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Old 03-10-2001, 10:06 PM
Rick S
Posts: n/a
We recently bought a 1987 300e, no records, showing 133k. I noticed that the overflow tank does not fill up as the car heats up, and there is no pressure in it when the car is hot. Additionally, the hose to the pump below the tank jerks approximately once each four seconds. Finally, the radiator top is hot on the drivers side but virtually cool on the passenger side. Coolant is green. Any thoughts? Thanks, Bob.
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Old 03-11-2001, 10:51 AM
CJ CJ is offline
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Join Date: Jun 2000
Location: Earth
Posts: 1,318
I would start with the basics. Flush out the green coolant and replace the thermostat. When refilling the coolant, use the MBZ coolant or MBZ approved coolant. You may have an air bubble in the system since it is low. Do you have any other problems cuurently with the car, (smoke, hard starts, no heat, sweet burning smell, high temperature or very low temperature etc..)?
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Old 03-11-2001, 11:14 PM
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Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Your radiator is not circulating properly. Get this checked ASAP. Do as advised above. What is your temp gauge telling you. It otta be on the high side. If so, don't wait, you are flirting with a blown head gasket.
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.
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Old 03-12-2001, 08:56 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Be sure to install a new factory Radiator tank cap first@!

I have seen hundreds fail. The small check valve will fail and allow the system to vent instead of building pressure.
Donnie Drummonds
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