What are your thoughts?

Asked by RizzoV90 Oct 03, 2020 at 07:14 PM about the 1989 Chevrolet S-10 Blazer Tahoe 4WD

Question type: Maintenance & Repair

Truck is running real rough. I can push the gas
petal to the floor and it runs all the way up and
sounds good. As soon as I put it in drive it
dies. Almost like it’s bogged down. Put it back
in park and it revs fine. I’ve changed plugs
and wires. I’m thinking vacuum leak but
cannot find a leak.

1 Answer

Turns out it was a bad map sensor, and the air control valve was stuck open. Throttle position sensor is still throwing a code cause a similar problem. Could be a short but I’m about 90% sure it’s the computer. When I get the computer I will update answer.

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