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GT500 no-start issues.

Old 10-27-2014, 05:04 PM
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Default Re: GT500 no-start issues.

Originally Posted by Lord Humongous View Post
You got a BAP?
Yes. Fuses for the BAP are good and I checked for any exposed wiring that might have been shorting anything out back there. I'll be doing voltage checks for the BAP and checking the FPDM tomorrow.

Last edited by 92_SR20; 10-27-2014 at 06:45 PM.
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Old 10-28-2014, 10:42 AM
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Default Re: GT500 no-start issues.

Car is running, not sure what did the trick but I did quite a bit this morning before attempting to start it ( I know, I know, I should have ruled shit out but I was in a groove =/ ).

1) Checked all plug gaps / plugs for damage.
2) Changed out fuel pump related fuses, they all checked out good but I did it for good measure.
3) Checked BAP voltage/wiring for anything that may be exposed.
4) Swapped out the fuel pump / IC pump relays.
5) Reloaded my tune.

I'm sure I'm forgetting some things, has been idling in my driveway for 5-10 minutes now, going to let it go a bit longer before I try and take it anywhere.
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Old 10-28-2014, 11:43 AM
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Default Re: GT500 no-start issues.

Reloading the tune may have wiped out any short and long term trims that might have caused the problem. Might just be running too rich with the learned trims and the extra cold idle enrichment with the cooler weather. Does it have hot-start problems also?
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Old 10-28-2014, 12:56 PM
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Default Re: GT500 no-start issues.

Originally Posted by Fabrik8 View Post
Reloading the tune may have wiped out any short and long term trims that might have caused the problem. Might just be running too rich with the learned trims and the extra cold idle enrichment with the cooler weather. Does it have hot-start problems also?
Negative on the hot start issues.
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Old 11-09-2014, 05:49 AM
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Default Re: GT500 no-start issues.

Will it start from a roll ? Hows the timing ?
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Old 11-11-2014, 08:01 AM
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Default Re: GT500 no-start issues.

Originally Posted by Fabrik8 View Post
Reloading the tune may have wiped out any short and long term trims that might have caused the problem. Might just be running too rich with the learned trims and the extra cold idle enrichment with the cooler weather. Does it have hot-start problems also?
My thought also.
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Old 12-03-2014, 03:55 PM
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Default Re: GT500 no-start issues.

If it happens again, do the following:

1.) Turn ignition into run position, BUT DON'T CRANK. Expose the shrader valve on the fuel rail and press it to see if there's fuel pressure in the rail. Clean up any fuel that may have spilled out. If there is spark, proceed to 2 otherwise you're having a failure in your pumps.

2.) Take an extra spark plug and install it on one of the coils; Put against the engine or something grounded, get someone to crank, and see if its sparking. If its not firing at all, its something with your ignition that's preventing EVERYTHING from firing. Notably, probably your crank or cam position sensor.
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Old 12-03-2014, 04:49 PM
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Default Re: GT500 no-start issues.

Originally Posted by RandomTask View Post
If it happens again, do the following:

1.) Turn ignition into run position, BUT DON'T CRANK. Expose the shrader valve on the fuel rail and press it to see if there's fuel pressure in the rail. Clean up any fuel that may have spilled out. If there is spark, proceed to 2 otherwise you're having a failure in your pumps.

2.) Take an extra spark plug and install it on one of the coils; Put against the engine or something grounded, get someone to crank, and see if its sparking. If its not firing at all, its something with your ignition that's preventing EVERYTHING from firing. Notably, probably your crank or cam position sensor.
There are no schrader valves on a GT500, stupid - I know. I didn't test spark because I didn't have an extra set of hands handy the times I was playing with it, it has been running good since though.
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Old 01-20-2015, 07:46 PM
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Default

Sounds like and anti theft or immobilizer issue toe shouldn't be a mechanical issue with that low mileage of drive time unless it's something dumb like a soft set connector or something
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