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Old 11-27-2019, 12:56 PM   #1
BackgroundZombie
 
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AC Troubleshooting help - s14 with rb20det

So, I fu**ed up. Step one is admitting your mistakes.

On to step two. I have a '96 s14 with a rb20det. Last year I used a j30 compressor with custom lines to get my AC working, and it worked wonderfully until yesterday when my dumb ass tried to find a 12v accessory wire coming off of the s14 fan plug so my e-fan would only run when the AC was on instead of all the time.

I used the plug that the stock electric fan plugs into that comes off the triple pressure sensor and I think I must have screwed up and shorted something because now my AC compressor won't kick on.

I ran a jumper (just for a second) to the compressor and could hear the compressor kick on so I think the compressor is fine.

Can someone knowledgeable in AC systems please help me troubleshoot? Could I have damaged the triple pressure sensor? How do I check?

All the fuses are fine, switched the relay and still nothing so I doubt it is that. Any help would be greatly appreciated.
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Old 11-27-2019, 01:49 PM   #2
S14rebuild
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Yea u killed the pressure sensor and probably the control head....

Best is to pull up the s14 fsm and check electrical diagram for the ac system...

Check fuse first
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