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Car running hotter then usual
sounds like wrong temperature range thermostat , or new defect , i only use stant thermostat , also double check coolant level , almost always air traps after coolant service
on Oct 07, 2012
I have an 1985 mercedes benz 300D. In the winter,
Hi thanks for asking. The thermostat is doing its job because it is supposed to open at 80c or 176f. If you are not in an extremely cold climate where the engine simply cannot maintain enough heat, then there is most likely going to be a low coolant situation or even a clogged heater core. If the temperature fluctuate wildly, though.. then you should look into the water pump drive system.
Let me know if you need anything else.twitter.com/acoates23234
on Jul 10, 2011
I have a 1985 mercedes
I just happend to have a similar problem with my 84 300td. I thought that I needed the solenoid as well, however, one of the vacuum hoses was torn. The solenoid can be found next to the injection unit and has several rods connected to it. It also has 2 vacuum hoses connected to the solenoid. I am not sure if your 85 is the same , but I believe it is. If you have the 2 hoses, check for vacuum at the hoses. The hoses run inside the car to the ignition switch as well. You can verify your solenoid is good or bad by applying vacuum using a vacuum pump to the solenoid. If the solenoid is ok the engine should cut off, if not I would suspect it faulty. Double check and make sure the linkage is lubricated, sometimes it dries out and can stick. The solenoid should also have a part number on the side. It is also referred to as a vacuum control shut-off valve.
on Jun 25, 2011
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