My sons new ride, '86 300SDL and some questions. - PeachParts Mercedes-Benz Forum

muleears · #1 11-10-2012, 08:02 AM

Pics are in next post

I should have waited for the frost/dew to disappear, the paint is spectacular. I'm not crazy about the 17's but it rides ok. 194K on working speedo. Started instantly with normal glow at 31* this morning. I has a small amount of rust along the front edge of the sunroof and on the bottom of one of the doors. That is all I can find.

Now to what I need to fix:
1. Slow shut off- shut off valve or other vacuum leak?
2. AC doesn't work- told it was a leaking hose, seller was honest about everything else... we'll see.
3. Mild play in steering- ball joints? Maybe tighten the steering box? No unusual tire wear.
4. Belt tensioner noise- Tensioner and shock already ordered.
5. Runs COLD. 175 mile trip never got to 60* on the gauge. Already ordered a new thermostat.
6. Cruise doesn't work- Probably won't fix
7. RF window won't work- checking switch this morning.
8. All fluids/filters will be done ASAP
9. Needs shocks everywhere.

Any comments on my tentative diagnosis are welcome.

muleears · #2 11-10-2012, 08:07 AM

Lost my pics...

pawoSD · #3 11-10-2012, 08:46 AM

Looks like a nice ride! Those are at least MB-AMG style wheels, if they weren't chome I would like them

gatorblue92 · #4 11-10-2012, 09:01 AM

Those wheels don't look too bad on there IMHO. Nice W126.

muleears · #5 11-10-2012, 09:46 AM

Anybody tell me how to get the window switch out? I've got the wood out with the switch attached, but it's not like my other benz's where I can pop it out. It appears after I remove the plug that there are clips on each end, is this correct? Do I just need a screwdriver to pry them out? It also appears that on this car the "frame" that the switches mount to has been glued to the underside of the wood.

Nice ride Gator!

muleears · #6 11-10-2012, 12:20 PM

I got the window switch out, cleaned and replaced... no luck, window still doesn't work. Fixed the slow shut off- tested the shut off valve and it held 22" vac. Found a split vac hose near the trans modulator fixed that and now it shuts off quickly. Looked through the repair records and found where the head had been replaced due to an overheating incident when the car was only a year old. Unfortunately the replacement was a #14 head... A good day so far though.

Chad300tdt · #7 11-10-2012, 12:23 PM

Test the window motor direct. There could be broken wires in the door hinge area.

muleears · #8 11-10-2012, 02:00 PM

Good idea Chad, I'll try that next.

ChiefRider · #9 11-10-2012, 02:01 PM

Replace the fuse first. The windows are fused in pairs.

TheDon · #10 11-10-2012, 02:35 PM

Quote:

Originally Posted by Chad300tdt

Test the window motor direct. There could be broken wires in the door hinge area.

Yeah, those are a fun failure to diagnose. Window works sometimes but when it doesn't opening and closing the door fixes it. Yep I have the same issue, just haven't had the time to tear into it yet.

ImBroke · #11 11-11-2012, 04:03 PM

Cal, I might have a set of gears.. I had an extra set. Gotta find them. An open theromstat would definitely cause it to run cold. Can't wait to see it.