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Old 12-30-2012, 10:42 AM
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540iman 540iman is offline
resident, old fart
Location: N.W. Indiana
 
Join Date: Sep 2008
Posts: 1,504
Mein Auto: 2002 540i sport
If it were your SAP, it would ONLY last about 90 seconds after a cold start-up. That's
it! If it is possible it is your fan clutch (do search about rolled-up newspaper) your fan blades could come up right through your hood, destroy radiator, and more. At least see if you can easily stop fan blade on a cold start-up in morning with just a small amount of rolled-up newspaper. If you can't stop your fan blade easily right upon cold start-up, your fan clutch is NG. Then you'd be driving with time bomb ticking. Do not race over about 3000 rpm if you find fan blade clutch is shot.
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