CBB9M
23 year Ranger veteran
Joined: Sun Oct 22nd, 2017
Posts: 371
Name: Bill ... Occupation: Interests:
Reputation Points: 371
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Kealel wrote: CBB9M wrote: ^^^^ There isn't much wiring in the blend door circuit so if you built it right initially and did a quality job with any splices/connectors (properly soldered joints, insulation, etc) I'd be suspicious of a component and not wiring. As an alternative to digging out a FSM, don't you have known to be working spare parts around that can be quickly swapped in for test purposes? The reason I was thinking wiring is because it is possible the temp controls had something to tell they system the user wants cold air, 3 drunk guys (yes we had been drinking when we made the wiring and swapped in the dash) could easily miss a hidden wire in the big mess of wires involved in a whole dash.
Before the swap everything worked perfectly which is why I think wiring.
As fir spare parts, I do have a complete system - for a 2002 and older setup. Nothing 2003 or newer which is what my truck has.
If the blend door worked correctly when you finished work on the first go-around and has since failed, I'd suspect parts (and there's just two). If it's always been broke, I'd go in there with a DMM and check wiring. Five wires, one hot, one ground, and three that run between the actuator and the pot on the dash.
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-Bill
04 Ranger FX4 Level II, several mods
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