WHAT WOULD CAUSE MISFIRE OF #2 AND #3 CYLINDERS?

  • Tiny
  • saturntech9
  • Expert
  • 28,434 posts

Keep me posted on how it goes.

Was this
answer
helpful?
Yes
No
Tuesday, January 31st, 2012 AT 6:40 AM
  • Tiny
  • 1999sl2
  • Member

I bought a new ignition module, installed it and that did the trick, but not the idle is high and erratic. I removed and cleaned the spark plugs and removed and wiped off the O2 sensor on the header, figuring that the plugs and sensor might have gotten fouled with unburned fuel. No joy. Is there another valve/sensor that would have been fouled by the unburned fuel, or do you have other thoughts?

Was this
answer
helpful?
Yes
No
Saturday, February 18th, 2012 AT 11:10 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,434 posts

What codes do you have now?How high is the car idling?How many rpms?What kind of spark plug do you have in the engine?Not platnuim ones I hope?

Was this
answer
helpful?
Yes
No
Saturday, February 18th, 2012 AT 4:23 PM
  • Tiny
  • 1999sl2
  • Member

No check engine light, yet. 2000, but up to 3000, sporadically. Stock Saturn dealer ones (?)

Was this
answer
helpful?
Yes
No
Saturday, February 18th, 2012 AT 4:39 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,434 posts

With that high of a idle I would check for vacuum leaks first.

Was this
answer
helpful?
Yes
No
Saturday, February 18th, 2012 AT 10:14 PM

Please login or register to post a reply.

Similar Questions