190e water temp now only 60*

[1993190E]

After trip on A & B roads the water temp on my 12ik mileage 1993 190e now reads 60* C used to be 80 * C and in heavy traffic 90*.
Is this a sign the thermostat is at fault ? The heater seems to be working fine coolant level still OK

If just the Thermo any handy hints when replacing would be most appreciated

 

[turnipsock]

It sound like the thermostat is stuck open.

It's pretty easy to change.

If you want to check it, put it in a pot of water, along with a new one. Slowly warm the water and watch when they open...the new one should open at the correct temp.

 

[mike65]

Why would you buy a new one to test the old one?

Mike.

 

[bundy]

think it might be the weather... its been blo....y cold lately

 

[mike65]

Cold weather can suppress the readout temp, but only by a degree or two.

Mike.

 

[television]

You have two things, the thermostat and the sender. Without taking the thermostat out to test, is the car taking a long time to get warm,and can you get the inside as warm as you used to within a given time scale.
Before we had header tanks it was easy to drop a thermometer in the rad.
If the above is all OK then its the sender that screws into the water jacket in the block.

Malcolm

 

[1993190E]

I have now replaced the thermostat - temp 80* after 5miles - heater sheer bliss. Thanks to all respondees!