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FIXITMAN
FIXITMAN, Mater Technician
Category: Pontiac
Satisfied Customers: 17142
Experience:  ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH
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I have a 1997 Pontiac Grand Prix GTP and after changing my

Customer Question

I have a 1997 Pontiac Grand Prix GTP and after changing my mass air flow sensor ,throttle position sensor ,idle air control sensor ,and ignition coils my car wont start.
Can somebody tell me what's going on
Submitted: 9 months ago.
Category: Pontiac
Expert:  FIXITMAN replied 9 months ago.

Hello, my name is***** you for the question. Can you tell me why these parts were replaced?

Customer: replied 9 months ago.
Just brought the car
Maf sensor prongs was broke
I changed the coil packswire I did spark plugs and wire
The egr valve, tps, and IAC sensor because it was free
Expert:  FIXITMAN replied 9 months ago.

Was the car running prior to that?

Customer: replied 9 months ago.
for about a day after I change the parts
Customer: replied 9 months ago.
I have spark from the ignition coils wasn't able to do the fuel pressure test but got a trouble code P1200 injector control circuit
Expert:  FIXITMAN replied 9 months ago.

Thanks. Do you hear a buzzing from the fuel pump when you turn the key on?

Customer: replied 9 months ago.
Expert:  FIXITMAN replied 9 months ago.

Is the security light on or flashing when you are cranking the engine over?

Customer: replied 9 months ago.
Its on
Expert:  FIXITMAN replied 9 months ago.

Then that may be the problem. If the security light is on while cranking the engine then it can shut down the fuel system. What throws me off is the code you have. That tells me that there is a voltage issue to the injectors.

Customer: replied 9 months ago.
Just went outside try to crank it again now the security light is blinking when cranking
Expert:  FIXITMAN replied 9 months ago.

Turn the ignition key on to the run position and leave it there for about 30 minutes and see if the light turns off. If it does try starting it.

Customer: replied 9 months ago.
OK I'll try it
Expert:  FIXITMAN replied 9 months ago.

Let me know what happens.

Customer: replied 9 months ago.
I tried it
Started it stayed on for 30sec puttered then shut
Expert:  FIXITMAN replied 9 months ago.

Is the security light staying on or flashing again?

Customer: replied 9 months ago.
Flashing
Expert:  FIXITMAN replied 9 months ago.

I need to make sure the kind of security system you have. Does your key have a small black pellet in it?

Customer: replied 9 months ago.
No it don't
But my cousin came and told me to checkmy fuel pressure resistor and when we checked it was cracked could that be the reason why the car is not starting
Expert:  FIXITMAN replied 9 months ago.

That can cause it to not run, but that does not explain the security light.

Customer: replied 9 months ago.
Now that i have the original key I don't get the security light but still no start
Expert:  FIXITMAN replied 9 months ago.

Then you may have just isolated it down to the resistor. If it is cracked it needs to be replaced.

Customer: replied 9 months ago.
Car still didn't start after changing the part but I don't see the security light

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