One thing worth checking is the polarity. IIRC, for some reason, I had to switch the connections at the back of the VDO gauge. i.e. black to positive. The connector at the engine bay was on properly, but I still had to reverse the connections at the VDO. Remember that there are seperate connections for the sender, and VDO display light. Cheers, Neil. -- Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" (Bustorius) Please send fav Vanagon/Westfalia links to me at: musomuso1963@hotmail.com
On 10/6/07, Jake Beaulieu <jbeaulie@nd.edu> wrote: > "First according to my infrared therm. the heads near the intake never went > above about 200 so was that hot enough for the cht to register? The > needle on the cht guage didn't move ever. I hope to drive the van soon, > at what temp should the guage register? Are there ways to test the > guage/sender." > > Hey John, > > The sender on the CHT gauge generates its own voltage when heated up. You > can test to make sure the sender is working by hooking it up to a volt > meter and then holding the sender ring under a lighter. You should get a > measureable voltage. I have done this, but i don't remember what the > magnitude of the voltage was, pretty low I think. If the sender is > working then connect it to the gauge and again hold the sender under a > flame. You should get a reading. Just don't make the same mistake I did > and run power to the sender circuit on the back of the gauge. That fried > the gauge in short order! > > good luck, > jake > |
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Vanagon mail messages have been archived.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.