Thank you very much for posting this link.

I have just replaced the coolant in my V850, using a 30 percent solution of Nulon anti-freeze/boil & corrosion inhibitor, but now I am having overheating and boiling issues. I am guessing that there may be some air in the system, but I cannot see any air bleed valve. Does anyone know if there is...

[quote="Ozark Lee"]Radio Shack actually has a few thermal fuses but the closest value is 228

Try this google Tranlation: http://translate.google.com/translate?u=http%3A%2F%2Fwww.barchetta-lexikon.de%2F%3Faction%3Dprojekt%26daten%3D037&langpair=de%7Cen&hl=EN&ie=UTF-8 Btw, I used this service: http://www.google.com/language_tools?hl=EN Thanks for that, it seems to translate prett...

OK, the plot thickens. The fuse is a Microtemp Y4A16. Can anyone read German? Here is a page that looks like someone may have figured it out, but I can't read it. Looks like it is a Microtemp thermal safety device with a trip temperature of 216 degrees celsius, presumably it trips out to protect the...

I guess I will need to replace the entire resistor pack, I don't have a spot welder to attach a new fuse, unless silver solder could stand the temperature. I can't see the rating anyway to replace it. Also, I am very interested still with the issue of the FET, I will ask my volvo service centre if t...

The module is inset into the air duct so you will not be able to see the heat sink unless it is removed - they use the air from the cabin blower to cool the module. On the blower resistor that I had to replaced on my manual unit the assembly was held in with a single T-25 torx head screw and it was...

"If you repair the electronic unit please take some pictures along the way and post them back, it will be a huge asset to the Volvo Community. Paying over $120.00 for a Mosfet transistor is insane." I agree, no-one should pay that much for a transistor. I will gladly take a series of photo...

Thanks for the great reply Lee, can you describe where the resistor pack is or how to get to it? There are 2 plug-in modules near the blower assembly, one blue and one black. The black one has a circuit diagram on the case, showing a FET and a bipolar transistor. I was considering disassembling it a...

My 850 has developed the common "Interior fan only blows on high setting" issue. I have looked around the web, some folks say that it is a resistor pack problem, others say that it is a transistor module failure, and that the transistor is an MJ802, which costs about $3.50 at my local part...