300sdl climate control / whats the best course of action? - Page 2 - PeachParts Mercedes-Benz Forum

Brian Carlton · #16 08-05-2006, 08:54 PM

Quote:

Originally Posted by Hit Man X

Is there a way to test the servo (minus the ohms per the GDL site) to see if it's pulling too much amperage?

I have three servos that SEEM to work... solenoid "clicks" and motor spins both ways. But is that a sign the unit still works?

Don't know that.

I've got the same thing.......two servos that work.......and two amps.......one resoldered........that won't do a damn thing.........

Hit Man X · #17 08-05-2006, 08:56 PM

HA, I have resoldered two amps with no go.

Wasted four hours. I have a box of used amps at my house.

I'm not wondering if the servo is the issue with my SDL not the amplifier.

Brian Carlton · #18 08-05-2006, 08:57 PM

Quote:

Originally Posted by Hit Man X

I'm not wondering if the servo is the issue with my SDL not the amplifier.

I am.

#19 08-05-2006, 08:58 PM

Quote:

Originally Posted by Brian Carlton

The cruise is always one of two things: The amplifier or the servo. I've been struggling with the cruise on the '86 forever. I'm going to toss in the towel and get a rebuilt amp from GDL. I'll probably send them the servo as well to test with the amp. A servo that draws too much current takes out the amp........and they don't guarantee the unit against this type of failure.

The GDL site has a pretty good test procedure for the servo, including measuring the current draw. I tested mine in about 10 minutes. One of these days I need to get an amp for the 240D, my wife never uses the cruise, but it drives me nuts.

Hit Man X · #20 08-05-2006, 08:59 PM

GDL does accept the parts for cores, so I should have most of a good servo from them already. But I need to isolate my coolant loss before that.

a2t · #21 08-05-2006, 09:12 PM

Yes - you can hook in an amp meter to the motor and read the amps req'd to move motor fwd and back.

There used to be procedure for this on GDL website. I think if it draws over certain amperage its bad.

Hatterasguy · #22 08-05-2006, 10:13 PM

Quote:

Originally Posted by a2t

What you are calling the CCU is actually an ACC (auto climate control) just so you are on same page when talkin 2 vendors.

I spoke with an outfit in Cali called gdl online and they are very knowledgeable on ACC and cruise brains. He told me the ACC on that model is not repairable, and the reman units sold on just about every site are suspect. This because, according to gDL, the unit is non-repairable. If you take it apart, you will see what he means, there is no way to access the circuit board without destroying the unit.

I think new ACC's were in the 300-400 range on the net, around $800 dealer.

I dont know if theres a significant difference between the new ones sold on net, and new ones at dealer.

as for rest of your issues, sounds like you are doing it right...as you should be. The 86 SDL is an AWESOME vehicle, once the 80's electronics are in order it will run quite well.

Does the cruise work?

Yep I am enjoying my rebuilt push button unit. Cost a bundle(don't remember $300-$400) but it sure is nice when it works.

Hit Man X · #23 08-05-2006, 11:35 PM

Quote:

Originally Posted by a2t

Yes - you can hook in an amp meter to the motor and read the amps req'd to move motor fwd and back.

There used to be procedure for this on GDL website. I think if it draws over certain amperage its bad.

Where could I get the amp meter to do this?

#24 08-05-2006, 11:54 PM

Quote:

Originally Posted by Hit Man X

Where could I get the amp meter to do this?

As I recall it draws a pretty low current, I just used a cheap analog multi-meter that I've had forever. You should be able to find one cheap someplace.

Deezel · #25 08-12-2006, 08:52 AM

Is there a part number for a brand of compressor that will work on the 300sdl that someone out there has sucessfully installed on thier car?

Did i read somewhere that a GM compressor will work on this car ....or was i just dreaming?

I guess what i want is the same thing alot of people want....
the best bang for the buck

Hit Man X · #26 08-12-2006, 07:02 PM

Quote:

Originally Posted by Deezel

Is there a part number for a brand of compressor that will work on the 300sdl that someone out there has sucessfully installed on thier car?

Did i read somewhere that a GM compressor will work on this car ....or was i just dreaming?

I guess what i want is the same thing alot of people want....
the best bang for the buck

The R4 is for the v-belt cars.

From my searching, some 300E/SE/SEL compressors will work on the SDL.

Hatterasguy · #27 08-12-2006, 07:41 PM

The 420SEL uses the same one, you just need to switch the clutch.

peragro · #28 08-13-2006, 01:52 AM

I got a rebuilt push button unit from the benz store. Cost about $150, has a 3 year warranty and has worked fine for the last few months. Looks much nicer than the old one too.

try this page or give the guy a call.

Hit Man X · #29 08-13-2006, 02:46 AM

Not a bad deal at all.

peragro · #30 08-13-2006, 02:55 AM

Quote:

Originally Posted by Hit Man X

Not a bad deal at all.

I'm pretty pleased with it. I didn't realize with the old unit that the fan speed was supposed to gradually increase to whatever if felt in needed when on auto. The new one does that - it's cool. Still have to fix the problem in the ignition switch though. It stays turned too far CW so the blower doesn't work. I have to turn it back CCW a smidge to get the fan. Not really that big a deal, I'll fix it when it's cooler.