Volvo RWD 200 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 5/2003 200 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Confused about blower fan switch wiring and circuit 200 1987

posted by  thrashed200m on  Wed Jul 14 14:15 CST 2010
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Jun 8 06:27 CST 2012
[RELATED]

1987 240. My blower fan is making an annoying sqeak, of course, so I thought I would wire a simple off switch in until I could get around to replacing the motor. I pulled #3 fuse, and now the fan doesn't run in the higher switch positions, as I expected, but DOES still run, slow and noisily, in the lowest ( furthest left ) switch position.

Fuse in: runs in all switch settings, faster in the higher ones
Fuse out: runs in furthest left switch position, not in any others

So, I'm confused. I guess either there are two power circuits to the motor, or there are two motors, or my car's wiring is messed up. Can anyone clear up which it is, or some other possibility I didn't think of ?

Is it possible to simply put an on/off switch in the fan switch circuit, so I can turn it completely off when I'm not using it, and turn it on to send power to the stock fan switch ? Or, is it more complicated than that ?

Thanks for any assistance. I searched under variations of fan and switch, and found all the posts about replacing the motor, but didn't run across any that seemed to be about this . . . .

Chris








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Confused about blower fan switch wiring and circuit 200 1987

    posted by  weather on  Wed Jul 14 14:31 CST 2010
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 26 23:16 CST 2012
    [RELATED]

    when AC is on, the AC system provides the current for the lowest fan speed circuit.








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Confused about blower fan switch wiring and circuit 200 1987

      posted by  thrashed200m on  Wed Jul 14 14:38 CST 2010
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Fri Jun 8 06:27 CST 2012
      [RELATED]

      Thanks for the reply.

      The A/C was off. A/C doesn't work, actually - no pressure in the system, so compressor doesn't kick on, another item on my to do list - but at any rate, the AC knob was at the red end of the range.

      So, if I understand it, there are two paths for juice to get to the blower, and the fan switch is just one of them ?








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Confused about blower fan switch wiring and circuit 200 1987

        posted by  weather on  Wed Jul 14 15:12 CST 2010
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Fri Oct 26 23:16 CST 2012
        [RELATED]

        AC only provides the juice when your fan switch is at OFF and your AC is on. it doesn't matter if the AC actually cools or not.

        so yeah, there are two sources.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.