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What are the effects of a bad fuel pressure regulator?
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Posted by Gavin (more from Gavin) on Tue, 20 Jul 2004 21:07:25 Share Post by Email
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Hello everyone...

I don't know if you've been following my posts on here about my vacuum line MAYHAM... but basically i've been driving around for 5000+ miles with no vacuume connected to my fuel pressure regulator, or my bypass valve, or my wastegate, OR my pcv. Thanks to the mechanics i trusted...

So... the thing i'm most concerned about is the car running SO RICK for SO LONG...

From what i understand, the fuel pressure regulator would operate the from vacuum, so it's LOOKING for negative pressure while, say, idling...

...however, my FPR saw 0psi on it's vacuum line while idling, so it was dumping too much fuel into the engine idle...

...so when i started BOOSTING, up to the full TEN PSI that my car could do with these lines hooked up wrong...the FPR still saw 0psi, so it was running LEAN... which i hear is very very bad...and hopefully my pistons/rings/valves aren't damaged?

Asuuming that they aren't... what are some things that will need to be serviced or replaced or checked now that this has all come out in the open?

spark plugs? anything?

Should i replace the FPR unit itself, because the diaphragm might be kaput now for some reason?

I have the abbott racing ECU chip and DI/APC chip in my car... and i was told that i shouldn't upgrade my fuel injectors or even get a RRFPR because the ECU chip is already compensating for that... however... could i get the fixed 3.0 BAR FPR unit? Suppoedly the chips from abbott are actually from MAPTUN... for my 1990 9000 turbo...

...so... yeah thank you everyone for your help... sorry i get carried away on this board sometimes... but i've been trying to figure out why my car sucked for SOO long, and i would have almost rather heard that i need a new turbo, because the junkyard one was shot... than hear the friggin lines were connected wrong the whole time... ug

-gavin

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