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Old 06-04-2002, 04:15 PM
-fad -fad is offline
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Join Date: Oct 1999
Posts: 1,562
...sounds like its time to do a complete cooling system check-up which will include but not be limited to (its imperative for a 500e cooling system to be at 100% effectiveness):

review for:
>fresh OEM MB coolant in the correct % to distilled H20 (check service records, needs to be done every 2 years), correct coolant level, no coolant leaks
>review thermostat
>review correct cut- in of low, med, and high speed Aux Fans (resistor/ fuses may need replacement)
>review correct function of clutch fan

also helps to review cleanliness of the air filter(s)- you have 2 of them....if they're dirty and clogged- - it won't help matters starving the motor for air

>in a healthy 500e, the low speed fan will be on w/ a/c on...
do a search to find the info on med and high fan temp cut in's

>>>JimF's cooling piggy tail is great "insurance" and appears to be an effective "add-on modification" when mated to a healthy and 100% effective 500e cooling system (not a great answer when mated to an ailing system)....<<<mated to an ineffective system, you'll probably just burn up your fans prematurely as they'll be on 100% of the time

good luck and let is know how it turns out!

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