W203 Coupe...sticky thermo?

[BillyW124]

Evening Guys,

On my Mrs's 203 coupe, ive noticed (despite the cold weather) the engine temp takes an awful long time to warm up. I know it shouldnt take this long.

I timed it the other day, and after 17 mins of start stop town driving it's no way near the 80deg mark. 17 mins is a lot of time to get it up there.

Sometimes after 5mins of driving it stays stone cold flat on the guage. It at least should move a little??

As a result MPG is suffering.

Its a recent purchase and despite the full wack service carried out recently im thinking ive got a sticky thermo.

Can anyone confirm if these cars take a long time to warm like this? I suspect not.

Cheers.

 

[Stratman]

It should warm up much more quickly than that. I'd say it's 99.9% certain to be the thermostat. They're famous for not working.

 

[BillyW124]

It should warm up much more quickly than that. I'd say it's 99.9% certain to be the thermostat. They're famous for not working.

Thanks Stratman, I did have it in mind when i sent it for a service but i thought id see first if it would have made a difference. Clearly not.

I just hope it is the thermo and nothing more.

 

[BillyW124]

we defo saying thermo?

 

[BillyW124]

Just an update, Thermo changed today and can confirm it was stuck open.

Engine now warms up quicker and temp gauge is a couple of notches north of 80deg. Somthing it never seemed to achieve. Always was under even when running for an hour or so.

MPG has increased too, so im a happy man.