Skip to main content
Gerry | Vanagon
Checking account...
← vanagon.com home · Continue the discussion in the forum
Subject:Re: 85 Vangon revs drops, revs drops, revs drops, and then dies after a few minutes of this cycle
From:David Beierl
Date:Mon, 24 Jan 2011 23:57:03 -0500

At 11:36 PM 1/24/2011, Scott Daniel  - Turbovans wrote:
>I suppose that could be true about a 1.9.
>it sure seems to me though ..
>if it's designed and built to have idle switch contact at zero throttle..
>that's how we should repair and adjust them.

Oh, no question about that.  They're supposed to be that way.  And
I've always thought it was kind of neat that in theory you could
start at the top of a mountain and arrive at the bottom with a cold engine.

>it would be nice to see if injector signal is cut off at zero
>throttle above whatever the rpm is for that ..
>would be interesting to see ,
>then see if no idle switch contact keeps that feature from working.

Ask anyone with a Digitool.  Used to be I could tell you the rpm that
the injectors would come back on, but no more.*  On the 2.1l you have
to get above 2500 rpm before anything will happen, and it cuts out
when you reach 1500 rpm - so the automatics don't spend nearly as
much time with the fuel shut off around town as the manuals.

*Ok, 24.33 says that with throttle closed the 1.9l will shut off the
fuel at 1500 rpm and turn it back on again at idle speed.  Which of
course is why it bucks if the switch doesn't open soon enough.

Yours,
David