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Date:         Thu, 1 May 2003 00:07:25 -0400
Reply-To:     Keith Adams <keith_adams@TRANSCANADA.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Keith Adams <keith_adams@TRANSCANADA.COM>
Subject:      Re: hesitating when warm? - UPDATE

A few said it could be my O2 sensor.  I checked the ground for it, cleaned the grounding
point from head to chassis.  Drove it until it started misbehaving (right at operating temp).
Shut off the engine, disconnected the O2 sensor, restarted it and to no avail.  Still no
improvement.


I removed the boot from throttle body to AFM and checked for cracks and tears - none.  I also
swapped the AFM for my spare, just to see.  None of it to any avail.  I've also tried
disconnecting the ISV which didn't help.


I'm fighting this, the remnants of a blizzard that dumped 12-16 inches of snow on us last
Saturday, and a sinus infection.  I could fix the van right now with one match if I thought it
would work!


Up until it's warm, the van runs like a dream.  Once at operating temp though, all goes south.
I can even hear it in the exhaust note - makes more of a flapping noise.


Any help appreciated,
Keith


On Fri, 25 Apr 2003 09:46:02 -0600, Keith Adams <keith_adams@TRANSCANADA.COM>
wrote:


>1986 2.1 2WD
>
>I just swapped my engine for my spare engine (old engine had
>blown head gasket).  Starts great, idles great.  Only one
>problem.  Once the engine is up to operating temperature, it
>stumbles and hesitates.  It behaves like it has water in the
>fuel.  To not overlook the obvious, I added methyl hydrate
>to the gas, but it's still behaving the same way.
>
>Basically, you step on the gas, and it just feels like the
>engine doesn't catch.  Then suddenly, it will catch for a
>few seconds, then hesitate again.  The engine sort of
>"stutters".  Idles fine.
>
>The thing that bugs me is that it runs GREAT when cold.
>When I swapped the engines, I replaced the Temp II sender,
>thermostat, upper and lower thermostat housings, coolant
>tee, rear main seal, clutch.  I have tried un plugging the
>ISV to no avail.  Checked to make sure I connect the engine
>ground strap.  Turn off the van, re-start, no help.  Nuttin.
>
>Any thoughts?
>Keith Adams | calgary.ab.ca
>http://www.clubveedub.com
>86 Westy | 59 Euro Beetle | 66 Beetle
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