I have experienced a similar problem with one of my 87 Syncro's. Cold start
and run is fine. Problem comes when the engine begins to heat up. Too much
fuel when running warm. I have switched out the blue temp sensor with a new
one, tried swapping computers with one of the other Syncros, put on a
brand-new airflow box, idle regulator, idle satbilizer, and switched O2
sensors with a "used" one. Nothing has made a difference. I have given up
and sent the vehicle to my mechanic, and now he is baffled.

He did find the the low (hot) resistance given by the new temp sensor was
not dropping quite low enough, but replacing it with another new one did
not help either. Monday I should know if a new O2 sensor is going to make a
difference.

Any other suggestions would be welcome. When we discover a remedy I will
post it to the list.

Mike Vickey northwestern Pennsylvania - on beautiful Lake Erie
vickrail@velocity.net

My VW van collection:
84 Wolfsburg Vanagon (parts)
85 DblCab PickUp light gray
87 GL Syncro #1 Wolfram gray "Flash"
87 GL Syncro #2 dove blue met. "The Blue Flash"
87 GL Syncro #3 Wolfram gray
87 GL Brown "Betty"
88 DblCab PickUp slate blue
91 GL Westfalia Camper Orly blue
93 Eurovan MV Tornado red

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