HUGE PROBLEMS NEED HELP!

[Guest cmckeon]

Hey every one I have a 1989 Nissan Pathfinder SE with a VG30i with a 4 speed auto, and I have been have problems starting (but it tries to turn over) also the RPM gauge goes nuts while driving down the road, and the engine tries to die when this happens, if anyone could help it would be greatly appreciated (seeing this is the only vehicle for my family right now)

 

 

P.S. thanks for you help

[dgly]

Have you checked the ECU codes? Could be one or two problems at same time.

 

Once I had some very strange problems due to the Throttle Position Sensor. Car seemed ok at idle and going slowly, but when I started to give some gas (for above 35 mph driving) the rpms would oscillate radically - engine would sputter and it seemed like the transmission was going to die. In my case, I dont think there was an ECU code, it was conneted but the coil spring was not hooked to the stem.

 

I dont believe this effected starting though. Perhaps (since it is the winter time = cold) you could also have a problem with battery or could be starter etc

 

Check ECU codes

Dont rule out that this could be 1 or 2 problems

Read in Haynes/Chilton how to check throttle position sensor - basically you backprobe connector and check voltage given at idle vs when you open the throttle - books should tell you which pins to use and what Voltage levels you should be seeing.

Edited January 26, 2005 by dgly

[94extreme]

weak starting is normally a bad battery or it could be something in the starting cicuits/systems.. the whacky gage maybe related to electrical ghosts but check ecu for starters and we'll see....

[Guest playhardtte]

Start out with something as simple as the fuel filter.playhardtte@yahoo.com