intermittent idle problem
Thread Starter
Instructor
Joined: Mar 2003
Posts: 120
Likes: 0
From: Leesburg in
intermittent idle problem
I'm not sure where to look next. Sometimes when she's cold, sometimes when she's warm and I stop here and go there, she will not Idle. Other times, she fires right up and idles right around 700. :confused:
Thus far, Injectors have been replaced, however fuel pressure valve was not. I cleaned up the IAC, MAF, TB. Changed plugs (rapid fires), oil, air & fuel filters. TPI reading showed around .57 at idle. WOT was fine. However I didn't fully extend the IAC, so it may be off.
I suspect the EGR and/or sensor or some kind of vac. leak. Plug wires look original, but I don't think they could cause this. I only recently purchased the car, and it appears the previous owner was not as peticular as myself. So bugs need to be worked out.
Since the airbag warning's on, I have to run her into the shop anyway. But, my rearend's still sore from when they replaced the injectors. :eek:
Does anyone have any ideas of what I can check next?
Thus far, Injectors have been replaced, however fuel pressure valve was not. I cleaned up the IAC, MAF, TB. Changed plugs (rapid fires), oil, air & fuel filters. TPI reading showed around .57 at idle. WOT was fine. However I didn't fully extend the IAC, so it may be off.
I suspect the EGR and/or sensor or some kind of vac. leak. Plug wires look original, but I don't think they could cause this. I only recently purchased the car, and it appears the previous owner was not as peticular as myself. So bugs need to be worked out.
Since the airbag warning's on, I have to run her into the shop anyway. But, my rearend's still sore from when they replaced the injectors. :eek:
Does anyone have any ideas of what I can check next?
Le Mans Master
Joined: Nov 2002
Posts: 7,179
Likes: 2
From: Charlotte, NC
Re: intermittent idle problem (lakerat)
I had a similar situation with a 305 chevy w/ hei and foud the distributor to be bad. someting was wrong with the magnest for the the pick-up coil.. could be almost anything if I had an oscilliscope I would check the pick-up coil signal.. Now for some sleep for me...
-Rick :sleep:
-Rick :sleep:
