[urq] Lift Throttle Unintended Acceleration - '83 UrQ

[Brandon Rogers]

Partial throttle power, IME, and with others around here, often exceeds WOT 
power in Audi CIS turbo cars - one of the wonderful mysteries of CIS....

Brandon

----- Original Message ----- 
From: "Ben Swann" <benswann at comcast.net>
To: "'Michael Hopton'" <Michael at siliconoptix.com>; <urq at audifans.com>
Sent: Friday, February 17, 2006 11:51 AM
Subject: Re: [urq] Lift Throttle Unintended Acceleration - '83 UrQ


>I thought it might have something to do with the WOT switch, but not in 
>this
> manner.  I doubt it because this happens when backing off the accelerator
> and not necessarily letting the throttle slam shut.  There is nothing
> physically wrong with the switch that keeps the throttle from closing. 
> I've
> been all over this engine and now it is not broken or jammed.
>
> I figured it may have to do with the adjustment of the switch - when it
> open/closes, but other than where it opens with respect to throttle
> position, WOT switch operation is normal.  I do not necessarily have it
> adjusted to factory spec., so WOT switch is suspect.  Just looking for 
> some
> verification of this or something else - perhaps some BTDT.
>
> Ben
>
> -----Original Message-----
> From: Michael Hopton [mailto:Michael at siliconoptix.com]
> Sent: Friday, February 17, 2006 1:21 PM
> To: benswann at comcast.net; urq at audifans.com
> Subject: RE: [urq] Lift Throttle Unintended Acceleration - '83 UrQ
>
> Ben,
> It could well be the WOT switch stopping the throttle from
> closing. Worst case it will actually keep the throttle open
> quite exciting when accelerating hard and then trying to
> brake for a corner.
>
> The bent piece of metal on the switch can cause the throttle
> to stay open if it is not set properly, btdt.
>
> Cheers, Mike
>
> -----Original Message-----
> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
> Behalf Of Ben Swann
> Sent: Friday, February 17, 2006 1:05 PM
> To: urq at audifans.com
> Cc: benswann at comcast.net
> Subject: [urq] Lift Throttle Unintended Acceleration - '83 UrQ
>
> OK - Being a little sarcastic here, and I don't mean to unbury two sets
> of old phenomenon, yet I have an interesting feature my car presents
> that I suppose could be described by the Subject line: Lift Throttle
> Unintended Acceleration with my '83 Ur Quattro.
>
>
>
> Basically, I'll be accelerating nearly Wide Open Throttle - no problem
> there.  However, have noticed that when I begin to lift my foot off the
> go pedal, either to reduce acceleration, or to slow down, there is a
> momentary acceleration surge.  So I'm wondering what the cause may be.
> It seems that there may be more power to be had, since the car briefly
> seems more powerful when letting off the throttle, as it accelerates
> briefly then it decelerates normally.  It also is a little unnerving
> when you go to slow down and the car speeds up.
>
>
>
> Ben
>
> benswann at comcast.net
>
>
>
> _______________________________________________
> Audifans urq mailing list
> Send posts to: mailto:urq at audifans.com
> Manage your list connection:
> http://www.audifans.com/mailman/listinfo/urq
> Have an urq question?  Check the Audifans Knowledgebase!
> http://www.audifans.com/twiki/bin/view/Audi/UrQuattro
> Have an urq answer? ... Please help others by adding to the KB ... all
> contributions welcome!
>
> _______________________________________________
> Audifans urq mailing list
> Send posts to: mailto:urq at audifans.com
> Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
> Have an urq question?  Check the Audifans Knowledgebase!
> http://www.audifans.com/twiki/bin/view/Audi/UrQuattro
> Have an urq answer? ... Please help others by adding to the KB ... all 
> contributions welcome!