Potter, Tom E wrote:
If the engine temperature is rising when doing 80 mph, the problem is
not the fan. The fan becomes redundant after about 30 mph. Most fan
couplings disengage about 2500 rpm anyway. I would look further into
cooling system problems.
That is NOT true of the viscous fan clutch used in at least some
Mercedes turbodiesels. They DO have some influence on cooling under
heavy loads even at high speeds. They do NOT disengage, but they do NOT
turn at full engine speed (are limited to around 3000-3500 rpm or so).
Marshall
--
Marshall Booth (who doesn't respond to unsigned questions)
"der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 181Kmi,'87 190D 2.5 199Kmi, '84 190D 2.2 227Kmi, '85 190D 2.0
159Kmi, '87 190D 2.5 turbo 234kmi
