Re: temperature gauge question

["Fred Munro" <munrof@isys.ca>]

-----Original Message-----
From: Dixon <biwltud@bellsouth.net>
Date: Friday, March 13, 1998 3:25 PM
Subject: temperature gauge question


>What are possible causes for intermittent operation of the temperature
>gauge on an '89 100?  Following the Bentley procedure, I have checked
>the resistance of both sensors on the upper cooling hose ( ~3.3k ohms at
>50 deg F and ~230-250 ohms when hot) and the voltage on the connecting
>harness (4.95V on one terminal and 4.75V on the other).
>3.3k ohms is above the spec. in the manual, but the resistance does seem
>to change properly versus temperature.  Is there something in the gauge
>unit itself (I don't look forward to the idea of dash disassembly) that
>typically fails?  It appears aggravated at cold temperature.  Thanks for
>reading.
>
>Adam Dixon
>'89 100  130k

Hi Adam;

    I had this problem on a '86 5ktq. It was a bad temperature sensor.

HTH

Fred Munro
'91 200q  247k km