2000 Other Chevrolet Models Quiting at idle

AKNUCKLES

MEMBER
2000 CHEVROLET
4 CYL
2WD
AUTOMATIC
140,000 MILES

This Chevy Tracker runs great until you stop and let it ilde like at a red light or stop sign. It will quit and not restart for about 5 minutes. It may idle for 30 minutes but when it stops it will not start.

There are no computer codes. Fuel pressure and voltages are all normal. We have changed the fuel pump and filters. We have checked spark during the down time and it is normal. This is driving my mechanic nuts. Can you help us.

I have heard of other trackers doing this but I have not been able to find a verified fix.

Alan Knuckles

5 Replies

2CARPRO JACK

MECHANIC
11,533 POSTS

Try cleaning the Idle Air Control Motor. Also clean out around the butterfly in the throttle bore with carb cleaner and a rag. This should help stabilize the idle. Might be an Idle speed motor that it sticking, they dont always set a code

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Monday, October 6th, 2008 AT 8:03 AM

AKNUCKLES

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3 POSTS

During some testing yesterday we found that when the engine shuts down the timing goes crazy. It retards irratically. There still is not a computer code.

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Tuesday, October 7th, 2008 AT 7:19 AM

2CARPRO JACK

MECHANIC
11,533 POSTS

That could be many things. Cam sensor, crank sensor, ecm. Anything in failure records/ freeze frame? So it is losing injector pulse?

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Tuesday, October 7th, 2008 AT 7:38 AM

AKNUCKLES

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3 POSTS

We still have not found the problem. My mechanic is trying to find the crank sensor. Could it be located inside the bell housing? There seems to be no obvious sensor visible in the normal places.

Still looking!
Alan Knuckles

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Wednesday, October 29th, 2008 AT 8:11 PM

2CARPRO JACK