Hi Group. I have an '87 300D (W124 300DT) Turbo. It has a couple of
issues I thought you might have some advice on.
1) It runs really hot, although the thermostat and coolant sensor
have been replaced. The temp guage gets up to about 1/8" below the
red line often but it will go down briefly when the car drives or the
engine is revved, but it climbs right back up to "scary" zone soon.
It's kind of unpredictable, except definitely it gets up to that hot
zone while idling or going up a even a small hill. The radiator looks
shiny/newish (looks like 1 year old or so) as do the hoses. I drove
it about 120 miles and although it stayed up in that high neighborhood
of the guage, it did not overheat. Should I ignore it? Should I
flush the radiator, buy a new one, or replace the water pump or
something else next?
2) Everything in the circuit (at least listed on the fuse box as "in
the circuit") for the windshield wipers does not work. The windshield
wipers, headlight wipers, windows, comfort, etc., all do not work.
What is most likely to be causing that?
3) I am getting a buzz/hum from the right front wheel, that increases
with speed..I can hear it from 5 mph and upward. It sounds more like
a something rubbing than a wheel bearing rumble, although maybe that's
how it sounds in these cars. What do you think it is?
Any help would be appreciated!