BackGround. 1995 International 9200 12.7L Series 60 Detroit
The air conditioning system worked fine late last summer hauling forage until it blew the belt. Long story short, that truck doesn't get used much, and its finally in the shop getting attention. I put on the new belt and tensioner, idler pulley and went to fire up the a/c, compressor wouldn't kick in. Check the usuals, switch under the passenger seat gets power to both sides, fuse was good, relay clicks when the switch in the dash comes on, but no power out to the compressor. Ended up screwing around with the a/c relay, and noticed when I pushed it back in, for a slight moment, I had power to the compressor, and then that fast it was gone. Now if I hold the relay just slightly at an angle, it will put power to the compressor, and then when I push it all the way in, it kills power to the compressor. I know I must be missing something completely obvious, but searching for some help. Thanks in advance
1995 International 9200 A/C relay Problem
Discussion in 'International Forum' started by springtown76, Sep 13, 2019.
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Try swapping another relay to see if the problem follows the relay or you have a bad socket. The terminals inside get sloppy and have a poor fit and poor electrical contact. Look closely at the plastic to see if there is any signs of melting which is due from a bad connection.
springtown76 Thanks this. -
Swapped relays around, get the same thing to happen. There isn't any melted plastic around where the relay plugs in, but I can just get my finger wiggled back there and just touch the wires. The terminals inside the socket seem to move around fairly easy. I'll maybe start there. I'll post an update as I get through that.
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Check the relay numbers on the body. Pin 30 is usually main power in, 87 is that main power back out when the relay is triggered. Pin 85 is where the signal power comes in to trigger the relay, and 86 would be ground. One of those terminals must be loose and making a bad connection if you can wiggle it to fix it. It will still fit tight when only 2 of 4 terminals are in good shape.
AModelCat Thanks this.
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