All of the sudden the car won't idle?
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Joined: Dec 1999
Posts: 2,248
From: Houston, TX
All of the sudden the car won't idle?
Above 1500 rpms, the car revs up w/o hesitation. Below 1500, the car chokes down to 4-500rpms until it catches and goes back up to 1500, or it just dies- this cycle repeats until the car dies.
Plugs are new, wires should be good (have 10k on them, never missed a beat), fuel pressure is good, opti is 3 weeks old, coil is new, ignition module is new.
Anyone have an idea? What am I missing?
EDIT: No DTC codes, but I threw both a high res and low res code last week at the same time
. Likely the opti, but need someone to remind me how possible it is for the opti to die.
Ryan
Plugs are new, wires should be good (have 10k on them, never missed a beat), fuel pressure is good, opti is 3 weeks old, coil is new, ignition module is new.
Anyone have an idea? What am I missing?
EDIT: No DTC codes, but I threw both a high res and low res code last week at the same time
. Likely the opti, but need someone to remind me how possible it is for the opti to die.Ryan
Last edited by 96speed; Jun 21, 2003 at 05:32 PM.
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Joined: Aug 2000
Posts: 1,071
From: Dallas,TX
Does it still have the same power throughout the rpm range? Sounds like you have a sensor going south on you and the iac is trying to compensate for it..Make sure your MAF is not letting air in or have a leak anywhere letting unmetered air into the TB..
Cody
Cody
Thread Starter
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Joined: Dec 1999
Posts: 2,248
From: Houston, TX
Well, did a little testing. Unplugged the MAF and it runs fine.
But, while the MAF is plugged in it reads fine on the Scanmaster, just won't idle.
It looks like the MAF is really dirty, so I am going to try cleaning it and seeing it that helps.
I just want to thank Chris Boui for all his help and patience on my car. Thanks, Man!!!
But, while the MAF is plugged in it reads fine on the Scanmaster, just won't idle.
It looks like the MAF is really dirty, so I am going to try cleaning it and seeing it that helps.
I just want to thank Chris Boui for all his help and patience on my car. Thanks, Man!!!
Registered User
Joined: Mar 2003
Posts: 297
From: Columbus, Ohio
Definately check the IAC. It's amazing how that little thing will effect you air intake. If the spintle is sticking then it could be closed when it needs to be opening. That's the easiest check I think.
Then definately check for TB leaks.
IAC is about $100 from GM and about 15 minutes work
later
Then definately check for TB leaks.
IAC is about $100 from GM and about 15 minutes work
later
Thread Starter
Registered User
Joined: Dec 1999
Posts: 2,248
From: Houston, TX
Update - cleaning the MAF had no real impact. However, unplugging the MAF makes the car run fine. I will be using a different MAF this week to make sure that is the cause of my grief.
Ryan
Ryan
Last edited by 96speed; Jun 22, 2003 at 10:37 PM.
Registered User
Joined: May 2003
Posts: 104
From: Houston, TX
Originally posted by 96-speed
I just want to thank Chris Boui for all his help and patience on my car. Thanks, Man!!!
I just want to thank Chris Boui for all his help and patience on my car. Thanks, Man!!!
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