Since the hot summer days this year my 92' 2.5 turbo 124 has been running between 90c and 105c. The coolant is due for a change so I will do that and test the t-stat too. A few questions:

Is there a block coolant drain on a 92' 2.5 turbo...where?
Any advice on making sure all air is out of the system?
What is the best flush/fulid to use?

Thanks for any input.

Look under the exhaust manifold on the passenger side of the engine, I believe there is a block drain plug there, correct me if I am wrong.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

Ali,

Thanks for the pointer. I found the drain plug but did not have the strength/tool to perform the task. Drain and flush went well. But did not solve the over heating problem. Although, I found only one aux. fan to be working when the defrost is on. Should both? If so what could be the problem.

Yes, that bolt can get pretty stuck sometimes. I have to use a breaker bar to get it off sometimes.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

Both fans should be running together. One cause is a bad fan; can't help you further than to let you know something's awry...good luck with it

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo