Will not run if your foot is not on the gas. - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 4 (permalink) Old Mar 10th, 03, 03:25 PM Thread Starter
Join Date: Feb 2003
Location: Urbana, ohio
Posts: 1

I have a 90 camaro, it will not say running unless you put your foot on the gas. It acts like it is flooding it's self out.Now I have had all the sensors replaced.I can not think of anything else to do. I would like to figure out the problem without putting it on a machine.
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post #2 of 4 (permalink) Old Mar 10th, 03, 03:50 PM
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Join Date: Mar 2002
Location: Austin, TX, USA
Posts: 5,277

Could be the idle air control servo. Its a large pintle controlled by a stepper motor. It bypasses idle air around the throttle plates via a passage about 3/8" in diameter. It's purpose is to set idle speed and compensate for things like AC, transmission, and power steering loads. Normally, if you kick on your AC you should see the tachometer bobble a little as the IAC motor brings the idle up a couple hundred RPMs. You also should see the idle speed increased on cold starts and slowly decline as the engine warms up.


68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #3 of 4 (permalink) Old Mar 10th, 03, 10:41 PM
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Join Date: Nov 2002
Location: Aiea, Hawaii
Posts: 571

A friend had a very expensive engine swap up to a tricked out 350 on his 1990 where the computer was bypassed. He ended up recieving the car back with a high idle then after warm up the car would stall out if he wasn't on the gas. It simply apperaed to be some problem with the AC pumps clutch kicking in when he didn't even have the AC on. I disconnected the pumps clutch wires and it ran fine. Not sure what the big computer problem is but maybe pop the hood and watch for the stall to go down after starting paying attention to that the AC pump if you have one.
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post #4 of 4 (permalink) Old Mar 12th, 03, 02:02 PM
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Join Date: Jun 2000
Location: LaGrange,Il
Posts: 1,026

It could be as simple as a vacuum leak. It usually is the dumb things. Check all the connections and hoses.

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