Check wiring to/from the temp II sensor. My guess is that a previous owner incorrectly made adjustments, i.e. the big screw on throttle body, to compensate for a flaw in the idle control system and-OR a flaw at the temp II sensor or wiring to/from it. If it were me, I'd unplug the IC system then follow the Bentley timing etc. procedures and see if the engine will idle. If I recall, the yellow plug at firewall will disarm the IC system. (it disconnects power to the IC module) plug shown just right of centre in this image: https://lh4.googleusercontent.com/-w-xliMMxwo4/URlSA5NfVvI/AAAAAAAAG5U/8X7jRqzx3s8/s640/Fuel%2520line%2520pics%25202.jpg Neil. On 10/16/14, Stuart MacMillan <stuartmacm@gmail.com> wrote: > Just got my son's "new" '87, and we were told by the seller it had an idle > problem. He's driven it about 200 miles with nothing more than a bit of an > idle surge once in a while, but now it won't idle at all cold, and when it > warms up for a couple of minutes it races up to 3000 rpm and stays there. > Restarting doesn't help, and only when I unplug the idle control valve will > it stop (die). > > > > this? It seems odd that an engine can run at 3000 with the throttle > closed!
-- Neil n Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay> |
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