1994 Chevrolet Blazer Repair Question
My 94 S10 blazer idles real high?
Check for troublecodes, anything? On a speed density system, a vacuum leak can cause the idle to go high. When I replace an IAC valve, I take the throttlebody off and give all the passages a good cleaning. Make sure the throttle valve is closing. On a cold engine, the CTS might be an issue, I'm not saying replace it.
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