1986 Nissan 300ZX Car running rough at cruise

Tiny
LLAMAFEEDER
  • MEMBER
  • 1986 NISSAN 300ZX
  • V8
  • 2WD
  • MANUAL
  • 69,000 MILES
I had some electrical problems on this car. Replaced the ECU (or ECM. What ever it's called) and it ran great for a few days. It sat for awhile and lately have been driving it and it blubbers. You can play with the accelerator to get it to run better, but in 4th or 5th gear is no good at all. Don't know if I should be looking at fuel or electrical. Alternator is less than a year old. Put new battery cables on. Just dunno.
thanks
LF
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Sunday, July 11th, 2010 AT 10:57 AM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Engine running rough or misfiring can be cause by the following:

1. Defective spark plug
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Throttle position sensor.
11. Idle air control valve
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Sunday, July 11th, 2010 AT 8:34 PM

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