Under load the ECU responds to a closed throttle switch as being at full
throttle so instead of over running cut out you get full throttle
enrichment.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
pickle vanagon
Sent: Wednesday, May 23, 2012 11:45 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: 86 Syncro 2.1 surging at 2K rpm no load

Doesn't this sound like it thinks the pedal is out and its trying to engine
brake when the rpms get high?

Is a clickly idle switch conclusive?  Maybe double check continuity of the
switch at idle?

Granted, I don't understand why it would get better under load...