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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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How to Replace the Heater ResistorViews : 26028 Replies : 74Users Viewing This Thread : |
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May 11th, 2012, 09:00 | #11 |
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If the blower speed is sporadic, then the fault is at the heater control panel.
You could try using a soldering iron and heat up the solder in the contacts. If this does not fix the problem, you can replace the potentiometer. Or get another second hand unit. See here: http://forums.swedespeed.com/showthread.php?70699 and here: http://www.30forty50.com/forum/topic..._1#entry130968
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Nov 3rd, 2012, 21:08 | #12 |
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I can't thank you enough for this outstanding guide. I used it to replace the just the transistor. My fan blows as intended now.
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Nov 3rd, 2012, 21:16 | #13 |
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Glad I could help
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Nov 5th, 2012, 00:14 | #14 |
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Reading this thread reminded me I have a boxed brand new resistor for a phase 1 non climate. part no.30875042. Can't remember why I bought it or why I didn't fit it in the end, but the car it was for is long gone. Anyone want it for the cost of postage? It is an actual resistor not the (I presume later) transistor type.
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Nov 5th, 2012, 00:24 | #15 | |
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Quote:
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Nov 5th, 2012, 00:29 | #16 |
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Probably why I still have it! Can't remember what the problem was at the time or how I cured it.
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Jan 23rd, 2013, 16:20 | #17 |
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a/c on-off-on-off
Hi. I've been reading up about intermittent problems with heating fans, dodgy solder joints on pots, the resistor behind the glove box and faulty a/c control boards. I'm none the wiser as to where to start.
Symptoms: All works fine, a/c light green, fan running. Then suddenly a/c light turns red and fan stops blowing. Then it goes back to working fine. Then it stops again. When it stops working, the fan stops: no variation, it's either on (to whatever it's set to) or off. If I switch off a/c, I get the same effect, i.e. the fan stops blowing, but the a/c light stays red. Should I start by resoldering the pot joints and checking their operation, or should I start with the resistor under the glove box? |
Jan 24th, 2013, 21:49 | #18 |
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Potentiometers first.
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Jan 25th, 2013, 11:16 | #19 |
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great write up Gatos,I'll know where to look if this happens to me! my car that is.
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Jan 30th, 2013, 14:28 | #20 |
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Thank you
Me and husband really are learners when it comes to fixing our V40, but THANKS to Gatos and his photo's it's all done for £2.89 no garage bill and a bit of a laugh had, can't thank you enough
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