Car won't start! Is it my fuel pump?

[RusWolf]

So!
Went out and after the bar go to my car and it won't start.
Crank and wants to start and kind of starts however something prevents it from starting 100%.

Car is E85, Paxton, BAP.

Any help diagnosing would be appreciated. Will make a video later on.

 

[Black02GT]

First thing I'd check is the BAP fuse, make sure your getting fuel pressure, go from there.

 

[RusWolf]

Thanks!
Also just tried again, and it just cranks and cranks non stop.. I'm 99.99999% sure its dry as as gets and no fuel goes anywhere....

 

[hitmix300]

Do you hear the pump prime when you cycle your key from off to run?

 

[RusWolf]

Do you hear the pump prime when you cycle your key from off to run?

Good question!
Nope, i hear nothing.

 

[92fiveohfox]

Sounds like the pump. Have you wot on lower than 1/3 a tank lately?

 

[RusWolf]

Sounds like the pump. Have you wot on lower than 1/3 a tank lately?

Nope...
In fact i filled up with fresh E and put ethanol stabilizer and drove fine to the city.

 

[jp1seattle]

Check that fuel pump relay.....I've heard of that going out on a few people around here.

http://parts.autonationfordwhitebearlake.com/oe-ford/AU5Z9D370P

 

[RusWolf]

Check that fuel pump relay.....I've heard of that going out on a few people around here.

http://parts.autonationfordwhitebearlake.com/oe-ford/AU5Z9D370P

Where is this located on the car and how would i test it?

 

[hitmix300]

It's in the fuse box and I think you can swap it with a/c relay it another with the same amperage rating. There should be a crash button to that kills the fuel pump. I would look into that and any fuel related fuses

 

[Journeyman27185]

Maybe you should diagnose your problem? Just a thought.

Have you checked for fuel? Have you checked for spark? Have you checked anything?????

 

[RusWolf]

Maybe you should diagnose your problem? Just a thought.

Have you checked for fuel? Have you checked for spark? Have you checked anything?????

And i should have done all of that while waiting for a tow truck in the middle of manhattan with no tools ?
i'm not going to start taking the car apart at 5 am.

 

[jp1seattle]

Here's the thread I was thinking about.....

http://www.svtperformance.com/forum...JMS-BAP)&highlight=Fuel+pump+relay+controller

 

[RusWolf]

Here's the thread I was thinking about.....

http://www.svtperformance.com/forum...JMS-BAP)&highlight=Fuel+pump+relay+controller

awesome!

thanks man.. Seems like people in that thread had the same thing.
my car has been running BAP/ID1000's since last october.

 

[gimmie11s]

Is your BAP always activated or does it run off a Hobbs switch?

 

[RusWolf]

Is your BAP always activated or does it run off a Hobbs switch?

I have a VMP PnP BAP so it's always on.

 

[evil281]

Hmmm i think it's always activated. To be honest i'm not sure as my BAP was installed by Rev Auto when i was getting retuned by them last year, they only chargerd me something around 40 bucks to install it so i gave them a green light.
I don't use or have any hobb switches so i assume it's always on. It's a VMP BAP.

Its always on. It's tied into the fuel module harness in the trunk by a Y harness adapter. It does have a fuse at the module you might check. There is also another fuse in the fuse box position 14 (or something like that) that was required to be replace as its only a 15 from the factory and the VMP BAP comes with a 40. I would start by looking at these fuses.

 

[RusWolf]

Got ya!
Thanks guys i will check the fuses this weekend and will report back!

Thinking about just ordering the fuel system from Sai.

 

[RusWolf]

Update:
Checked fuses today, fuse 13 under the hood is good (30 AMP) and also checked the fuse in the. VMP BAP harness, also good.

The fuel pump relay you guys talking about is exactly the same as relay above it, swapped those to see and nothing changed.

 

[gimmie11s]

Might have burned out the fuel pump.

Running them hot (without a psi switch to activate) can lead to this.

The alternative is running a switch that activates the BAP at 3-4psi allowing your pump to run like normal under all conditions except for WOT. Problem is a bad Hobbs switch can lead to a blown motor.