MX-3.com

Hey all,
Im having problems with my cars temp. gauge I warm up my car, the gauge goes to the normal place to tell me its warm so I start to drive, once I go on the highway hit the gas and go past 50, and/or turn on the heat the gauge goes from normal which is almost the middle to below the "C" like if the engine was cold what could it be......Help Please

Your gauge starts out displaying the temperature as it warms so problem is more likely a defective temperature sending unit on the motor and not the temp guage on the instrument cluster. Sounds like the sending unit is working ok initially, when cold, and when it reaches a certain temperature heat range it stops working so doesn't "send" to the gauge at that point. The fix is to replace the sending unit (a threaded unit mounted near the thermostat)

It would be a good idea to replace the thermostat too.

Hi,

I have the same problem, did you manage to replace the two items?

Did it sort it out?

Thanks,

Stupid question ... Your coolant isn't low is it?
-Eric

No,
Actually checked the thermostat the other day to discover, there wasn't one in there,

I've just had the entire engine replaced, so it might've shipped without one. Just waiting for the gasket and O-Ring and I should be back on the road soon.

Thanks,