Fuel Pump Issue

[19GT94]

Hello All,

I'm finding something fishy with my 94 GT. I recently purchased the car and drove it home without any issues. After shutting it down though, she didn't want to start back up. With a voltmeter I checked to see if I had accessory voltage coming out of pin 5 at the CCRM and I did, but still no fuel pump function. I checked the underhood fuses and all checked out, but still no fuel pump prime or function.

I later replaced the pump thinking that was the issue, but still it does the same thing. Anybody experienced this problem, and if so, what remedies did you try? I'm leaning towards an elevated ground somewhere, but I can't seem to find a description of the location on the vehicle. Any help would be extremely appreciated.

 

[g36 monkey]

Have you checked the inertia switch in the trunk?

 

[19GT94]

Hi Monkey,

Yeah I checked the switch, button is in the correct position and the pigtail seems to be in good shape. She just seems to have a mind of her own when she feels like starting.

 

[g36 monkey]

that's very odd to me?

 

[Musturd]

Distributor may have taken a dump it signals the fuel injection on these turds

 

[RichV]

So does it not run from the day you brought it home? Or just not start sometime?

 

[Shifty Powers]

Ima go with the problem being the fuel pump.......



or any other problem these guys come up with.. But its something!!! Thats for sure!:thumbsup:

 

[19GT94]

Lol. Thanks for the direction. She started the day I brought her home and will only start only now and then. I replaced the fuel pump already and have since had her start several times without issue. But every now and again it won't prime or start up at all. Still going through it. And now the darn key wont come out of the ignition. New cylinder and everything. She is fighting early.

 

[chrisv_10]

Have you checked the voltage at the end of the fuel pump power wire?? And the ground also.

 

[19GT94]

Hey Chrisv. Unfortunately, I'm the only pair of hands I have right now. I tracked down most of the body grounds and cleaned them and applied dielectric grease to most of them. She has been starting up pretty reliably now, but I'm anticipating it happening again soon. Still struggling with the key now, lol!

 

[chrisv_10]

cool. glad it's fixed. hopefully it stays that way.

 

[AaRoN]

Sounds to me like the ignition was the problem all along.

 

[chrisv_10]

Sounds to me like the ignition was the problem all along.

Oh i didn't read that part. Yeah, most likely.

 

[19GT94]

It's been a while, but the root of the problem has been found! The dang CCRM was the culprit after having a successful two weeks of starting, it happened again. Replaced the CCRM, and haven't had a single problem since. Thanks to all those who responded!

 

[MustangChris]

FYI: The CCRM needs solid grounds. if you have more problems, check out the wiring harness's grounds in the engine bay. I know you hit most of them, but specifically check out the ones linked to the CCRM.

 

[945.0]

^^that could be part of my issue too.

glad you found the fix