Climate Control - PeachParts Mercedes-Benz Forum

cmac2012 · #1 11-20-2017, 03:29 PM

Holy crap, I'm sure someone thought it was a great idea but damn, I would love to have a simple heat lever and fan switch. Something is funky with my SDL. Heat is inconsistent. Tends to go away at freeway speeds.

Diseasel300 · #2 11-20-2017, 03:43 PM

Time for a new monovalve cartridge. OEM only please, forget wasting your money on the MTC or generic ones.

funola · #3 11-20-2017, 04:16 PM

This https://www.amazon.com/dp/B00SAFM5U0/ref=asc_df_B00SAFM5U05275048/?tag=hyprod-20&creative=395033&creativeASIN=B00SAFM5U0&linkCode=df0&hvadid=167120909983&hvpos=1o2&hvnetw=g&hvrand=17211596150193206192&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9004382&hvtargid=pla-315946828028 would work as a monovalve replacement. If you can control the ball valve opening size (not sure if possible), you can control temperature. If not, heat is on or off.

sixto · #4 11-20-2017, 04:18 PM

Is there a Bluetooth option?

Sixto
98 E320s sedan and wagon

cmac2012 · #5 11-21-2017, 07:37 PM

Quote:

Originally Posted by Diseasel300

Time for a new monovalve cartridge. OEM only please, forget wasting your money on the MTC or generic ones.

He who shall not be named apparently has a video on how to change out the guts of that unit for a less painful price. I'm on the road, only with my iPhone, I'll look into it later.

Diseasel300 · #6 11-21-2017, 07:42 PM

The monovalve cartridge is under $40 for an OEM replacement. The monovalve unit itself is several hundred bucks. If $40 is a "painful" price, don't dare look at the cost of a new radiator...

rocky raccoon · #7 11-21-2017, 09:48 PM

Quote:

Originally Posted by Diseasel300

The monovalve cartridge is under $40 for an OEM replacement. The monovalve unit itself is several hundred bucks. If $40 is a "painful" price, don't dare look at the cost of a new radiator...

Actually, I installed a new radiator in my W123. Nissens, a radiator superior to the OE with reinforced necks. Cost about $140 as I recall. Nissens is a Danish company.

Diseasel300 · #8 11-21-2017, 09:49 PM

Quote:

Originally Posted by rocky raccoon

Actually, I installed a new radiator in my W123. Nissens, a radiator superior to the OE with reinforced necks. Cost about $140 as I recall. Nissens is a Danish company.

Radiators for the SDL's have been NLA for several years. Finding a used one is relatively expensive, the only other option is a custom made one or getting creative with bodging something else in there.

cmac2012 · #9 11-26-2017, 01:41 AM

Quote:

Originally Posted by Diseasel300

The monovalve cartridge is under $40 for an OEM replacement. The monovalve unit itself is several hundred bucks. If $40 is a "painful" price, don't dare look at the cost of a new radiator...

No, I meant the $40 is less painful that buying the entire control valve which is about $330.

$40 is a good price. If I get away with a fix for that price, oh hell yes.

cmac2012 · #10 11-26-2017, 01:42 AM

Quote:

Originally Posted by Diseasel300

Radiators for the SDL's have been NLA for several years. Finding a used one is relatively expensive, the only other option is a custom made one or getting creative with bodging something else in there.

Has anyone ever seen an SDL at a boneyard? Not I. Quite a few SELs, but I'm guessing the radiator is different.

t walgamuth · #11 11-26-2017, 05:10 AM

Are you certain you don't have air in your cooling system? That can cause sporadic heat from the heater.

cmac2012 · #12 11-29-2017, 05:12 AM

Quote:

Originally Posted by t walgamuth

Are you certain you don't have air in your cooling system? That can cause sporadic heat from the heater.

Hey, good tip. If you are correct, I will place 18 giggleschnarps of extragalactic energy units into your account.

I might add, I had to bleed the BMW coolant system after draining and refilling. Probably a similar bleed screw on this one. There's a lot I don't know about this car.