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Old 03-23-2017, 01:50 PM   #1 (permalink)
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Default 1995 Geo Tracker A/C Questions

Trying to figure out my A/C problems. The A/C runs for a few minutes and cuts off. The cooling fan doesn't come on unless I remove relay and jump it with a paper clip. At least I can't hear it.

Question 1: How can I test each relay (They are the same #) with them removed from their respective sockets?
Question 2: Is there a generic replacement for them? If not where can I purchase them?
Question 3: In the top sticky on this forum, what repair manual do I use for my (See Signature?
Many thanks, Marvin
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I have a USA 1995 Geo Tracker, 1.6 L with 8V, TBI, 5 speed manual, 2 Door, 2 wheel drive.
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Old 03-23-2017, 02:31 PM   #2 (permalink)
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For the manuals, probably the first one listed under Rhinomans Service Manuals will be the best for you. That stickie also has catalogues where there are part numbers, so you might be able to find your relays there.
I'm assuming that your talking about the relays that are near the fusible link box in your engine compartment. The relay for the fan has 4 wires going to it - the yellow, red, blue/red and blue/black wire. If you disconnect the connector, and test the yellow wired pin for ohms, to a ground, if you get less than 0.3 ohms, the relay needs to be replaced.
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Old 03-23-2017, 03:02 PM   #3 (permalink)
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Thanks Bex, I will try that.
Marvin
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Old 03-23-2017, 06:15 PM   #4 (permalink)
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This is from the 1996 manual, taken from Ack's site. I just coloured coded the wires.

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Old 03-26-2017, 03:24 PM   #5 (permalink)
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So far I have checked out the Fan relay and the Compressor clutch relay.
The Fan relay was rusted and fouled. I could not repair it although I did get the coil portion to work.
I'll try the salvage yard tomorrow, meantime, I need help with a fuse that appears to be a MODIFICATION of the original wiring.
In the picture you can see the tube connector for B+ (Positive terminal battery), the white ODD1 test point, the two yellowish Relay sockets and THEN there is a 30 amp fuse that has been changed from original. It has a large 10ga(Approx) red with black stripe nbd a 12 ga (Approx) solid red wire coming from it. I don't have an original picture to compare it to.
Any suggestions?
Thanks, Marvin
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Old 03-26-2017, 03:54 PM   #6 (permalink)
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Is there any way for me to EDIT my post?
The wire colors are wrong.
The right colors are the Large wire is solid red and the smaller wire is red with green stripe.
Marvin
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Old 03-27-2017, 03:31 PM   #7 (permalink)
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I got several relays from the salvage yard this AM but had to McGyver some wires to make it usable. My Mechanic and I are at odds as to how the fan relay and the compressor clutch relay works.
Will someone please post a schematic on the connections and the voltages that are supposed to be present? Not a system schematic but a generic one, even if it is hand drawn.
Thanks, Marvin
PS, with my two (As far as I'm concerned) relays installed the A/C worked this AM perfect for about 2-3 miles then hot air the rest of the trip.
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Old 03-27-2017, 04:23 PM   #8 (permalink)
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The red wires are 12v positive at all times. The yellow wires are 12v positive with ignition on. The blue/black is 12v positive when relay energised.
The black/white is 12v positive when relay energised. The pink and blue/red are earthed/grounded by the AC amplifier (control unit) when applicable.
(12v positive = battery voltage)

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Old 03-27-2017, 04:51 PM   #9 (permalink)
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Thanks you for the wiring diagram. I'll have to show my mechanic as he was not correct.
Marvin
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Old 04-03-2017, 05:55 PM   #10 (permalink)
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where is the best place to purchase the AC clutch relay and the AC condenser fan relay?
Thanks, Marvin
SEE BELOW for what I drive.
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