Early W210 Blower or Regulator questions
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Newbie
Joined: Nov 2007
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1998 e300
Early W210 Blower or Regulator questions
Group,
I read the great post by Tony on the regulator replacement and pulled out the blower tonight. I suspect my problem lies with the regulator but wanted to check if my troubleshooting is correct.
Last week my AC started blowing warm, but with the same force as always. A quick $100 trip to a local shop and a recharge and it blows cold again, but now does not blow on high (some changes with the lower settings, but no high speed function). As I had all the parts out I carefully turned on the unit again and the fan had a slight squeal and spun up, but then started to slow down to a stop.
I am not sure if this is a typical symptom of the regulator or blower motor, any thoughts? I also read the post about the diagnostics available via the AC controls, is this the proper way to test for this problem? I put a volt meter on the leads going to the blower and got a 12V reading regardless of what level was selected on the AC controls.
My car is a '98 e300 with 237,000 miles so it has seen its fair share of use,
Thanks in advance,
Mike
I read the great post by Tony on the regulator replacement and pulled out the blower tonight. I suspect my problem lies with the regulator but wanted to check if my troubleshooting is correct.
Last week my AC started blowing warm, but with the same force as always. A quick $100 trip to a local shop and a recharge and it blows cold again, but now does not blow on high (some changes with the lower settings, but no high speed function). As I had all the parts out I carefully turned on the unit again and the fan had a slight squeal and spun up, but then started to slow down to a stop.
I am not sure if this is a typical symptom of the regulator or blower motor, any thoughts? I also read the post about the diagnostics available via the AC controls, is this the proper way to test for this problem? I put a volt meter on the leads going to the blower and got a 12V reading regardless of what level was selected on the AC controls.
My car is a '98 e300 with 237,000 miles so it has seen its fair share of use,
Thanks in advance,
Mike
Last edited by nozzano22; Aug 3, 2009 at 09:33 PM. Reason: more info
Super Member
Joined: Jun 2008
Posts: 835
Likes: 2
From: Bay Area, CA
09' E320
Being a 98 I doubt you can get the reg only; typically prior to 99 you'll have to buy the ~$800 blower motor, heat sink, and reg retrofit part.
You can use a reg from equalivent year W140; you'll have to cut and spice your harness to it. Search should pull up the part numbers.
You can use a reg from equalivent year W140; you'll have to cut and spice your harness to it. Search should pull up the part numbers.
