Running lean on boost

[Jesse A Clendenning]

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[ Picked text/plain from multipart/alternative ]
 Thanks Doyt - The lower wastegate hose is new. Thank you though. When it w=
as replaced it was in aweful shape. It is holding solid.




I'd check the lower vacuum hose on the wastegate...the short heavy one that=
 runs from the bottom of the wastegate to the intake manifold.  You have to=
 take out the windshield washer bottle to even find it.  Mine looked OK, bu=
t had hardenened up from manifold heat and had crumbled to powder and gotte=
n pulled into the intake manifold.  All that remained was the fabric sleeve=
 that once covered the hose. It looked OK, but when you grabbed it between =
thumb and finger, there was no hose inside!There may be other causes for yo=
ur problem, but that lower WG hose could be doing it, IMO.Doyt87 5ktq   Ohi=
o   USA>>>>>>>>>>>>>>>>>=
>>>>>>>>>>>>>----- Original Message =
-----From: Jesse A ClendenningSent: 11/25/02 11:26:18 AMTo: quattro at audifan=
s=2EcomSubject: Re: Running lean on boost>>> --> [ Picked text/=
plain from multipart/alternative ]>>>>>> I get no codes a=
nd the idle and full throttle switch are working. They are relatively new a=
nd I have installed an LED in the blank plastic dohicky in the dash to indi=
cate when the computer is trying to add boost via the FV as per www.sjmauto=
technik.com. Let me know if you think of anything else. I'm brainstorming h=
ere.>>> At 08:40 AM 11/25/02 , you wrote:>-->[ Picked text/p=
lain from multipart/alternative ]>  Hi folks, On my 5ktq, whenever I am =
at ~5 psi boost - verified by an> external guage and the dash guage - th=
e mixture goes lean and the car> spits and sputters (verified by air/fue=
l guage). My fuel pump makes a lot> of noise and I have been somewhat su=
spect of it. I also know that a> vacuum leak on the intake side of the t=
urbo can cause lean running on> boost. I replaced everything here to be =
certain I have no leak.  I am> leaning towards the fuel pump at the mome=
nt. My fuel pressure guage was> borrowed by my brother and I have not ru=
n a fuel pump delivery rate check> in a while. I was just checking if an=
y of you knew of any other reasons> that I could be running lean on boos=
t - so much so the car will spit and> sputter. Thanks Jesse Clendenning&=
gt;>_______________________________________________>Join Excite! - ht=
tp://www.excite.com>The most personalized portal on the Web!Have you dum=
ped any codes yet?  Is the idle/wot switch working?Regards,- Tonylots of I-=
5 Audis>> _______________________________________________> Join Ex=
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