Anybody hook up a Griggs' fan controller on an 04? Need + temp wire - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 08-16-2007
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Anybody hook up a Griggs' fan controller on an 04? Need + temp wire

I've finally gotten the free time to work on John (N3elz)'s electric fan controller. His directions call to hook it up to a red/white wire coming from the fire wall which will have a fluctuating voltage around 4.5v. I have found two red/white wires, one with a low voltage and one with a voltage of 5.2v. The fan isn't working with either one, it just stays on, so I am wondering if I have it hooked up to the right wire. I know the wiring became screwy in 2004, so can anybody help me out here?
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Old 08-16-2007
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I think 1 of the wires is for the neutral gear selector. but you have a manual. i know if its in neutral the fan will run.

I know I had the same issue.
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Old 08-16-2007
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I went out there and gave it another test. Here is what I came up with between the two red/white wires:

.. LEFT RIGHT
OFF 4.99v 0v
ON/COLD 5.01v 1.10v
ON/HOT 5.01v 2.35v

It would make sense if it were the right wire, however the voltage is a bit low, and I had thought the voltage was supposed to drop with the heat, not raise. I'm stumped.
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Old 08-16-2007
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wow i thought john knew everything
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Old 08-16-2007
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Quote:
Originally Posted by 04 EDGE
wow i thought john knew everything
I doubt he'd say he knows everything, however he does know alot. He's been very busy as of late, and I've already called him today to get this far, I don't want to interrupt again tonight.
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Old 08-16-2007
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left right? is that the two different wires? is that in columns? or what? if so its not the right wire.
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Old 08-16-2007
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Sorry to... be more clear, there are two wires that are red/white coming through the firewall. They enter into a plastic clip with one on the left, and one on the right. That is just how I was telling the two apart.
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Old 08-16-2007
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it has to be the one on the left, how hot was it?

btw dont turn those pots!
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Old 08-17-2007
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For my cold test, the gauge was about 1/8 of the normal temperature, for the hot test, it was right about in the middle, which is the normal temperature. I don't know how to use my programmer to figure out what the actual temperature was.

I did actually turn the pots, but I put them back to the same position they were in. Why would I not turn them?
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Old 08-17-2007
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the pots are the adjustment for when they turn the fan off and on.
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Old 08-17-2007
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I understand that, but I have the feeling I am going to have to mess around with them in order to get the fan to work correctly.
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Old 08-17-2007
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john told me not to because they are set correctly already

you had your hvac in the off position right?
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Old 08-17-2007
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I don't have that wire hooked up, I disconnected the purple wre from the hvac a long time ago.

The pods were set up correctly for a 01-03 Ranger. Mine has the stupid 04 wiring, so there could be different voltages we're working with here.
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Old 08-17-2007
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possible but he said it would work with an 04 right?
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