1994 Buick Lesabre 6 cyl Two Wheel Drive Automatic 90000 miles
My 1994 Buick Lesabre shows a check engine light after warming up. The engine misses on all cylynders according to the scanner. It shows an EGR valve pintle position error. In a "data "mode, while driving the scanner shows the EGR works fine, except when I accelerate and the EGR% needed figure gets to 80% +. Then the EGR shuts down to 0% (as expected under that acceleration), but as the car gets up to speed the EGR never kicks back in. It stays at 0% EGR, no mattter what the required % is on the scanner and all cylinders miss intermitently. Unless I back off on the throttle completely for just a second, then the EGER function kicks in again and resumes properly and engine smooths out. Should I change the EGR. I have tried clening it already in case it is sticking.
have the same problem?
Saturday, April 5th, 2008 AT 8:14 AM