This is my first post, so it will double as my introduction. I just bought a 2003 grand prix for 500 dollars because the p.o. thought the transmission was going out. It shifts pretty hard between gears. However, I noticed the tach was not working and after some google searching I thought maybe the problem was the crankshaft position sensor. I drove the car to autozone and their scanner confirmed. So I drove it home fine, pulled it into the garage, and got to work on replacing the sensor. I got the pulley removed, replaced the sensor, reinstalled the pulley and belt, and disconnected the battery to reset the check engine codes.
I came back out about 30 minutes later and reconnected the battery and it wouldn't start. It cranks and turns over but it won't start. At first I thought maybe it was due to the crank being turned and putting it in a different position, but since the pulley is slotted that didn't make sense. Then I thought maybe the new sensor was faulty, but I believe it should still run, just poorly. Maybe disconnecting the battery did something to the anti-theft?? I'm not sure how the anti-theft works on this car.
My other thought is maybe both c.p. sensors are bad and I need to replace the other one on the back of the block, but why would it run before hand?
Any advice or suggestions? I'm out of ideas, and I hated having to push the car outside after I drove it in..... :/
Thanks in advance,
Jason
