100% the same problem, it was my 02 sensor. Disconnect yours and the issue
should go away (if it's the 02). Then you know and can replace! Mine got
progressively worse. Started like yours on longer trips then it eventually
didn't want to get out of the driveway w/o hesitation and missing.

Shawn

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Mike Miller
Sent: Sunday, June 04, 2006 12:34 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Intermittent engine miss

Vannuts,

Driving back from a camping trip my new syncro ran well for 180 miles. 90
degree heat, AC running and going about 65-70 down I 5 in California.

As I was getting off the freeway for gas it suddenly started missing. Idle
about 500 rpm, very difficult to get the revs up in any gear.

Stopped for fuel [a bargain $2.99.9 a gallon] opened the engine cover to let
it cool. Checked all the plug leads and looked for loose wires, etc.

Filled up and it started right up and ran fine...until I tried to get back
on the freeway. Same deal, missing heavily and would only hold about 45-50
mph on level ground. Same in all gears, if anything worse in lower gears.
Then it would catch and run smoothly for from 1 to about 30 seconds. Then
the miss came back.

Got home. Used 1/2 tank gas to go 49 miles.

Any ideas?

TIA

Mike