Mike Yorkavitz

Hi guys and gals.

Got a 95 sl and wanna kill two birds without flooding the page.

Temperature is running at 90c majority of the time after replacing open thermostat. Used an oem 'stat and zerox 50/50.
Outside Temperature is usually 80f. I replaced the reservoir with an updated one off a 2001 model and it seemed fairly new (plastic was still clear). The original cap neck had a tiny leak so that why I swapped it. The original stat ran 85c in south Florida heat but took a while to warm up. The new one seems to creep to 95-98c sometimes and really takes some driving to bring it down. Is this normal? Will stay at 85 until I start heavy speeds or distance.


As for window adjustment, it seems the windows are over traveling and you can see them push up on the hard and soft top making a creaking noise at the top of the door. It'll make a creaking noise if I flex the window by hand when door is open so I assume something's loose in the motor assembly. The windows are also slightly tilted aft making a tad bit more effort to close. Can I make both height and angle adjustments INSIde the door panal at once? And how so?


Thank you!

Plutoe

When was the last time you had a professional flush your coolant system---if never see one!!

Mike Yorkavitz

Never to my knowledge. It's got 60k on it and previous owners really kept up on it. Original coolant seemed clear and the stat and pump looked brand new on the inside. You think a flush would fix the issue? Will driving at 90 hurt the motor in the long run?

placer

I just finished working on the window in my 1991. I don't know for sure if yours is the same. Take the door panel off (search youtube: there are two good videos). When the panel is off, there are two nuts on either end on top. Drop the window a few inches, loosen these two nuts (which are in slots) and move the nuts up or down until the window closes correctly. A few minutes of trial and error with these two nuts and it should be fine.

Plutoe

Clear has nothing to to do with crap attached to the metal in the system---I am talking about a professional flush not the garden hose HS!!

I know you are old, on a fixed income and broke most fridays--however you can run around at 90 without a problem!!

RADHAMES

Start the car, turn of the AC, wait the temp to rise to operating temp (80c)

Open your hood, if the electric fans haven't started ( with the AC off) your problem is the sensor that put it on operation. It has one for the gauge and one for the fan, is a resistance type, that sends 4 speeds to those fans.

The AC only put 1 low speed.

Mike Yorkavitz

Here's my other problem.
AC low pressure hose blew and am going to have it repaired.
Never had the aux fans kick on but temp has never gone over 98-99c
I have used a couple laser thermometers which show temp is reading well BuT the temp gauge on the dash sticks. I have to repeatedly tap on it to get the needle to move. I will be removing that soon. Previous owner had a light bulb changed and may have screwed it up.

RADHAMES

The fan temp sensor is bad, temp doesn't go high unless you spent a lot of time in city driving at low speed or at traffic.

Fix that first and if the problem persists, which I think will not, check the fan clutch and perform a radiator flush ( you can also do it, it's never a bad idea)

bobterry99

The fans come on high-speed at a coolant temperature of 106C or a refrigerant high-side pressure of 20 bar. On a '95 and earlier car there is a dedicated temperature sensor for the climate control that is independent of what you read on your instrument cluster.

The fans come on low-speed if the outside temperature is 30C or greater and the A/C is running.

Mike Yorkavitz

Then how would I be able to test the aux fan function? As I said, I've never seen the temp hit above 100 before so I assume it wouldn't kick on.
could borrow an ohm meter.
I'm putting the ac on hold until I put new rear suspension/struts, and flex discs on.
Also, fan clutch seems good. Shortly after shutdown, you can turn it pretty easy but will stiffen up a lot the more you turn it. I assume that's a pass grade?

Btw, can I drive the car with the low pressure ac hose removed for repair?

bobterry99

Switch the ignition off, engine off. Put the climate control in Automatic. At the A/C dryer there is a green pressure switch with two leads. Unplug the leads and jumper them with a wire or paperclip -- this simulates high refrigerant pressure and should cause the fans to run.

I tried this on one of my cars, and it did not stiffen. I don't think either of us should be concerned.

Yes, just make sure any openings are covered to prevent debris from entering the system.

Mike Yorkavitz

I tested the aux fans and they work.

I'm worried I didn't bleed air out of the system properly. When I did the thermostat, I just removed the top hose and the thermostat Israel's w/o draining the radiator but I did refill properly and it's been over 6000 miles already. I just fixed my temp gauge as well. Still reads right without knocking on the dash.

Clutch fan works 100% as it should. The car will operate At normal temperatures on highway speeds until I get off and they creep to 90-95 and lingers there. At idle while revving it will go to 100c but revving in in the 1600rpm range with the clutch fan roaring will drop it. Turing the heater on will drop it very quickly as well.

Lee Wireless

My 95 SL500 follows your temperature description to the tee. I've maintained it from new following MB recommendations. Drive it and worry about something else.