Audi 100 and 'Old' A6 (1991 - 1997) - 1993 2.0 petrol - low water temp.

Honest John Back Room » Technical matters
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Sun 24 Feb 2008 21:11
1993 2.0 petrol - low water temp. - Briana100
I have an Audi 100 1993 2.0 petrol with a lazy water temp gauge. Takes a long time to start reading and then only reads up to 50c when engine at normal temp. Can anyone tell me how to check sender unit or gauge in order to find out if faulty or likely cause of fault.

Edited by Webmaster on 24/02/2008 at 22:55

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Sun 24 Feb 2008 21:22
Water temp. - Screwloose

Is the gauge incorrect - or is "normal" temp too low due to a failed thermostat?
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Tue 26 Feb 2008 09:45
Water temp. - Briana100
Thermostat has now been checked and is working correctly
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Sun 24 Feb 2008 21:23
Water temp. - Waino
Are you sure it's a 'lazy' temperature gauge? Blaming your temp gauge can be as fatal as blaming your 'faulty' compass ;-)

There have been lots of posts recently about cooling system problems and the first likelihood seems to be a dodgy thermostat.
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Mon 25 Feb 2008 11:26
Water temp. - Briana100
Many thanks.
Have recently replaced head gasket etc and water cooler to oil pump as it failed and pumped all of sump into water system. Have replaced thermostat but will check if sticking.
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Mon 25 Feb 2008 11:25
1993 2.0 petrol - low water temp. - Briana100
Many thanks
Have recently done head gasket and then oil cooler as it failed between water and oil and pumped all sump into water system I have replaced thermostat but will check if sticking.
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