If i put in a little too much freon in will that cause the high side to get hot enough to switch on the fan or is it just that hot out? I'm working on two MBZs, the 280 SEL and a 240D. Hard part is the cheap 134A kits don't have the right fitting for the high side. The 240 is just not that cold of air coming out of the vents. I just had to add a touch of freon the the 280 SEL(Euro).

Any ideas?

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1984 280SEL, 62,000 miles
Euro model in the USA
1983 300D (Totaled out 10/2004)
New Factory Mint Green paint
Palomino int
1982 240D (Steak dinner for two)