Shakes or Wobbles problem
1988 Pontiac 6000 4 cyl Front Wheel Drive Automatic 105000 miles
I own a 1988 Pontiac 6000 base model with the 2.5L, 4 cyl. Engine. The car ran great up until the engine died while driving. I found the ECM fuse blown, replaced fuse after reading out the power wire from the fuse to the ECM, no shorts. Engine started but was runing rough(shaking). Jumped the ALDL pins A&B and code 12 (diagnostic Mode) repeating was the only code. Read out the alterator and the output was fluxuation between 16 and 22 volts. Replaced the alternator, output is now 14.4 volts steady. Engine still running rough(shaking). Verified spark at all 4 cylinders. Pulled the ECM and it had a faint burnt smell, replaced ECM (swapped PROM from old to new ECM), no change, still running rough(shaking). Jumped the ALDL pins A&B and code 12 (diagnostic Mode) repeating was the only code again. Was told by a GM Tech. That the ECM has to reprogram itself and to drive the care some. The car is practically non-drivable. When I put it in gear, the engine bogs down to the point of almost stalling and with the pedal to the floor it take 30 seconds to get up to 20 mph and 20 mph is about all I can get it to. Not sure where to go from here.
have the same problem?
Wednesday, November 4th, 2009 AT 10:41 AM