Another thing to try is the distributor rotor arm.   They have a resistor
which gets burned out, especially the non-Bosch ones.  I had one go on a
cross country trip and was mystified for many miles by low power,
occasional bcking, and rotten gas mileage.   (Then was frustrated trying to
find a rotor in Montana...)   Bentley has resistance measurements for the
rotor and the ignition harness.   Now I always carry a spare rotor and cap.

Dave
87 Wolfsburg
90 Westfalia

At 08:06 PM 7/4/99 -0700, john schaper wrote:
>I have been reading the archives trying to find a fix my problem
>on a 85 vanagon 1.9 which started about a month ago.  About
>60 miles from town the van started surging and progressively
>got worse.  I turned around and had to go up mountains with
>about 4,000 foot vertical--I eventually downshifted to 2nd
>and crawled at 20-30 mph.  Once the engine cools the problem
>disappears until it warms up--ie.2-3 miles or 5-10 minutes.
>
>This has been my problem solving so far.
>
>1.  AFM is about 4 months old--rebuild bosch.
>2.  O2 sensor is about 4 months old.
>3.  Replaced Temp Sensor II--no affect on problem
>4.  Looked at catalytic converter today--it is OK.
>5.  Went to Bentley's and did the multimeter checks, for
>    the fuel injection system, Section 24, I think,
>    things looked OK, but on the ECU plug the ohms for
>    the temp sensor I was extremely low, although at
>    pin 2 and 4 on the sensor itself, the ohms were
>    within limits.
>6.  I also installed the "magic harness" which did not
>    solve the problem.
>
>I would love to find the "magic bullet" to solve the problem.
>
>Can anyone give me any advice?
>
>
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