MrGreedy
MB Enthusiast
Good day all,
I know normally when people's cars aren't getting up to temp, the first place to look is the thermostat being on the way out.
The shift I'm about to explain is relatively minor, and not the 'struggles to get above 65°C' that we often get asked about.
Given that it's freezing outside, I'm clinging to the hope it's that and I don't need to get out and change my thermostat (I have a spare on the shelf, so getting the part isn't an issue).
Normally, the car warms up as expected, and sits at a rock solid 88/89°C once warmed.
However, last night, I needed to take a 1 hour trip, and it took a long time to get up to temperature.
It was late and I was in no rush, so it was a 56mph economy cruise, nearly all motorway, enjoying some music.
I noticed that the temperature only got to about 81-83°C, except for long inclines where it would climb to the expected 88/89°. After levelling out or on decent, it would fall back to 81-83°C.
Fuel economy took an expected hit, and I was only able to hit an average of 53mpg (believe me, I can usually get much more than this on a similar trip).
My first thought was thermostat likely on the way out. But it was -4°C, hitting -6°C in places.
Is this just a freezing temperature related issue, or do we think thermostat?
I've never driven the car for prolonged, easy cruise periods in such cold weather before.
Heat into the cabin wasn't affected, nor did it have an impact on the water temperature e.g. if I put fans on full blast full heat (with the window cracked because it was boiling), it didn't drop the temperature noticeably.
Note: on the '63 engine, PCS suggest some fluctuation might be normal.
forums.mbclub.co.uk
I know normally when people's cars aren't getting up to temp, the first place to look is the thermostat being on the way out.
The shift I'm about to explain is relatively minor, and not the 'struggles to get above 65°C' that we often get asked about.
Given that it's freezing outside, I'm clinging to the hope it's that and I don't need to get out and change my thermostat (I have a spare on the shelf, so getting the part isn't an issue).
Normally, the car warms up as expected, and sits at a rock solid 88/89°C once warmed.
However, last night, I needed to take a 1 hour trip, and it took a long time to get up to temperature.
It was late and I was in no rush, so it was a 56mph economy cruise, nearly all motorway, enjoying some music.
I noticed that the temperature only got to about 81-83°C, except for long inclines where it would climb to the expected 88/89°. After levelling out or on decent, it would fall back to 81-83°C.
Fuel economy took an expected hit, and I was only able to hit an average of 53mpg (believe me, I can usually get much more than this on a similar trip).
My first thought was thermostat likely on the way out. But it was -4°C, hitting -6°C in places.
Is this just a freezing temperature related issue, or do we think thermostat?
I've never driven the car for prolonged, easy cruise periods in such cold weather before.
Heat into the cabin wasn't affected, nor did it have an impact on the water temperature e.g. if I put fans on full blast full heat (with the window cracked because it was boiling), it didn't drop the temperature noticeably.
Note: on the '63 engine, PCS suggest some fluctuation might be normal.
C63 W204: Water temp fluctuating | AMG Lounge
Hey all looking for advice here, I've noticing that my water temperature is fluctuating and are wondering if this is common or something I should have looked at. I am fully aware that engine oil temperature fluctuates between 100-120+ C depending on driving style etc, however the water is not...
forums.mbclub.co.uk
