300E Downshifting for no reason on hwy!!

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300E Downshifting for no reason on hwy!!

07-11-2001, 03:48 PM

Herr Leber Herr Leber is offline

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Join Date: Oct 1999

Location: New York City Burbs

Posts: 177

My brothers 87 300E (gasoline motor) 190,000 miles, started downshfting on the highway for no apparent reason when the AC is on. He just had the auto tranny serviced : fluid change & filter, also just had a brand new AC compressor put in,new serpentine belt, new fan blower (fan only blows on highest setting!)

What the hell is wrong with this thing? I thought the fluid may be the problem. The guy who put the parts in (a moolighting Benz tech) said just to shut the AC off. Whats up?

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Patrick Leber
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)

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