Altima Angst

rough
stalls
nissan
altima

#1

Car: 1997 Nissan Altima GXE 4cyl, 82K miles

Problem: Occasional stalls at idle, rough running at medium speeds, stumbles, hard starting, all intermittent. Problem for over a year, no obvious connection with time of year, cold/hot, wet/dry, etc. Has gotten only slightly worse over time.

I Tried: Replace spark plug cables and plugs. Replaced fuel pump relay.

Mechanic Tried: Checked for computer codes - none. Replaced distributor. Checked fuel pressure - OK. Talked to Nissan mechanics - clueless!



Any ideas out there? No, it’s not oil in the distributor!


#2

We had a problem lke this. It was carbon plugging up th exhaust gas recirculation system. We had codes tripped when it ran rough, but this could still be the problem.


#3

Intermittent problems are tough.

I would look for poor grounds on the computer/fuel control system.

I would suspect that perhaps the cold start enrichment system occasionally hangs up causing the car to flood. I have had that problem on a couple of different cars.


#4

put the PCM,and the main relay in the freezer for 2hours,one at a time and see if that changes anything.

just remember one at a time ,so you know which one made the difference or not.

good luck.

wouldnt say the dealer techs were clueless (just tight lipped)and for obvious reasons.KEEP THAT UNDER YOUR HAT,LMAO!