fuel pressure with a gauge while the incident is occuring. Crank or cam sensor failure is possible and can be temperature related and not always set a trouble code. Have you tried checking for stored codes?
Posted: Sun Jun 17, 2012 12:34 pm
by deermjd
Do the engine temps seem normal?
Posted: Sun Jun 17, 2012 5:24 pm
by enzodude
I do have a code reader and get codes for left and right cats being bad. No other codes.
The temp gauge is always in the normal location and the motor rarely give a warning before it falls to a rough low idle and than dies.
Posted: Sat Jun 23, 2012 1:28 am
by jking63
Maybe vapor lock in the fuel rail. Its pretty uncommon with in tank fuel pumps though...
Posted: Sat Jun 23, 2012 5:37 am
by smj999smj
Fuel injection systems don't "vapor lock." I would be leaning toward the cam and cranks sensors. They do tend to fail when the get hot, don't always set a trouble code, and when they fail, unburned fuel gets passed to the catalytic converter and can ruin them.
Posted: Thu Jul 12, 2012 4:21 pm
by enzodude
Got it to act up again and changed the crank sensor, Still would not start. However this time it would not start even when cold. Would start and run with starter fluid so I pulled the fuel pump. Checked it on a 12v and motor is bad. Going to try and replace just the pump motor and not the assy that's 450.00.
There is kit on ebay for $50 but not sure how good the pump is.
Posted: Thu Jul 12, 2012 6:43 pm
by deermjd
Given the age and mileage of your truck I would strongly recommend replacing the entire assembly. Youd hate to drop the tank again if the pump or fuel level sensor go bad in a few months. This fuel level sensor is notorious for going bad. Mine had to be replaced at 55k miles. Check out courtesy nissan parts or factorynissanparts.com. Should be able to find it for less than $450.
Posted: Fri Jul 13, 2012 6:27 pm
by smj999smj
I avoid aftermarket fuel pumps like the plague! Seen to many problems with them!