Bad FPCM

[RGRCamaro]

Good Morning Everyone,

I think I might have a bad FPCM, and I was hoping that someone could tell me how to test it? People have mentioned running a straight hot wire to the pump bypassing the FPCM to see if the car would start. What is the best way to do that if thats a good way to test it?

I will probably end up ordering a ADM FPCM anyways since the original shop which installed these mods used the stock one.

Mod List:
Magnacharger 2300
Custom Cam Kit
89lb injectors
Twin Intake pump
Cogs rear pulley
10lbs of boost.

[JANNETTYRACING]

Originally Posted by RGRCamaro

Good Morning Everyone,

I think I might have a bad FPCM, and I was hoping that someone could tell me how to test it? People have mentioned running a straight hot wire to the pump bypassing the FPCM to see if the car would start. What is the best way to do that if thats a good way to test it?

I will probably end up ordering a ADM FPCM anyways since the original shop which installed these mods used the stock one.

Mod List:
Magnacharger 2300
Custom Cam Kit
89lb injectors
Twin Intake pump
Cogs rear pulley
10lbs of boost.

Please don't do that, the fuel pump is pulse width modulated not a standard 12 v pump.

If something is wrong you should have a code, and you should double check all the fuses.

You can also probe the harness for power and ground feeding the FPCM.

Ted.

[RGRCamaro]

Originally Posted by JANNETTYRACING

Please don't do that, the fuel pump is pulse width modulated not a standard 12 v pump.

If something is wrong you should have a code, and you should double check all the fuses.

You can also probe the harness for power and ground feeding the FPCM.

Ted.

Thank you for the reply Ted! I wish there was a shop like yours in Tulsa. You have a great reputation!

I am throwing no codes (At least no CEL), and yeah the straight line did not seem like a good idea, I wanted to check with you guys here on the forum first. I have checked the fuses and they all checked out. I rented a voltage meter and tried my best to test the power and ground going into the pump and into the FPCM. no power reading to the pump, and got a power reading to the FPCM. This is what makes me believe it is the FPCM. If I tested them correctly.

[JANNETTYRACING]

Originally Posted by RGRCamaro

Thank you for the reply Ted! I wish there was a shop like yours in Tulsa. You have a great reputation!

I am throwing no codes (At least no CEL), and yeah the straight line did not seem like a good idea, I wanted to check with you guys here on the forum first. I have checked the fuses and they all checked out. I rented a voltage meter and tried my best to test the power and ground going into the pump and into the FPCM. no power reading to the pump, and got a power reading to the FPCM. This is what makes me believe it is the FPCM. If I tested them correctly.

You can read power going in to the FPCM.

The computer commands the FPCM to operate the pump via a Hz signal.

You may not be able to measure that with a standard volt meter or test light.

Ted.

[RGRCamaro]

Originally Posted by JANNETTYRACING

You can read power going in to the FPCM.

The computer commands the FPCM to operate the pump via a Hz signal.

You may not be able to measure that with a standard volt meter or test light.

Ted.

Ahh I see, what would you recommend I do? Do you run the stock FPCM on your builds of this power level?

[JANNETTYRACING]

Originally Posted by RGRCamaro

Ahh I see, what would you recommend I do? Do you run the stock FPCM on your builds of this power level?

We run the ADM module with ZL-1 pump.

Ted.

[RGRCamaro]

Originally Posted by JANNETTYRACING

We run the ADM module with ZL-1 pump.

Ted.

Thanks Ted, I might be switching over then.