W123

1985 MB 300D 123 Chassis Diesel. Dead Water temp guage looking for water temp sender ? I see three place for Senders for water temp guage #1 on the Engine block (drivers side) #2 on Water housing (passenger side) #3 On water housing (on front of engine) 1) Which sender feeds the instrument temp guage? 2) Can I check to see if the problem is guage or sender by grounding the wire goiing to the sender ? (will the needle on the guage move?)

the battery died on my 300d. I had my father-in-law pull my 300d home with my F250 (with tow-strap) about 7 miles. I put the 300D in neutral (AT) and about 1/3 the way there, the speedo cable broke. I finally got it running and now the auto tranny seems to be slipping a little bit from going 1st to 2nd, and from 2nd to 3rd. Any thoughts/suggestions? I'm ordering an "Early Auto Tranny service kit (1)" from you guys anyways. Any advice on the speedo cable? I'm using my GPS for now to tell me how fast I'm going. Thanks!

I have a 1980 123 300D non turbo, shut down was acting slightly slow after testing nothing appears to be leaking and pump is producing a strong 23psi, upon testing fuel shutoff valve it shut off under two pumps from mitivac, after testing and re-connecting shut down is excellent but lines are coated with oil. so 2 questions here: 1) is there any way to clean out the hard lines without completely replacing and only replacing the rubber connectors?

I was driving to go skiing in my 1985 300TD wagon. The car, as always, ran like a champ. When I got to the road to the ski resort at 6,000 feet, the car lost power. You could stand on the accelerator and hear a whining noise from the turbo, but the car would barely go. When we left, as soon as I got below 6,000 feet again the car ran like a champ. The next morning we drove to the resort again, same thing. What would cause this and how can I fix it? Bill Brewer Tehachapi, California