[W126 Coupe] FYI Driving in HOT temperatures

Mike R. mramay at att.biz
Fri May 27 19:50:08 EDT 2005


FYI, I've improved my SEC drivability in HOT temperatures. I have an '87
560SEC and an '87 560SEL, both near 200,000 miles. Both cars used to get
pretty high engine temperatures driving slowly in 100+ degree heat. The SEC
just got a new Sachs engine fan clutch (at the recommendation of Bob
Cavazos) and it's made a rather large improvement. Where the SEL would be
running between 110 and 120 degrees C, indicated, the SEC now doesn't get
much above 100 C.  I was driving this afternoon (Las Vegas, 101 F ambient)
on a freeway at 10 - 25 mph and the dash temperature gauge read 109 Degrees
F due to the hot asphalt but the engine was reading about 95 C. It finally
rose to about 105 C but cooled back down once we got back to speed. No
changes to the radiator or coolant. I did paint the fan blade while it was
out - maybe that's the cause for the improvement!!

 

I'll be ordering a new fan clutch for the SEL next payday. Another FYI, if
you don't take the time to clean and paint the fan blade, the clutch
replacement is a total of eight 10mm bolts and should take maybe fifteen
minutes.

 

Y'all stay cool,

Mike R.

 

 

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