Fiesta Temp Gauge

[peterd]

My sisters Fiesta ('87 LX ) has a problem with the temp gauge. Hot & cool air still comes through the vents but the gauge doesn't budge at all. Anyone any ideas why ?

[jake-the-peg]

If the guage doesn't move at all then it's most probably a fault with the guage or sensor.

I think the sensor is a small brass item screwed into the cylynder head just below the thermostat with a single wire going to it.

If you pull off that wire and hold it to a good earth point on the body you should get a high reading on the temperature guage. If not the guage is most likely faulty. If so it's probably the sender.

The sender come out with a 1/2" spanner and a bit of wd40 a replacement is about �15 from ford or about half that from an independent.

I'd advise investing a few quid in a Haynes manual

[essex bloke]

hello jakes right depending on the engine size some 1300 cc have the sensor in the heater hose located at the back of the engine or 16v try the inlet manifold at the front.

[peterd]

Cheers guys, meant to say it a '97 Fiesta. Oh well looks like I'll be under the bonnet this weekend for w while

[jake-the-peg]

That's interesting because I picked up a 1.1 95 fiesta recently and replaced the tem sensor because it was reading so low I thought there was a fault.

Not much difference I reckon they're all fitted with the same radiator and cooling whatever the engine so the smaller ones run cool.

If you replace the sensor spray it with wd40 a couple of days before you remove it and you'll find you want an imperial half inch spanner for it (Uncle Henry's still in the dark ages)