My heater blower switch does not work very well.
If I turn it on 10x, it works 1x, and it only works at the maximum setting.
When I turn on the air conditioning, the blower works perfectly, it is then also possible to regulate the speed.
But with the air conditioning off it doesn't work properly.
Any idea what's wrong?
Heater blower switch issues SOLVED
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- 635sharknose
- Posts: 513
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Heater blower switch issues SOLVED
Last edited by 635sharknose on Wed May 05, 2021 7:45 am, edited 1 time in total.
Paul
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Re: Heater blower switch issues
Sounds like the control unit is bad. It's easily fixable, here:
https://bigcoupe.com/phpBB3/viewtopic.php?t=2465
The heater and A/C blowers are controlled by separate units, and the heater one is much more easily accessible. I did the A/C one. I also replaced the thermal breaker and resistor on mine while i was at it.
https://bigcoupe.com/phpBB3/viewtopic.php?t=2465
The heater and A/C blowers are controlled by separate units, and the heater one is much more easily accessible. I did the A/C one. I also replaced the thermal breaker and resistor on mine while i was at it.
85 635CSi Bronzit
- 635sharknose
- Posts: 513
- Joined: Fri Sep 13, 2019 4:58 pm
- Location: The Netherlands
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Re: Heater blower switch issues
Thanks! Just what I needed.
I am going to take it apart and replace the transistor.
I am going to take it apart and replace the transistor.
Paul
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Re: Heater blower switch issues
Hi
The link w/pics doesn't work. Something to do?
Trond
The link w/pics doesn't work. Something to do?
Trond
Re: Heater blower switch issues
I have the same problem as 635sharknose. I have ordered transistor 64 11 1 381 785 and hopefully it will be alright. Are there any other parts in the heater system that cause problems exept the fans. (I have changed both)
Re: Heater blower switch issues
85 635CSi Bronzit
- 635sharknose
- Posts: 513
- Joined: Fri Sep 13, 2019 4:58 pm
- Location: The Netherlands
- Contact:
Re: Heater blower switch issues SOLVED
Solved! Works perfectly again.
I also lubricated the bearings, runs like a charm
I have used a Darlington MJ11028, including thermal paste.
I also lubricated the bearings, runs like a charm
I have used a Darlington MJ11028, including thermal paste.
Paul
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Instagram: @635sharknose
1987 635CSi Bronzitbeige