WhippledStang

Hey, I have read posts for a long time and now that I have a problem I figured I would create an account.

I have the H/O Whipple supercharger kit w/ the 10 psi pulley. I have everything that came with the kit as well: 38 lbs. injectors, 0 degree spark plugs, intercooler, and GT500 fuel pump.

Today I was driving in the mountains and the engine started shuddering and lost all power. Soon after that it died all together and wouldn't start. I ended up waiting for about an hour with the engine off since I couldn't call a tow due to not having a cell signal in the mountains.

After the hour wait it fired up like nothing ever happened. I took it easy all the way home and I haven't read the code yet.

Any ideas?

onederful100

no idea, but the code would really help.
good to hear you made it home.

WhippledStang

Thanks. Its just frustrating as ****. Will post the code tomorrow.

WhippledStang

Well, I had 4 problem codes. P0191 - Pump defective, P0300 - Random Miss, P0301 - Miss in cylinder 1, and P0303 - Miss in cylinder 3.

Fun, fun, fun. It seems to me that my GT500 fuel pump has croaked. Its bull**** because it has been less than a year and I haven't even abused it. Im going to have to make some phone calls and yell at some people.

hammeron

hey whippledstang, i'm glad you got home
also......if this happened to me, i would
first suspect a wiring issue before suspecting
a pump failure. we all have our own way of
troubleshooting, so i hope all goes well with
yours.

NemesisStang08

umm, im not super good at mechanical stuff...but im pretty sure a stang is not made for the mountains....its no Subaru, lol. With that said, could it b that the stang is trying to over-work that pump and maybe caused it to fail due to unevenness of the car. And just throwing random ideas out there, maybe also in combination with the pump the air density of being in the mountains could cause a misfire becuase the fuel-to-air mixture was inadequate? (yeah i know...kinda dorky but i learned the mixture thing when i became a pilot) Again, i know im no mechanic, but just some crazy thoughts that might pop up some other ideas

aclass

+1, Either wiring, loose fuse, or something got too hot would be my first wave of the troubleshooting.

moosestang

You're a smart man.

Who installed the kit? Where did you read that P0191 was a code for defective pump? The first few google searches show fuel pressure sensor code.

I'd start by checking all the grounds for the fuel pump system, then i'd test the fuel pump drivers. I doubt the pumps are bad.

How many miles on the car? Has the fuel filter ever been changed?

How much gas was in the tank and were you on a steep incline? You could have caused the pumps to suck air, which would cause your problems and explain why it fired back up.

moosestang

Oh, there are many other things it could be, but the pumps would be last on my list.

2007VistaBlueGT

P0191 - Fuel Rail Pressure Sensor Circuit Performance (FRP) The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time. High fuel pressure.
Low fuel pressure.
Damaged FRP sensor.
Excessive resistance in circuit.
Low or no fuel.
A FRP PID value during KOER of 138 kpa (20 psi) and 413 kpa (60 psi) for gasoline or 586 kpa (85 psi) and 725 kpa (105 psi) for natural gas vehicles (NG) is acceptable