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Jerrys1990 replied to the thread Newer HVAC panel blinks.I'll be tacking my door bushings first. Since it's summer and the rig has broken A/C, the actuators aren't as concerning at this time... -
Hmm. Well, if Jerry would like to tackle that project I'd be interested in the end result. I've got a bunch of those head units on my...
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Very interesting. OnDemand5 is a little less clear on this point (8v vs 5v). But changing the actuators to the 92-94 versions absolutely...
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Jerrys1990 replied to the thread Cunningham Machine.Good Morning Jeremy, I've been scanning the Cunningham page for the bushing/pin kits, and the HD roller. Just wondering if all of the...
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Good Evening fellow truck buddies, I am Jeremy Rogers from Cunningham Machine. I am sure a lot of you have heard of us or use our...
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Jerrys1990 replied to the thread Newer HVAC panel blinks.Nice schematic. Thanks. Well shoot.....guess I need a good '90 control unit. I'll keep a lookout at the yard.....evilbay's...
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I had this problem recently on a 1990, where setting it to come out of dash vents vents would make it come out the floor vents, and...
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The manual I've got for '88 shows the actuators running on 8V. The later trucks ('92+) ran on 5V, IIRC: So I don't think changing...
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Jerrys1990 replied to the thread Newer HVAC panel blinks.Tempted to try the actuators first....they're significantly cheaper than a used (and potentially bad) panel from the Fleabay.
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I thought maybe there was something to that different voltage thing, but at the very least according to the wiring diagrams, they get 5v...
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Jerrys1990 replied to the thread Newer HVAC panel blinks.Different voltages to stepper motors......is that why the doors are not landing in the correct position? Will putting actuator...
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You can swap a later head unit into an older truck. It might work for a little while, but there's a difference between the voltages...
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Ah yes... The 90 head actually receives a feedback potentiometer signal from the actuator - 93-94 doesn't. This doesn't affect operation...
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Jerrys1990 replied to the thread Newer HVAC panel blinks.Well that sucks, because another member here mentioned the 93-94 head was a bolt in deal. Also, the recirc, or MAX button, actually...
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Because the older version controllers and newer versions are not compatible, the wiring of the system is slightly different. Older...
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