[s-cars] boost/vacuum and air/fuel gauge stuff...

[Pollock, Thomas]

Greetings fellow s-heads !

I've got a few questions/problems I'm hoping someone can comment on and also need a sanity check for what I'm seeing in my newly installed air-fuel gauge.

I finally got around to installing my autometer boost and air fuel gauges. I wasn't COMPLETELY surprised that I'm only seeing around 10lbs of boost max. The car has seemed down on power for a while now and I'm guessing I have a leak somewhere, although  I'm hoping it's JUST a leak as someone recently mentioned seeing 14lbs WITH leaking hoses...  I DID see the gauge hit 16lbs a couple of times so there's hope.  Sound reasonable ?

Sanity check time. At idle I see constant 17" of vacuum and tooling around I NEVER see anything close to boost. Matter of fact, most of the time I'm sucking wind.  I don't see any boost till my right foot is really into it. Not sure how else to quantify...  Is this normal ?
I'm really surprised. I thought if nothing else, I'd be around even boost/vacuum when just cruising...

Next problem is the air/fuel gauge is all over the place !  Even after a complete warm up the thing bounces pretty much the whole range.  At idle it sits in the stoich range but still hunts.  Gotta be the 02 sensor (I hope) but the previous owner had it replaced about 40k miles ago. Sound reasonable ?   If anyone is interested I took a bunch of pictures of the gauge install procedure. The biggest problem I ran into was trying to get a little too cute and installing a OEM switch into a dead switch spot for power and illumens. That harness has NO slack whatsoever and required an almost complete disassembly of center console. Sheesh.

Last but not least, while doing the install I noticed I have a oil leak at the top oil pressure switch. There are two sending units and the one that's leaking is the one on TOP.  Would anyone have a part number handy and what are the chances that thepartsbin or equivalent would stock this kind of part ?  Guessing I need to visit the local Audi counter ?

I have a couple more request for info but I need to try to separate my "actual problems" from my "paranoia"...

As usual, thanks in advance !!!

Down to 2 Audis !  but looking again 8-)

94 100csq
94 s4



> Tom Pollock
> Compaq Computer Corporation
> AlphaServer Product Development
> *Tel (508)467-4441
> * thomas.pollock at compaq.com
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