This sounds like the tach is not properly grounded. What ground it is seeing, is thru another device, witch give it some resistance. Eric Anthony Hecht wrote: > Hi, > > Can anyone explain to me why this would happen: > After installing my new tach, I started the engine. The reading was way too > high (2-3000 or more). So I went in the back and hooked up my tach/dwell > meter. When the meter was connected in the back, the readings matched up, > i.e. the tach on the dash dropped to what seems to be a correct reading. > With the tach/dwell disconnected, the dash tach jumps up. > > I've checked the dip switches, they're correct, 1 - On, 2 - Off, 3 - Off. I > tried fiddling with the potentiometer screw in the back of the tach and I > was able to bring the reading down a bit, but not able to make it correct. > > Thanks.. > > --------------------------------------------------- > Anthony Hecht > '80 Camper "Badunkadunk" > Somewhere Between Virginia and Tuesday > http://travelinvan.com > --------------------------------------------------- |
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Vanagon mail messages have been archived.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.