Engine Mechanical problem
2001 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic 187000 miles
I have an intermittent stalling occurring while driving highway speeds. I pull off the highway and attempt to restart. It will turn over and tries to start but will not run. What is interesting is that I can get it to start by disconnecting the battery which apparently is clearing the ECM of whatever the problem. It will then run fine until the next stall. The car throws no codes when using a scan tool and there is no check engine light. I have checked the fuel pressure at the rails which is 43 psi at the time of the no start. It also measures 43 psi when the car is running fine. I have replaced the following: MAF Sensor, Crank Position Sensor, Ignition Control Module and Fuel Pump Relay. I am getting ready to replace the MAP Sensor. I am not sure if I don't have spark at the time of the no start as it is hard to test this by yourself on the highway. The car is a 2001 Pontiac Grand Prix GT. V6 3.8 L engine. 187000 miles. Any help would be appreciated.
have the same problem?
Sunday, September 26th, 2010 AT 9:34 PM