Engine Performance problem
1995 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic 120000 miles
I was driving my 1995 Grand Prix GTP (3.4L V-6)when it just shut off. It would spin over but would not start. It doesn't get a spark, the injectors are pulsing or at least I can smell gas if I spin it over with a spark plug or two removed. I followed a diagnostic flow chart from the dealer concerning a no-start in this car, with this engine. It fingered the Ignition Control module as the problem. Replaced the module and all 3 coils; still no spark. Since then I've replaced both crankshaft sensors and even tried a different PCM. Still the engine will not start. According to a scan tool (OTC) it shows no rpm reading when I'm spinning the engine over. Checked the wires (twisted) from the crank sensor in the side of the block, the readings on them pulsate from.3v to 2v (AC). The module gets 12v when the switch is on. I disconnected the tach wire from the plug-in at the module (read that a grounded tach could be the problem). Still no spark. What should I check next?
have the same problem?
Monday, October 6th, 2008 AT 3:21 PM