W123, Electrical

A/C problem with my 1984 300DT

On rare occasions when I turn the A/C on and select high fan speed the blower is very fast (read powerful) and the temperature is very cold......Great! On other occasions in fact most of the time when the A/C temp is selected and the high speed fan switch is selected the fan is slow and the temperature is warm to cool. Yet at other times if I switch off the engine before switching off the A/C for example when refueling and then turn the engine back on the fan blows H-O-T.

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fuel leak related to power loss?

I have been experiencing an occassional power loss for quite some time now. A while back i took care of this problem when i found a loose clamp on the hose going to the hand primer pump. After tightening it and bleeding the system it took care of the problem.
Now i have a small fluid leak that i believe is coming from the bottom of the clear sediment bowl on my FM100. It is too difficult to tighten in its current position, so i have been putting off removing the FM100 filter.
Anyway, my question is this, can a small fuel leak like that be responsible for power loss?

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1985 300sd 30 mph max no power

I just purchased this car. It starts quickly and idles smoothly but has no power and will only go about 30 on flat ground. I removed exhaust pipe with the cat and muffler, thinking the cat was plugged, didnt help. the previous owner said the turbo got hot and caught the underhood insulation on fire but he got it out quickly and with the exception of 2 vacumn lines it didnt hurt anything. turbo area emits a highpressure air sound, not a turbo whistle,at idle and it gets louder under power. Any suggestions? Thanks Tom Postscript 1st benz Ive owned so have to catch up.

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