1998 Cadillac STS V8 Front Wheel Drive Automatic 44302 miles
1st of all many thanks to rasmataz & gstacey, Your information was spot on. However it only corrected half of the problem but it was by far the best information I got by any measure. I say half because the car is running fine in all respects except the check engine light comes on but none of the other symptoms before. Now there is no rough idle, no stalling, no loss of power on acceleration.
Now, the check engine light goes on, the car runs fine and after 2 or 3 starts it goes out leaving ths same 3 codes of 101, 171, 174.
Also I left out two other things the mechanics had done because they never charged me. They replaced the EGR valve and thoroughly cleaned the outer idle control motor.
I am hoping this additional information will further isolate the problem. There are no vacuum leaks. I am also making another donation because I truly believe that your continued help will eventually lead to a solution.
have the same problem?
Thursday, September 16th, 2010 AT 1:07 PM