A/C blower is intermittent
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A/C blower is intermittent
2010 Tribute The AC blower motor sometimes works, sometimes not. Did this a couple months ago for a few days, then was fine. Now has returned just in time for 90+ days. When not working it does not work on any speed; nothing at all. When it does work it's fine at all speeds. I replaced both fuses.
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Joined: Dec 2009
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The blower on our 2010 stopped for a couple of seconds last Saturday while driving in 94*F outside temps. Hasn't done it again. I don't think it's the end of it. Hopefully someone will pipe up with the fault and fix.
Logistics Pro
Joined: Jan 2002
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From: suburban atlanta
If you do not have automatic temperature control, you really only have a few things that can interrupt the blower motor. Fuse, switch, wiring, motor brushes, and resistor block.
I think I would pull the resistor block and check for cold solder joints. When set to high speed, the power goes through the block directly, and obviously isn't getting through.
A fellow from the UK reported he had a cold solder joint, which he just re-soldered.
tom
I think I would pull the resistor block and check for cold solder joints. When set to high speed, the power goes through the block directly, and obviously isn't getting through.
A fellow from the UK reported he had a cold solder joint, which he just re-soldered.
tom
Logistics Pro
Joined: Jan 2002
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From: suburban atlanta
I think I would let the Ford guys handle that if it is under warranty. Other brands will disable the power to the A/C clutch if the blower motor controller fails to provide feedback that the blower is operational. You get bupkis unless you put the blower control to 'max' in the manual mode. Odysseys have that system, and their controllers are stocked locally... at about $55/per. Think they have a problem? They use a chopper transistor which switches on and off quickly to provide variable power to the blower to regulate CFM. It fails when overheated.
I expect FoMoCo has something similar to regulate the blower electronically, particularly if you have the dual temp setup that lets passenger and driver pick their own temperature settings. One could be demanding full blower output while the other needed the minimum. Too dang fancy, as we used to have 4-40 air conditioning. Four windows down going 40 mph. Easy to regulate... with immediate feedback from whoever was in the wayback... or as we called it, the back-back.
tom
I expect FoMoCo has something similar to regulate the blower electronically, particularly if you have the dual temp setup that lets passenger and driver pick their own temperature settings. One could be demanding full blower output while the other needed the minimum. Too dang fancy, as we used to have 4-40 air conditioning. Four windows down going 40 mph. Easy to regulate... with immediate feedback from whoever was in the wayback... or as we called it, the back-back.
tom
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Joined: Dec 2009
Posts: 435
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You aint a kiddin they've got to fancy. I like it simple. My Mrs likes every bell and whistle they can squeeze in it. I work in the field of electronics and solid state drives. It's amazing what can be done with electronics and it's getting more reliable after the teething problems in the '80s. Once you get familiar with the devices you work with, it's not that bad.
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dknouse
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Oct 9, 2010 11:36 AM
