Temperature gauge is very temperamental.

[KarlT]

Hi All.

Temperature gauge is very temperamental.

Worked for a while, then would drop down for 5 minutes before returning to normal. Now mostly doesn't work but will occasionally flutter up to cold before dropping back down. Have checked wiring both ends seems ok.

Question is........

Sender seems very basic. How common is it to have a sporadic fault? Is that behavior much more likely to be the gauge?

[Westy.Club.Joker]

Try using a length of cable to bypass the OE wiring, just run a length of it through the cabin to try it out. If that cures the fault then it`s a broken/intermittent wiring problem.

[KarlT]

You know it makes sense!!!

[sevy]

clean the multi plug in the dash pod also its a bugger for corroding

[amazingdave]

If the gauge also flies up to max occasionally then you may have air in your system....

Dave

[Rozzo]

to test the wiring unplug the wire from the sender unit and earth it to either the engine or the chassis, the guage needle should then go hard over to maximum. if it does you know the problem is with the sender.
if it doesn't the wiring or guage is at fault.

[KarlT]

Thanks everyone.

Will try out your suggestions this week. Soon as I can face emptying the boot! I knew that earthing point I set up for my buzzer of doom would come in handy again sometime!!

[ringo]

Dudes,

Where is the sender ? Is this the same one in the tank that flashes when the water level is low ?

Thanks

Ringo

[KarlT]

No, on the 2.1 its on the thermostat. Front left of engine.

[ringo]

LOL - bit different on the Diesel - but obviously on the engine - doh!

Anyway, i was having the same symptoms as you - but that was because i had accidentally pulled off the connector when messing around with the rocker cover! That was an easy fix!

Thanks

Ringo

No, on the 2.1 its on the thermostat. Front left of engine.