I have also heard of the cylinder wall cracking if run too long w/o coolant. After all, they are just thin sleeves. This causes pressurization of the cooling system in the same manner as does the leaking head seal problem. Now the question - my '88 fails smog check (CA)with too high HC at idle, but does fine at 2500 RPM. But it also will rev up to 2000 RPM or higher on it's own, usually when warm. Blipping the gas does not cure it. I believe the two are related. The accelerator cable is not sticking, the O2 sensor is fairly fresh, I opened and looked into the airflow meter, and it looks ok, and measures within specs, resistively speaking. I believe the temp sensor (left front of engine) is ok. I've checked all the grounds and electrical connections I can find, and am considering doing brain surgery to it next. Ideas? Thanks, Ron Antaki |
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Vanagon mail messages have been archived.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.