IAC ISSUES

1988 Chevrolet Suburban

Tiny

wackosiren

June, 9, 2012 AT 10:52 PM

1988 Chevrolet Truck V20 3/4 ton Sub 4WD 5.7L TBI 8cyl

Replaced the IAC. When it was started. It raced like a bandit. Turned it off and disconnected the battery for 30 minutes. Now it will not start at all. Acts like it is not getting any gas. Any help would be appreciated.

3 Answers

Tiny

ASEMaster6371

June, 9, 2012 AT 11:13 PM

When you replace the iac, the valve is fully retracted and will settle down in a period of time. Removing the battery cable was not a good idea. You wiped out the memory of the computer and it has to re learn all over again compounding the situation. Give it about 1/2 throttle to start it and see if it idels. You may have to drive it for it to re learn.

Roy

Tiny

wackosiren

June, 9, 2012 AT 11:32 PM

Cant drive it cant keep it running. Plz if it was me I would have takin it to the shop. I dont mess with electrical. But the man has a friend who said do this. So this is where I am at not I have to try to fix it. I have been workin on vehicles since I was a kid, my dad taught me, isnt much I cannot do, but I do know what I dont touch.

I found an article that said I can re train it by jumping the block under the dash. Is this possible? We used to get the codes out of the old vehicles by jumping with a wire.

Tiny

ASEMaster6371

June, 9, 2012 AT 11:42 PM

Thats just code pull, nothing to do with re learn system.

Try the battery thing again and see if it fires up

Roy

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