RE: F.I. Idle Surge

[Erik Pullman <epullman@abrinc.com>]

I recently battled the surging idle in my 73 SB.  The problem was a 
mis-adjusted auxillary air regulator in combination with the throttle 
position sensor being just a hair off adjustment.  I would check to see 
that the aux air regulator is fully closed when the engine is up to temp. 
 The temperature that is closes can be roughly adjusted by removing the 
unit.  There is a small screw that secures the bi-metalic coil to the base. 
 Also, some models (not mine) have a resistive heater that helps close the 
unit.  If you have one of these, check it out.  I have yet to find a 
setting for this unit that allows me to drive the car in all temperatures 
that we encounter in Fairbanks, AK (-40 to 100 F)  I usually adjust mine 
for winter, then again for summer, much like the electric choke units on 
older VW carbs.  This may sound crazy, but if anyone knows a better way of 
having a FI engine run smooth at start-up at -35 F, I woul like to know.
Erik Pullman
73 SB
71 Campmobile


-----Original Message-----
From:	Keith Park [SMTP:parkkj@orion.crd.ge.com]
Sent:	Tuesday, May 26, 1998 4:38 AM
To:	type3@vwtype3.org
Subject:	Re: F.I. Idle Surge

Sounds like a vacuum leak unless its a 71 then its a bad press sens, there 
hard to get.

Oil lights coming on is a sign of worn bearings, a near end of life engine.

Keith