The 'check engine' light has been on (but it has been since I bough the car [used] a year and a half ago after my previous Silverado was totaled when I was rear-ended by an SUV - but that's another story.)... The codes I've checked since trying to diagnose this running problem indicated the EGR valve and MAP sensor - both of which I've replaced - and neither of which has solved the problem. We also checked the coolant temperature sensor - unplugging/bypassing it seemed to solve the running/idling problem - replaced this [relatively inexpensive part], but again, no fix. I've also replaced the fuel filter and ignition module (more recently it's been giving an 'ignition system' code) - neither of which have solved the problem either.
I've tried all of these:
coolant temperature sensor
none of them have solved my problem.
What can be wrong with my truck? Might I have been the victim of sabotage? (Strangely, not long after the running problem started, each of the four tires needed to be replaced inside of a ten day period - each from seemingly unrelated events - leaks, nail/screw, etc.)
Any insight would be of great value.
have the same problem?
Thursday, August 5th, 2010 AT 4:59 PM