Poor running 3B
Henry A Harper III
hah at alumni.rice.edu
Thu Nov 11 21:13:36 PST 2010
I have read about the fuel pressure regulator failing and dumping extra fuel
into the engine instead of returning it to the tank...sounds like it is
running really rich.
> -----Original Message-----
> From: 200q20v-bounces at audifans.com
> [mailto:200q20v-bounces at audifans.com]On Behalf Of HJS
> Sent: Thursday, November 11, 2010 7:48 PM
> To: PeterBergin at aol.com
> Cc: 200q20v at audifans.com
> Subject: Re: Poor running 3B
>
>
> Thanks for the tips guys. I did look for any boost leaks and
> didnt find any, but
> I gave it a 90% look, not a 100% look. I can look deeper into it
> this weekend by
> physically taking off some of the hoses. The plugs and wires are
> new, I forgot
> to mention that, sorry. as are the cap and rotor (correct 3B rotor).
>
> Any good ways to test the MAF and the sending units mentioned?
>
>
>
>
>
>
> ________________________________
> From: "PeterBergin at aol.com" <PeterBergin at aol.com>
> To: group44_us at yahoo.com; 200q20v at audifans.com
> Sent: Thu, November 11, 2010 7:03:17 PM
> Subject: Re: Poor running 3B
>
> Did you check vacuum leaks, turbo hoses and bpv?
> Pete
>
> In a message dated 11/11/2010 5:30:14 P.M. Central Standard Time,
> group44_us at yahoo.com writes:
> HI Everyone. I have a 3B in my UrQ and it ran great for quite a while.
> Recently
>
> >its not running well at all. Car starts right up and idles, but
> VERY rich and
> >a
> >
> >good amount of exhaust smoke at idle (from being so rich).
> Driving along its
>
> >just OK but as soon as I hit boost, its like turning off the
> key. It pops and
> >
> >sputters and damn near dies until I let off the gas, then it
> comes back
> >again.
> >
> >At idle, if I go WOT instantly, it acts similarly,
> pops..sputters etc until I
> >
> >let off, then it goes back to idle.
> >
> >
> >Things Ive tried: New ECU, no change. New MFTS, no change.
> Checked, double
> >checked and triple checked all my powers and grounds to the
> ECU and they are
>
> >good. Up next is MAF, but not sure how to check it.
> >
> >Any other things Im missing? Thanks for any tips!
> >
> >
> >
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