What are the symptoms of the regulator going bad? I know the later 210's didn't have this problem but where is the cutoff?

__________________

Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K

I believe the symptoms are the blower only running at low and high speeds, nowhere in between.

My best guess...

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Mine will run (when set) at high speed then over the course of a minute or so, slow down to just a trickle of air, then sometimes just stop. If left on high, it eventually comes back on, at high speed. I'm baffled.

__________________

Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K

I think mine has done that too but not for long before returning to normal.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Hi-
Not sure if your chassis is the same as a w123 but I solved all my blower issues by doing the following:
A: Replace brushes on motor (easy to pry end off motor and replace brushes)
B: Replaced motor speed control relay w/ used one from Pick-n-Pull (located behind glove box- above where motor is just under dash pad- it's a silver box- one of two)
C: Replaced temperature control module w/ used one from Pick-n-Pull (located next to other box- the 2nd box of two)
I did replace my climate control module (on dash w/ temp. selector & all the various buttons) before doing the above work but it didn't help at all. After more research I found that it's uncommon for these to fail.
Your chassis should have some, if not all, of these blower motor components.
Hope that helps somewhat.
Cheers!
-Chris

Climite control type system, W210 1996. I can adjust the fan speed all the way up and down, and shut it off. I have no control over where it vents from. The display shows where, but I can not change it's setting. I can also not change temp, it only reads LO.
Toughts??
I already had a friend tell me to only drive it when its hot out, don't drive it when it's cold out and the LO temp. won't bother me. He is a very funny guy.

Have you run the onboard diagnostics? There are codes for communication loss.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

If the blower resistor goes bad, the fan will run at a very low speed. If your car is an earlier model W210, the resistor is no longer available. You'll either have to

1) Adapt a W140 regulator (which looks somewhat similar to the small square w210 regulator.
2) Buy the larger new regulator, wiring harness adapter kit and a blower motor from a 2000+ W210.

I did the later, it cost me about $250 in parts.

__________________
With best regards

Al

Tell me more. I have no idea what to do. It seems like I CAN control the fan speed from off/slow and progressively up to fast. I have no control over anything else. it blows thru all vents now I think, and the indicator points up, center, and down.

if you can't change temp on the lcd panel, the control unit itself is bad. i don't know if the control unit can be repaired somehow.

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1984 300TD "MAX" 303K+ still going...
fast '70 Chevelle 200k+
home built Shovelhead chopper

Is there anyway to determine if we are getting enough airflow? On hot days it takes a very long time (to quote my wife...FOREVER) to get the cabin cooled down on a hot day.

The air coming out the vents is COLD, but at a very low volume. If it were blowing in your face, your hair wouldnt be blown back (assuming you have hair, LOL).

Thoughts?

(Looking forward to checking out Muleears W210 in the next few days).

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83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.

That would be the blower regulator going out.

__________________
With best regards

Al

http://www.continentalimports.com/ser_ic40142.html

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)