w210 e55 need cooling system HELP
11-12-2016, 06:52 AM
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w210 e55
w210 e55 need cooling system HELP
Hi, i'm new to the forum.... and need some help, have a really weird cooling system problem.
I have a '99 E55, that i have been fixing over the last year.... various things. The last thing that I was working on was a radiator replacement, due to a leak.
So, I drained the system (via radiator drain), replaced the radiator, now I have a problem.... I cant get it to refill properly? Specifically I put everything back together, and filled the reservoir with fluid, turned on the car and waited for it to get hot open up the thermo so i can add more fluid and top it off..... never happened. I can't get flow thorough the radiator, and the car gets hot. Never experienced anything like this before.... It does not seem like the fluid is being pumped at all..... I can get about 1 gal of coolant into the system, but i cant get the thermo to open and fill the rest of the system.....
Before i replaced the radiator there were no cooling issues (aside from the leak) .... never overheated, etc.... now this.
Is there anything weird and different about this car that i am unaware of when it comes to coolant replacement, do yo have to bleed it or something.... the M113 has both hose connections on the bottom of the radiator (which is odd) does this have anything to do with it?
Please help if you know anything.
Thanks.
I have a '99 E55, that i have been fixing over the last year.... various things. The last thing that I was working on was a radiator replacement, due to a leak.
So, I drained the system (via radiator drain), replaced the radiator, now I have a problem.... I cant get it to refill properly? Specifically I put everything back together, and filled the reservoir with fluid, turned on the car and waited for it to get hot open up the thermo so i can add more fluid and top it off..... never happened. I can't get flow thorough the radiator, and the car gets hot. Never experienced anything like this before.... It does not seem like the fluid is being pumped at all..... I can get about 1 gal of coolant into the system, but i cant get the thermo to open and fill the rest of the system.....
Before i replaced the radiator there were no cooling issues (aside from the leak) .... never overheated, etc.... now this.
Is there anything weird and different about this car that i am unaware of when it comes to coolant replacement, do yo have to bleed it or something.... the M113 has both hose connections on the bottom of the radiator (which is odd) does this have anything to do with it?
Please help if you know anything.
Thanks.
11-12-2016, 02:39 PM
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1922 Ford Model T / no OBD
MB is using thermostat on return pipe, so it i a bit tricky, but it has to open when engine gets hot no matter what.
I see 2 possible faults
1. thermostat is broken and stays closed.
2. the water pump impeller broke, what was known problem in the era of plastic impellers.
I had it happen on my diesel and was able to confirm broken impeller via thermostat hole.
I see 2 possible faults
1. thermostat is broken and stays closed.
2. the water pump impeller broke, what was known problem in the era of plastic impellers.
I had it happen on my diesel and was able to confirm broken impeller via thermostat hole.
11-12-2016, 04:56 PM
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'99 and '05 E55 AMG
The W210 E55 has the air bleed that connects the upper part of the radiator and the upper hose to the coolant reservoir (look for the "T" junction in the narrow diameter lines); I just replaced all hoses and coolant and had no issues with refilling. FWIW, I refilled mine and then, after one day, added an additional quart of coolant.
I'm with Kajtek on this; at this point I would replace the water pump, the thermostat, and verify the fan clutch is functioning properly.
I'm with Kajtek on this; at this point I would replace the water pump, the thermostat, and verify the fan clutch is functioning properly.
11-12-2016, 05:12 PM
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Yes - do a search - in both the W210 forum and the W210-AMG forum as well.
There is a large amount of air that can be trapped in then system that you need to vent out
There is a large amount of air that can be trapped in then system that you need to vent out
11-12-2016, 05:12 PM
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