PeachParts Mercedes-Benz Forum - Where does your M103 engine temperature run at?

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Quote:

Originally Posted by pawoSD (Post 2207014)

Does it have the original radiator? It might be plugged up and not getting good enough air flow.....I had that problem on my diesel. My temps dropped 10-15C under hot-day-load driving by simply installing a new radiator....it wasn't internally plugged, but the fins were filthy and blocking air flow.

No its 3 years old, but an aftermarket. Maybe its just poor quality?

Quote:

Originally Posted by ps2cho (Post 2207016)

No its 3 years old, but an aftermarket. Maybe its just poor quality?

What brand of aftermarket? I have a Nissens replacement on my car and it seems to work very well.....

my m103 used to run around 80C constantly, but due to a crack in my original coolant tank, I was forced to replace it today and did an entire drain/refill of the system along with a new 87C thermostat

now it seems to run at 87C only when I am driving 70mph on the freeway night or day. When I am cruising in the city, it starts creeping around 95C to 100C. :(

Quote:

Originally Posted by Arthur Dalton (Post 2206885)

Ivan

Many guys that are in those extreme climates use the low fan sensor on the drier to trigger a simple relay to feed back to the R15 ,which gets you High fan vs. low when the a/c calls for Low aux fan...makes for better a/c output @ High thermal Load/Ambients and will also work with the cabin sw. over-ride.

What sensor is this and do they have them for a 300TE

Quote:

Originally Posted by RBYCC (Post 2207005)

My M103-12V twin turbo runs 85-90 with the aux fans turning on at 92 by means of a resistor modification.

I have heard about this, how is this done? and does it do the same thing as the low fan sensor mentioned above?

Quote:

Originally Posted by pawoSD (Post 2207014)

If your radiator was not plugged internally and the fins were just dirty couldn't you just clean the radiator and it would be fine?

I had read about a fan clutch for the M103 that is used in hot (extreme) climates, Does anyone know about this? or have the parts number.

Quote:

Originally Posted by John5788 (Post 2218523)

It's also summer now, so you're probably running your A/C AND there are two thermostats for the M103.

Quote:

Originally Posted by Hit Man X (Post 2218723)

It's also summer now, so you're probably running your A/C AND there are two thermostats for the M103.

its been cold here in socal lately, june gloom. outside temps probably only about 20C average this week.

I wouldn't consider nearly 70°F cold.

You have the hotter thermo is the car, it doesn't begin to open until 87°C There are going to be tolerances between parts, system may not be burped, etc.

I don't consider 100°C too hot for the car.