Water Temperature Guage

[David Brown]

Out for a drive today and the temperature guage flickered up and down a few times and then died. How can I confirm with a multimeter that it is the sender that is broken - as per numerous postings. Intend to clean up contacts and test for continuity as first steps.

[mav]

Take the wire off the sender, and short it to earth. This should give full deflection of the needle on the guage. If this does happen then it is a sender issue.

[shn7]

Mav's correct. History also says that 99:1 it's the sender.

 

Steve.

[David Brown]

Thanks Mav, Steve for prompt response. Will try it in the morning and then phone CC.

[Chris W]

Mav's correct in his fault finding suggestion, but just to be complete, you must do this test (ie: shorting the sender lead to earth) with the ignition ON. Otherwise you will never get a deflection.

 

Chris

 

2003 1.8K SV 140hp see it here

[David Brown]

I appear to be 1 in 100. No deflection, cleaned contacts, working again!

Thanks for your help anyway.

[Bricol]

It'll do it again tomorrow - it's following the pattern!

 

I stuck a crossflow one in - reliably reads 120 degrees at normal . . . with space to spare if it wants to show higher.

 

I will find a cheap replacement that gives the right reading one day!

 

Bri