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#16
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Quote:
I'm guessing air pockets were settling in the engine at idle causing the temp to rise. We will see over the next few days.
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2009 ML320 Bluetec 1985 300CD 1981 300TD Past Mercedes 1979 300TD 1982 300TD 2000 E320 4Matic Wagon 1998 E430 1984 300SD 1980 300SD |
#17
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Well the good news is the adding coolant fixed the issue but the bad news is I found out WHY the engine was low on coolant.....the servo is leaking at the bottom. The servo/climate control systems works exactly as it should and considering I don't drive this car in the winter I'm weighing my options. Once I park it for the winter I'll probably do the bypass (with a vacuum valve I have from a later model at the pnp) leaving the servo in place. I guess the only issue with that would be the temp switch causing the blower to come on when heat is called for. I'll start another thread when I get around to this.
The car has the ALUMINUM servo as well which they claim is better and does not crack like the plastic.
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2009 ML320 Bluetec 1985 300CD 1981 300TD Past Mercedes 1979 300TD 1982 300TD 2000 E320 4Matic Wagon 1998 E430 1984 300SD 1980 300SD |
#18
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I have a good working plastic servo if you want it.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#19
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[gloating mode OFF] |
#20
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Yes, you were correct. I acknowledged your statement as a possibility but I wasn't quite sure how to verify the level since I've never dealt with one without an expansion tank before.
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2009 ML320 Bluetec 1985 300CD 1981 300TD Past Mercedes 1979 300TD 1982 300TD 2000 E320 4Matic Wagon 1998 E430 1984 300SD 1980 300SD |
#21
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Hey V-tech,
How much you want for the servo? I REALLY don't want to bypass for heat, but this winter is going to be a doosey. I would rather just replace the servo. Let me know, Ginny
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Ginny in Denver-ish 78 300SD, 265K (mine) |
#22
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Quote:
Ultimately, the cooling system was low on coolant but I didn't realize it because the overflow tank remained at proper levels. Wasn't augmenting the cooling system due to a blockage in the hose from the overflow tank to the radiator fill. I was sure the electric fans weren't working properly as it would only heat up when running real slowly and would operate normally when crusing along at 30+ mph. Verified the fans were working as designed and was at a loss. Accidently discovered that reving the motor to 2,000 rpm's while not moving would also cool the system down. I guess the antifreeze wouldn't circulate properly at the low level when the waterpump was spinning at a slower speed?
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You can't always get what you want, but if you try sometime you just might find you get what you need. |
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