John S. Lagnese jlagnese at
Wed Feb 27 16:17:30 PST 2008

I'll check that tomorrow on the way to work. I have already replaced the MC. 
I had the RF caliper not releasing last year.
----- Original Message ----- 
From: "Doyt W. Echelberger" <doyt at>
To: <quattro at>
Cc: "John S. Lagnese" <jlagnese at>
Sent: Wednesday, February 27, 2008 10:00 AM
Subject: Re: Shudder?

> You could eliminate the brakes as a cause of the shudder.....When that 
> shudder is happening, pull over and walk around the car, putting the palm 
> of your hand on each wheel.....feel the temperature the wheel.  If the 
> shudder is associated with brakes grabbing, you won't be able to keep your 
> hand on the affected wheels very long. Eventually there was smoke and the 
> smell of hot brakes when this condition was at its worst......but it crept 
> up on me.
> That is how I became aware of a brake grabbing problem on my 87 5ktq a few 
> years ago....and it required replacing the master cylinder.
> Here are some other symptoms, as seen by another quattro list member (Ron 
> Wainwright) back in 2002: "I was coming to a stop sign up a little hill 
> and when I stopped I put the car in neutral, but I didn't roll back. Car 
> kinda felt like it had the E-brake on so when I got home I checked it and 
> noticed that the rim and rotor were very hot to the touch, so the next day 
> I took the caliper apart thinking that the piston was frozen but it wasn't 
> ( and my E-brake cables have been disconnected prior) and bled the system 
> didn't notice any thing after that for a week then while pulling in the 
> driveway at night I noticed the rear driver side rotor was glowing red but 
> I know that the calipers are working."
> Doyt
> >>>>>>>>>>>>>>>>>>
> At 11:41 PM 2/26/2008, you wrote:
>>This is in my 91 200 TQ 20V with 126k miles. It is overdue on the 120K 
>>timing belt change.  I'm experiencing an odd shudder at highway speeds. 
>>This had been occurring after about 1/2 hr at highway speed. I thought it 
>>may be the transmission. This is how I found out about the transmission 
>>leak. I checked the gear oil level.
>>Oil in tranny and still the shudder. It feels like an engine miss, but 
>>this doesn't happen at lower speeds and similar rpm. What else should I 
>>check? Could this be an inner (passenger side) cv joint?

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