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  #1  
Old 03-18-2002, 09:41 PM
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Recommendations on cooling system replacement parts?

I need to replace my radiator and my bypass hose on an 1989 300TE. What else would you recommend I replace as long as I'm at it?

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  #2  
Old 03-18-2002, 11:44 PM
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Talking Thermostat!

Good luck!
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  #3  
Old 03-19-2002, 12:24 AM
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Check your expansion tank cap and make sure it is keeping pressure in properly. It's always good to have an extra around anyhow.

What problems are you currently having?

~Paul

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  #4  
Old 03-19-2002, 05:20 AM
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Expansion tank CAP. Or the lid on the coolant reservoir! Only a few bucks, to ensure pressure!
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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #5  
Old 03-19-2002, 07:31 AM
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I would change the water pump out too (new one).
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  #6  
Old 03-19-2002, 10:14 AM
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Make sure the rest of the hoses are in good condition, and use the orange stuff
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  #7  
Old 03-21-2002, 10:00 AM
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What is wrong? The radiator leaks and the bypass hose is cracked. I had the radiator pulled and checked by a reputable shop. The said it could not be repaired and should be replaced.

Thanks for the resonses so far. Any other thoughts?
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  #8  
Old 03-21-2002, 10:05 AM
davek
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Thumbs up coolant system repairs

I'd replace the heater control valve also. I thought I had a heater core leak that turned out to be only the control valve. It's easy to replace and cheap.
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  #9  
Old 03-21-2002, 11:29 AM
realneal
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davek,
Now, there's some good, sensible advice. I'll remember your tip.
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  #10  
Old 03-21-2002, 01:45 PM
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Establish a base-line, and change all hoses including heater hoses, esp. the one from the rear engine-block to the firewall (adjacent to the oil filter).

Change thermostat and use new seals & gaskets. Change the hose between the waterpump & the engine-block. If you purchase the actual factory hose and use a lot of vaseline/silicon, you can change it without doing the waterpump but it is hard!

If you can afford it, change the waterpump.

Reseda Radiator has rebuilt radiators w/warranty and re-inforced necks for $125/exchanged (http://www.resedaradiator.com). I have one in the 1988 wagon and 1993 500E.

Check your viscous fan-clutch, if not working, either replace OR go to an electric fan.

Inspect the serpentine-belt, change out with a Goodyear Gatorback belt (NAPA has them). Check all bearings that use the serpentine-belt. If you haven't had your alternator rebuilt/replaced in over 100K miles, have it rebuilt with new bearings and brushes. Cost me $65.

Check powersteering and self-levelling suspension hoses for leaks. Replace any that are questionnable, much easier with radiator removed.

Clean the condenser out, lots of junk. The fins are easiely bent so be careful if using a high-pressure washer.

If you're coolant recovery tank is dirty, clean it or replace it. Replace the cap and keep the old one as a spare.

If you have any brown oil in the coolant use the MB oil-remover and flush 3x. Then do a MB citric-acid flush, flush 3x.

If you don't get lots of freezing weather/temps, fill up with 60% distilled water; 40% MB anti-freeze (I don't think the ORANGE stuff has a neutral PH); and 1 bottle of RedLine Water-Wetter.

After doing this, and with a 1995 C36 AMG M104 engine, my engine temps never get past 100 even when climbing the desert-hills to Las Vegas at 105-F going 75 MPH.

:-) neil
1988 360TE AMG
1993 500E

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