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.

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.

Test the Blower Motor
 

Greetings,

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.

Charles