I recently replaced my heater blower with a used one. When I plugged it in it took off on high....with the key out of the ignition and the switch off. I figured it was bad, so I put the old noisy one back in and I get the same thing. The only way I can get it to go off is by pulling the high speed fuse. The advice I got was it was probably the resistor...so $45.00 later, resistor replaced but still have same problem. Full speed ahead. The first three speeds will not work with the high speed fuse out. ANy ideas??

How can the blower get juice if the car is turned off? It works in pos I and II of the switch only. Have you checked the archives, yours is not the first time this has happened. But turning the car off has to turn off the power unless your ignition switch is bitting the dust.

Klaus
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98 V70Rawd(101Kmi), 95 854T(85K mi), 88 245(165K mi)

Trust me...I'm just as confused as you. Like I said I took out the old, noisy blower....plugged in the new one and it took off on high speed! (with the key out and the ignition off, and setting at 0) I have had no problems like this before. It will only operate on high speed, and the only way to shut it off is by pulling the fuse. Even when I put in the old noisy blower I now get the same thing....It will not operate on any other speed....Brand spankin' new $45 Volvo resistor from FCP installed yesterday and same thing....I hate the thought of taking this in for repairs. My 227,00 mile wagon has been a trooper and I hate the thought of what it will cost me to get this fixed. For now, I am putting in the fuse when it's cold so I have heat and pulling the fuse when I park it...I was wondering if maybe it could have to do with the 2 blue Hella relays (even though they click when blower speeds are changed) that are in there....I don't know what else to do, Anybody know anyone in Northern Indiana that wants a challenge??

let me know if you find someone in northern indiana that can look at this at a reasonable cost. i'm located in south bend, and i cant get my blower to work at all. i replaced the ecc control unit and the "resistor pack" and the fan will never even start to work. i was wondering if the hella relay would affect this too. i can connect the blower to another 12v lead and it works on high speed, but it pulls way too much current. no defrost sucks!!! it's getting cold here in the s.b.

I'll let you know if I find out anything. I'm only about 15 to 20 miles from South Bend (in Bristol). Everyone I talked to is just as puzzled as I am. I have manual climate control, and my next step was probably to change out the unit. But the hella relays were just one thought I had. At least I can pop in the fuse and have heat if needed, but it;s a pain to have to pop the hood and pull the fuse all of the time....I just don't want to have to spend a mint at Jordan Volvo.