Question about 1998 Pontiac Grand Prix

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My 1999 Pontiac Grand Prix GTP is not starting, the fuel pomp is working and you can hear it go on when you insert the key, my key does no have the chip in it, so im guessing is the anti theft, i replaced the crank sensor and the spark plug module and i also took the computer of the car to get tested and they said it was working properly so my only other option is the anti theft, i wil like to know where de module is located and how to disable it. THANKS!

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If you replaced the crank sensor and it will not start then your car needs a CASE learn. Once the crank sensor is removed and a new one is installed, without a lot of luck it is highly likely that the sensor will be out of range to properly detect your crank position and send the info to the PCM so proper ignition timing can be calculated and executed from any given piston position left at vehicle shutoff. A CASE learn is a procedure that will calibrate the new sensor to correlate with crank position. Without it, your car will not run. It can be done with most TechII compliant scan tools with the capability. You may be able to rent or buy a used one to get you up and running again, it's a simple procedure it should take only about ten minutes.

Posted on Apr 23, 2011


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