IPD sale Volvo Parts
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Another blower motor dilemma

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

User avatar
Posts: 1
Joined: Sun Sep 23, 2018 9:36 pm
Year and Model: 2001 V70
Location: Minnesota
Has thanked: 0
Been thanked: 0
United States of America

Another blower motor dilemma

Post by AstridV40 » Sun Sep 23, 2018 10:04 pm

Hello folks!

First post here.

My Volvo V40 (Astrid) is having temperamental issues with the interior blower motor. Seems to be quite common with these cars. It's almost as bad as 90s Jeep Wranglers. My issue is slightly different than just replacing the resistor (why do people call it a 'resistor'? Isn't it a transistor?).
I just finished replacing it. Still no dice. However, I can here it click when turning the fan switch. I assume that means there's no issue with a fuse or relay (is there a relay in this circuit?). I have not put a meter on any of the outputs to verify.

What are some things I should be checking? is there a way to verify current to the motor or run the motor directly from a 12v source?

User avatar
Posts: 553
Joined: Fri Apr 29, 2011 9:25 am
Year and Model: 1995 854T
Location: Connecticut
Has thanked: 1 time
Been thanked: 6 times
United States of America

Re: Another blower motor dilemma

Post by alschnertz » Sat Sep 29, 2018 4:43 pm

Can't help much, but I would think that a typical DVM would enable you to verify the current and voltage by backstabbing the blower motor connector.

Yes, S40s have issues with the HVAC controls.
My '01's blower has a mind of its own. If it bothered me that much, I'd send the ECC to xmodex.
But I generally don't have the A/C or defroster on where I live.

I've also changed the "resistor" but it didn't resolve anything.

'60 PV544, '68 220, '70 145S, '86 745T, '95 854T, '01 S40
'84 Prelude
'06 MPV
'13 Ford Focus SE

Post Reply