Mods. 1996 awd tsi, 6bolt, 16g, stock FPR, new fuel filter, B&M FP guage, 190lph, 550cc, S-afcII. all one year old.
Alright 1 month ago. I cooked the alternator. I melted the regulator and the car charged 17volts for a mile or so. I had the alternator redone. Next day i was driving coming to a stop a light. Car shut off. Wierd. Doesn't start back up till i give it gas. It won't idle but will drive fine, doesn't boost well either. I have to keep my foot on the gas to keep it going.
I pop the hood i hear what sounds to be a vacuum leak but the car is OFF and key is in the ON position. I put my hand on the FPR return and pulsating fuel is squirting through it. I look at my B&M gauge on the filter top and its reading 50psi. So i figured it was the FPR. Let the car cool took my friends FPR on the car started up fine. Ran good again.
Fast foward to this week. Its doing it again. But i notice this time with key ON and engine OFF the passenger fan is ON with engine cold and fuel pump comes ON and stays ON never shuts OFF. This FPR is good.
I checked the fuel return line coming back its fine. Sometimes the pump won't come on for a few sec. than i hear the click from the relay and it starts. Other times it turns on right away. No codes. I hit a pretty big bump in the road that jarred the car pretty good on the same day as the first problem came about to begin with also. No dents in the tank shield or anything.
What are the exact purposes for the MPI relay and the fuel pump relay?? I think it may be one of those.
Pleaseeeeeeee give me some ideas. anything....
Alright 1 month ago. I cooked the alternator. I melted the regulator and the car charged 17volts for a mile or so. I had the alternator redone. Next day i was driving coming to a stop a light. Car shut off. Wierd. Doesn't start back up till i give it gas. It won't idle but will drive fine, doesn't boost well either. I have to keep my foot on the gas to keep it going.
I pop the hood i hear what sounds to be a vacuum leak but the car is OFF and key is in the ON position. I put my hand on the FPR return and pulsating fuel is squirting through it. I look at my B&M gauge on the filter top and its reading 50psi. So i figured it was the FPR. Let the car cool took my friends FPR on the car started up fine. Ran good again.
Fast foward to this week. Its doing it again. But i notice this time with key ON and engine OFF the passenger fan is ON with engine cold and fuel pump comes ON and stays ON never shuts OFF. This FPR is good.
I checked the fuel return line coming back its fine. Sometimes the pump won't come on for a few sec. than i hear the click from the relay and it starts. Other times it turns on right away. No codes. I hit a pretty big bump in the road that jarred the car pretty good on the same day as the first problem came about to begin with also. No dents in the tank shield or anything.
What are the exact purposes for the MPI relay and the fuel pump relay?? I think it may be one of those.
Pleaseeeeeeee give me some ideas. anything....
