1994 Chevrolet Blazer Repair Question
Asked on February 26, 2007
My 94 S10 blazer idles real high?
I have only had it a year, it has always idled alittle higher than normal. Now it idles so high I am scared to drive it. It doesn't kick down at all. I have had the EGR valve cleaned and replaced, an IAC replaced also. Any advise would be greatly appreciated.
Asked by molly jeanAnswer
Replied on February 27, 2007
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.