Thread: Diagnosing a faulty viscous cooling fan clutch
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Old 01-29-2009, 01:23 PM
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JimF JimF is offline
'94 S500: only 793 sold!
  
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
An MB should warmup within 5mins or so (@ cold ambient temps) so the tstat is bad . . . probably stuck partially open . . as mine was. Had the same symptoms as yours.

It's not GOOD to run the car at low engine temps (50-60C). Shouldn't wait for spring to replace the tstat IMO.
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'94 S500 Cpe

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