Engine Performance problem
1990 Chevy Silverado V8 Two Wheel Drive Automatic 240000 miles
My 1990 Chevy pickup has a reman engine in it and has been running fine, but it has lattly started missfireing when cold. Shudders really bad untill wamed up. Once it reaches operating temperature it seams to run fine. But not untill. It also surges a little at 35 to 45 mile per hour after warm. I have changed distributer, idle air controll and throttle position sensor. No check engine lights. Could this be O2 sensor?
have the same problem?
Thursday, November 6th, 2008 AT 7:55 AM