Damon,

Welcome to the list!
A good thing to do is hook  up some wires to the 2 outside brass terminals
on the back of the gauge. Make them long enough to extend out of the
instrument pod to where you can attach a voltmeter to them while you're
driving. You want to see about 10 volts to the gauge. If you see less than
10v, look at the blue flexy printed circuit from the voltage regulator
(small, square black transistor? with 3 legs on the back side of the tach
cluster) for any weak connection points.

Another thing that sometimes helps these intermittent problems is using a
contact cleaner on the large plug and the blue flexy that it connects to.

John Meeks
'91 Multivan
Northern Michigan

Vanagon Rescue Squad
www.vanagonauts.com

On Tue, Sep 21, 2010 at 10:49 AM, Damon Hill <wellyoufoundme@gmail.com>wrote:

> Damon here, first time poster.
> My 85' GL low coolant light randomly comes on. Sometimes it will blink
> until I'm up to temp, sometimes it just blinks at random. I have checked for
> a loose connection and diligently check the coolant at least a couple times
> a day. Fan comes on appropriately and hoses don't appear to be resticted. Is
> this a notorious gauge thing? Or is this something I should dig into much
> further.
> I am probably supposed to post more vehicle bio info...promise to do that
> next post.
> Thanks in advance for your thoughts, D
> Sent on the Sprint� Now Network from my BlackBerry�