One item that is critical, for efficient which old Roky seemed to overlook, as most folks do, is the throttle positioning switch which tells the ECU when and where the the throttle is where. This should be one of the first items to be checked, adjusted or replaces in a situation like this. The plastic operating cam does wear out after so many miles and completely changes the fuelling situation from off idle, or at WOT. Very few folks even think about this device which in most cases should be the very first item to adjust or replace. If you Rocky just take the throttle wire with you hand, and just crack open the throttle, and if you don't hear an immediate "CLICK", you have located the problem. Once every 100,000 miles this item at least should be looked at, adjusted, and replaced if needed. Then start fishing for problems at the coolant temp sensor, the oxy sensor, and possibly the FPR. I believe the fuleing problem isn't really there. It's part of an electrical engine management system that is causing the problem's. |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.