HELP: Fuel Pressure Problem????
#1
Too many posts.. I need a life!!
Thread Starter
HELP: Fuel Pressure Problem????
Hi Lads,
I've got my S2 running again and ready for MOT so went for a spin friday morning and it flew
Missed that feeling for over a year!!
But!!
Later on the day, did some final things to the car and started it up again and went for a spin again. Once it was warmed up I kicked it down again but it sounded like it was running at 3 ciliynders or was overfueling too much at about 3000 rpm, and when I was real easy on the throttle I could get him to 4000 rpm, not good at all. Turned the boost back to 7-8 psi but the problem stayed and it can't be the boost pressure limiter as it always ran at 13 psi and has a Superchips chip.
So went back home and measured the fuel pressure regulator connector and it gave me 0 Volt. When I gave it a little revs it jumped to 7,95 Volt and stayed there, no mather what I did. The fuel pressure regulator was the origin of my trouble last year in the first place, but don't know anymore what can be wrong...
Is it the wiring, the regulator itselfs, the computer, or something completely different?
I hope you guys(and girls) can tell me something out of your own experience and how to test/fix it?
Maybe an explination of how the regulator regulates, by changing volts or resistance could also help.
Thnx!
I've got my S2 running again and ready for MOT so went for a spin friday morning and it flew
Missed that feeling for over a year!!
But!!
Later on the day, did some final things to the car and started it up again and went for a spin again. Once it was warmed up I kicked it down again but it sounded like it was running at 3 ciliynders or was overfueling too much at about 3000 rpm, and when I was real easy on the throttle I could get him to 4000 rpm, not good at all. Turned the boost back to 7-8 psi but the problem stayed and it can't be the boost pressure limiter as it always ran at 13 psi and has a Superchips chip.
So went back home and measured the fuel pressure regulator connector and it gave me 0 Volt. When I gave it a little revs it jumped to 7,95 Volt and stayed there, no mather what I did. The fuel pressure regulator was the origin of my trouble last year in the first place, but don't know anymore what can be wrong...
Is it the wiring, the regulator itselfs, the computer, or something completely different?
I hope you guys(and girls) can tell me something out of your own experience and how to test/fix it?
Maybe an explination of how the regulator regulates, by changing volts or resistance could also help.
Thnx!
#2
20K+ Super Poster.
for the car to misfire for being too rich it has to be REALLY REALLY rich
you'd notice plumes of black smoke out the back!
more likely it's lean, more common cause of a misfire! it dont have to be that lean to run like a bag of shit
you'd notice plumes of black smoke out the back!
more likely it's lean, more common cause of a misfire! it dont have to be that lean to run like a bag of shit
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