raffee

Hi, has anyone any idea why the temperature gauge only slightly moves when engine at full operating temp - it did go to mid point previously, also I have never heard or seen the electric fans operate? Engine appears to run okay.
Its a 1990 Sierra 2.0 DOHC.
Appreciate any advice.

AndyPen

iTrader: (24)

If its anything like the 2wd saff the sender dies mate. Same happened on bonkers rs500 when I had it last week.

Barry R

iTrader: (3)

You broke Bonkers 500 andy

tabetha

Just test the cicuit by earthing out the gauge sender wire on the engine, if the gauge goes to full reading, ie as hot as it can get the gauge is ok, if not the gauge or wiring is duff.
As said almost defo the sender, they don't last forever.
tabetha

raffee

Thanks for advice will give it a try. Your probably right the sender unit has never been changed so 20 years isn'y a bad innings!

Mike1

Plus if you don't like where the temp needle sits, try another one as the senders often make the needle sit differently . Did on mine anyway

AndyPen

iTrader: (24)

Nah, I mended it Barry Took it through the 19K mark after a lovely run - superb car.

AndyPen

iTrader: (24)

The Ford ones are still available and PJ motorsport do a good version too

Tabs test is a great idea mate - do that first eh?

tabetha

Early sierra gauges actually had adjustable platforms so the needle reading could be changed!!
If this has not had this sensor changed for 20 odd years, is the CTS the same age ?, if it is change it now.
tabetha