Idle problems 90Q (NG engine

[SuffolkD at aol.com]

In a message dated 5/25/2006 12:10:18 PM Eastern Daylight Time, 
quattro-request at audifans.com writes:


Eyvind:

Read my write up on an older 80 (4000Q):
http://www.quattro123.com/4000VacuumLeaksandWires.htm

If the DPR is the two screw part with the two pin electrical connector
I've had to replace them in order to get it to run well,

Swapping a part from a junk or wrecked car is usually how you can get the 
item alone.

The two electric terminals are supposed to have an Ohm value (steady / 
constant) of around 460 OHms?  If you get an open circuit, or infinitity your units 
bad.

I suspect these go bad when the leads to the electrical connector go bad, 
frey or ground out.......................or when dirty fuel gets past the fuel 
filter..........clogging the inside of the DPR.
-Scott by BOSTON quattro123.com




> From: "Eyvind Spangen" <>
> 
> Messed around a bit more today. I found that if I disconnect the DPR (dark 
> grey on front of fuel distributor), the car will idle almost normal, just a 
> bit high (just below 1000 rpm). If I reconnect it, it will stumble for a 
>