Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 07-07-2002, 09:06 PM
Registered User
Join Date: Jul 2002
Location: Dallas, TX
Posts: 77
A/C help for 300SD

I've been having problems with the blower fan. It stops and starts at random. I have found that I could bang below the glovebox and it would start working again but now it barely blows anymore.

I took the panel off and the blower motor seems pretty easy to replace. I'm not much of a mechanic but would appreciate any insite to what I may be getting myself into.
Reply With Quote
Old 07-07-2002, 09:21 PM
WRM WRM is offline
Registered User
Join Date: Jun 2002
Location: BURBANK CA
Posts: 151
it's very easy to replace the blower motor. i believe about 6 screws after the panel is down. to test the blower, check the connections that are on the blower itself.
Reply With Quote
Old 07-08-2002, 01:43 AM
Registered User
Join Date: Jan 2001
Location: Tucson, Arizona
Posts: 758
Test the Blower Motor


A lot of times as the motor ages it squeals to a stop until it cools down a little, and then it starts again. Try removing the motor and hooking it up to battery voltage directly and see if it spins without fail. Hand turning it to let's you feel whether the bearings have lost their lubrication. The blower wheel should free wheel a little after hand spinning it, not come to a rather sudden stop. Also if you are experiencing this starting and stopping of the fan while the acc is in the auto position, it is suppose to do that when cooling or heating temps inside the vehicle reach your preset temp of the temp wheel. Hope this helps you out.

"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 04:08 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page