Pontiac Problems? Ask a Mechanic for Answers ASAP
Hi Im David, thanks for visiting the site. pull the fuel pump relay, check for B+ on 30 then turn the key on and check for switch ign voltage on 86. let me know if you have both. the voltage on 86 should happen immediately as you turn the key to the run(not start) position.
do you still need assistance?
its not a security issue. once the immobilizer engages, it doesnt just reengage ....have you had the recall done with the ignition switch replacement?
ok, if you have a meter i can pull some prints of crtical circuits and we can check for shorts to ground or open wires. or while the engine is running you can start moving wire harnesses and connectors around to see if you can get it to stall or hiccup. let me know //
normally a faulty or weak crank sensor will not shut the car down while driving, but will not allow it to start after its been running fora while. like going to the store, coming back out while the engine is still warm and it wont start. letting it cool down then it starts. thats classic crank sensor failure.
then i would star looking for wiring harnesses chaffing against the engine or loose ground wires.
checking in to see how its going?