At 03:49 PM 4/15/2011, David White wrote: >Driving down the road, in the rain, both the coolant temp gauge and >fuel tank gauge go to zero. Both gauges are supplied with +10v from the voltage regulator on the panel, so if there's a problem with it or its wiring the gauges will stop. The regulator gets +12v along with the rest of the panel so any wiring problem is on the flexible circuit at or near the regulator itself (see 90.4 figure 2). Be gentle with the flexible circuit, especially if it's a hot-weather vehicle - some of them are delaminating. >start the engine the coolant temp light blinks forever but it's >pretty faint. When I start the engine sometimes the coolant blinks >for the three seconds, other times it never blinks. The rest of the >lights on the dash are bright. What's the deal? 1984 Vanagon GL Get the voltage within spec and then revisit the LED blinker. Proper operation is 2-3 second blink at key-on. If voltage is correct (10 +/- 0.5v) and you get extended blinking, very high probability you need to replace or have replaced a 10 uF 16v capacitor inside the temp gauge which controls blink duration. Blink brightness (assuming input voltage ok) is the LED itself. Replacing it is quite possible but not completely straightforward as it's a self-blinking LED that runs on 5.0 volts, not a standard one like the rest of the panel LEDs. We can talk about that after you get the gauges reading correctly. Yrs, d |
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Vanagon mail messages have been archived.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.