Please Help my 300CE overheating
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Junior Member
Joined: Apr 2010
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1993 300CE CONVERTIBLE, 1999 S500
Please Help my 300CE overheating
I have a 1993 300CE, the car has 46k miles. It has been overheating and I do not know why. Plus here in CALIFORNIA you have to have your system working right since it gets hot here.
I have all these parts that I put are Brand New
Radiator-Brand New
Water Pump-Brand New
Clutch-Brand New
Fan Blade-Brand New
Hoses-Brand New
Thermostat-Brand New(Have Tried using the 79C and 87C and still no luck)
DOES ANYONE KNOW THE ANSWER? ITS DRIVING ME CRAZY BECAUSE SOON ENOUGH IM GOING TO OVERHEAT MY ENGINE
I have all these parts that I put are Brand New
Radiator-Brand New
Water Pump-Brand New
Clutch-Brand New
Fan Blade-Brand New
Hoses-Brand New
Thermostat-Brand New(Have Tried using the 79C and 87C and still no luck)
DOES ANYONE KNOW THE ANSWER? ITS DRIVING ME CRAZY BECAUSE SOON ENOUGH IM GOING TO OVERHEAT MY ENGINE
Member
Joined: May 2009
Posts: 176
Likes: 2
From: So. Cal.
97R129-01W163-94E320-93500E
Looks like you've replaced all parts related to the cooling system except for the coolant temperature sensor and the refrigerant pressure sensor. Replace these two sensors (or have them properly checked). If it still overheats, have your cooling system pressure tested and your engine compression tested.
If all cooling systems components are working properly and it still overheats...you may have a blown head gasket.
If all cooling systems components are working properly and it still overheats...you may have a blown head gasket.
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Joined: Aug 2008
Posts: 149
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From: Sacramento
16 E350 wagon, 94 AMG, sold -95 E320 Sportline wagon & 94 E420 & 95 E320 coupe & 92 190 16v
Did you check the two relays that kick on the fan? They almost killed my coupe until I replaced one and all was fine.
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 70
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1993 300CE CONVERTIBLE, 1999 S500
Looks like you've replaced all parts related to the cooling system except for the coolant temperature sensor and the refrigerant pressure sensor. Replace these two sensors (or have them properly checked). If it still overheats, have your cooling system pressure tested and your engine compression tested.
If all cooling systems components are working properly and it still overheats...you may have a blown head gasket.
If all cooling systems components are working properly and it still overheats...you may have a blown head gasket.
oh crap, I think my head gasket is leaking
Woke up in the morning, there's a puddle of oil underneath my car.
I cant believe it, the car has only 46k miles
thanks so much for your help
Junior Member
Joined: Aug 2009
Posts: 16
Likes: 0
mercedes 260e
sorry to hear that you have a head gasket problem with your mercedes.
after having replaced with a brand new radiator, water pump etc, i would suggest checking the car's fan coupling....this is done by trying to spin the fan...
if it is very easy to spin the fan...the fan's coupling needs to be replace......because normally there should be some resistance....
your mechanic should have check this coupling when replacing the radiator etc...
after having replaced with a brand new radiator, water pump etc, i would suggest checking the car's fan coupling....this is done by trying to spin the fan...
if it is very easy to spin the fan...the fan's coupling needs to be replace......because normally there should be some resistance....
your mechanic should have check this coupling when replacing the radiator etc...
Member
Joined: Mar 2008
Posts: 201
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1992 Mercedes-Benz 500E
Could have calcium scale build up on the motor. MB makes a acid you mix with water to flush that stuff out. It can coat all the alum surfaces over time from using tap water and not allow proper heat transfer to the coolant. Also don't be surprised about the head gasket, its probably original and not the updated kind, they use to only last 30-40k.
You can always just run the heat full blast to avoid a overheating situation in a pinch.
-Mike
You can always just run the heat full blast to avoid a overheating situation in a pinch.
-Mike
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 70
Likes: 0
1993 300CE CONVERTIBLE, 1999 S500
sorry to hear that you have a head gasket problem with your mercedes.
after having replaced with a brand new radiator, water pump etc, i would suggest checking the car's fan coupling....this is done by trying to spin the fan...
if it is very easy to spin the fan...the fan's coupling needs to be replace......because normally there should be some resistance....
your mechanic should have check this coupling when replacing the radiator etc...
after having replaced with a brand new radiator, water pump etc, i would suggest checking the car's fan coupling....this is done by trying to spin the fan...
if it is very easy to spin the fan...the fan's coupling needs to be replace......because normally there should be some resistance....
your mechanic should have check this coupling when replacing the radiator etc...
If you mean that then the clutch fan is brand new
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Thread Starter
Junior Member
Joined: Apr 2010
Posts: 70
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1993 300CE CONVERTIBLE, 1999 S500
Could have calcium scale build up on the motor. MB makes a acid you mix with water to flush that stuff out. It can coat all the alum surfaces over time from using tap water and not allow proper heat transfer to the coolant. Also don't be surprised about the head gasket, its probably original and not the updated kind, they use to only last 30-40k.
You can always just run the heat full blast to avoid a overheating situation in a pinch.
-Mike
You can always just run the heat full blast to avoid a overheating situation in a pinch.
-Mike
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Member
Joined: May 2009
Posts: 176
Likes: 2
From: So. Cal.
97R129-01W163-94E320-93500E
Good luck!
Thread Starter
Junior Member
Joined: Apr 2010
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1993 300CE CONVERTIBLE, 1999 S500
Yeah I know, the head gaskets are cheap, it is the labor that kills it.
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Joined: Mar 2008
Posts: 201
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1992 Mercedes-Benz 500E
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Joined: Mar 2008
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1992 Mercedes-Benz 500E
