[A4] Stumbling at low RPMs

[Tom Christiansen]

Derek,

I know of two: Advanced European in Bothell and German Car Specialists in
Bellevue. For stealerships, I've had good work done both at Robert Larson in
Tacoma and University Audi in Seattle (45th & Roosevelt).

I had Advanced European replace the starter in my 1994 90S. It had failed
when the ignition switch got stuck in the start position and I didn't
notice... They replaced the starter fine, but couldn't replace the ignition
switch. They tried to replace it from below, but failed. The ignition switch
replacement procedure is outlined in the Bentley manual and is pretty easy.
It took me about half an hour to do. So I'm not real impressed by
Advanced...

German Car Specialists replaced the timing belt and associated pieces. They
were about 10-15% less expensive than the dealer. They did really nice work.
I have a high degree of confidence in the shop and their work. They have one
guy (Zacho if I recall correctly) dedicated to the Audi stuff. I'd do
business there again if need be.

Tom

On Mon, Jul 28, 2008 at 12:17 PM, Derek Pulvino <dbpulvino at hotmail.com>wrote:

>
> Nick,
>
> Thanks for input.  I did recently go through and change I think all but one
> or two of the EGR vacuum lines with new runs.  Maybe those are the culprit.
>  I was prompted by an intermittent EGR system leak that was picked up when I
> ran a diagnostic with a borrowed VAGCOM.
>
> Maybe I'll have to take another gander, although getting to the point where
> I'm willing to pay a shop to troubleshoot this for me.
>
> Say, anyone have a recommendation for an independent Audi shop in Seattle
> proper?  I've used Redmond Workshop in the past, but it'd be nice to find
> someone a little closer to home.
>
> Derek
> Date: Mon, 28 Jul 2008 11:22:50 -0700
> From: nickstock at gmail.com
> To: dbpulvino at hotmail.com; a4 at audifans.com
> Subject: Re: [A4] Stumbling at low RPMs
>
> Derek,
> I had a very similar problem on my old 2000 1.8T. It was indeed a vacuum
> leak as some of the braided hoses had become brittle. I replaced them all
> with some decent silicone hose and the problem went away. I think the reason
> it may happen at low RPM is that the vacuum is low...the higher the vacuum
> becomes may help to suck the tear/rupture back in to place? Just an idea...
>
> HTH,
> Nick
>
> On Mon, Jul 28, 2008 at 10:59 AM, Derek Pulvino <dbpulvino at hotmail.com>
> wrote:
>
>
>
> Car is a 99-A4 w/V6.
>
>
>
> As of late noticing a stumbling/missing on acceleration at low rpms.
>  Usually notice it from about 500- to 1500-rpms when accelerating at part
> throttle.  Car idles fine and not getting any "check engine" light
> illuminations.  If on say 1st gear acceleration I keep the rpms up at 1200
> to 1500 and slip the clutch a bit it doesn't happen, and never see it
> occurring during freeway cruising or otherwise. Also seems to have gotten
> worse with the warmer weather, but that may also just be a coincidence.
>
>
>
>
> As I don't have a VAG-Com, haven't been able to check for fault codes.
>  Guessing that would be a good place to start, but otherwise, any other
> ideas?  Would almost seem like a vacuum leak, but not sure why it would only
> occur at low rpms.
>
>
>
>
> derek
>
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