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Old 12-13-2017, 02:08 PM   #1
DME
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Default Confirming dead blower in 240

Fan crapped out last week, perfectly time to coincide with a brutal cold snap. ('92 240)

No screeching, squealing, etc. It stopped and when I noticed I turned the fan off, back on, and it ran for about five seconds and slowed to a stop.

I've fiddled with the fuse, jumped it, etc. The best it will do is run for a few seconds and then slow to a stop again. If I restart the car after a couple of minutes it will repeat and stop.

To confirm: she's dead Jim, correct?

Dave
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Old 12-13-2017, 02:42 PM   #2
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Yup. That sounds like a dead blower. Good luck and have fun. While you're in there, you should replace the hvac console bulbs.
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Old 12-13-2017, 02:44 PM   #3
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Unplug the red wire from the back of the fan switch connector and put power directly to it. If the blower motor runs fine doing that the problem in in the switch or resistor. If it doesn't, the motor itself is the problem.
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Old 12-13-2017, 03:18 PM   #4
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Run your new blower fan for at least 5 minutes before you install it. This will: Show that it worked.. 2. Keep some of the brush-seating dust out of all the rest of the car when installed. Good luck on a thankless job.
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Old 12-13-2017, 03:42 PM   #5
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Hire an Elf
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Old 12-13-2017, 03:59 PM   #6
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I'll run power to it and see what's up.

My '84 is acting up and my GF's truck has a leaking water pump.

F**K ME RIGHT?
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Old 12-13-2017, 09:36 PM   #7
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Be sure to buy new blower wheels and clips when you buy the motor. You will likely trash the blower wheels yanking them off the motor shafts.

Your blower motor likely looks like this.
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File Type: jpg Blower_Motor.jpg (108.4 KB, 101 views)
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Old 12-13-2017, 11:04 PM   #8
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The resistor and it's wiring burn out too. Have fun digging them out. I recommend an OEM resistor and a VDO blower.
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Old 12-14-2017, 12:33 AM   #9
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The resistor and it's wiring burn out too. Have fun digging them out. I recommend an OEM resistor and a VDO blower.
That's exactly what I did.

If you remove the dash, getting the resistor is easy to change.

I've done this job twice. Once leaving the dash in (first time), once taking it out (second time).

If I ever have to do it again, I'll take the dash out. Way less hard on my back.
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Old 12-14-2017, 12:54 AM   #10
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If I ever have to do it again, I'll take the dash out. Way less hard on my back.
Yep dash out is the way to go and that tip about running the new motor for 5 mins before install is a great idea. It's a day's work but worth doing as the alternatives suck... no heat or paying someone to do it. Of course this crap always happens in cold weather.
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Old 12-14-2017, 01:06 AM   #11
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Just finished this job on a customer's car yesterday. I always remove the dash. It is actually quicker for me to do so.
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Old 12-14-2017, 01:09 AM   #12
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Make sure the flange of the new motor is in the same spot as the old one. My first replacement motor had a flange that was a little off. I didn't notice and had to do the job twice.
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Old 12-14-2017, 04:13 AM   #13
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Originally Posted by quillc View Post
That's exactly what I did.

If you remove the dash, getting the resistor is easy to change.

I've done this job twice. Once leaving the dash in (first time), once taking it out (second time).

If I ever have to do it again, I'll take the dash out. Way less hard on my back.
A) "Dash In" - Elf Technique (last time)

B) "Dash Out" - Non-Elf Technique (next time )
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Old 12-14-2017, 05:39 AM   #14
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Another idea, pick up a spare 1991-on heater box. Do your blower motor install inside the house at the kitchen table. Then, go out, pull the dash and get the old heater box pulled. Once it's removed, install the spare box with the 303 stainless steel heater hose fitting firewall port that STS Machining (77volvo245 here on TB) sells. Reassemble the dash. Take the old heater box and prep it for a new blower motor and resistor. Install it in the '84 when that car needs to have its blower motor replaced.

https://www.stsmachininginc.com/prod...-1975-1993-240

-J
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Old 12-19-2017, 05:38 PM   #15
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X2 on just pull the dash top & bottom, plus the seats. Don't need to pull the steering wheel. Just all the stuff around it. Been there done that a few weeks ago. Not as bad as our Jeep Wrangler JK I did a while back if it makes you feel any better. That had to go to the bare firewall and the AC had to be re-charged Chrsyler engineer bastards. They all do it that way now so we-the-people can't work on them anymore.
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Old 12-19-2017, 06:01 PM   #16
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Suggest a six pack of cold beer waiting as a reward.

Extra Heater Blower Fan Blade (Wheel) Retaining Clips!
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Old 12-19-2017, 06:22 PM   #17
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Start with a 6 pack send wife out for more as depleted. I just did a blend door on an Expedition, was a far worse job, the center console giving me the most problems. I don't know how auto techs do it everyday, or maybe I'm just too old fat and lazy.
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