S-Class (W126) 1979-1991: 300 SE, 300 SEL, 380 SE, 380 SEL, 420 SEL, 500 SEL, 560 SEL, 360 SEC, 500 SEC, 580 SEC, 300 SD TURBODIESEL, 300 SDL TURBO, 350 SD TURBO, 350 SDL TURBO

87 560SEC Running Cold

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Old 12-17-2009, 11:08 PM
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87 560SEC and 85 300SD AMG
87 560SEC Running Cold

This car has a bypass thermostat to allow for fast warm-ups. Cold running most likely bad therostat.
Were is it located?
Old 12-28-2009, 07:57 AM
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w126 500sel
better to replace the thermostat on a new, if poorly heated mashina.udalyat it unnecessary
Old 12-28-2009, 11:49 AM
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87 560SEC and 85 300SD AMG
Replaced - $40 part $145 labor $30 Amber Antifreeze!
Was located on side of water pump. Old one was from 1995!

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