Engine Performance problem
1987 GMC Suburban V8 Four Wheel Drive Automatic 137926 miles
Initially the suburban would start missing and stalling and the problem got worse until it would not run.
I was investigating the problem and discovered that the engine idled good when the MAP sensor vacuum line input was not connected to the vaccum line from the backside of the carburator.
I have replaced the map sensor, the EGR valve and EBR solenoid and the problem remains.
what else would cause these symptoms?
have the same problem?
Monday, December 21st, 2009 AT 6:08 PM