1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

A/C compressor locked up

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Old 02-03-2011, 10:59 AM
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Default A/C compressor locked up

my ac compressor locked up yesterday and burnt the belt up and all that good stuff. my question is i went to oreillys to price a new one and they had one that with intercooler and one without intercooler. and 100 dollers in price differnece. but whats the difference? my truck is a 93 intercooled truck but why does that affect the compressor?
 
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Old 02-03-2011, 11:54 AM
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Who knows maybe how the lines come into the compressor. I will suggest a new versus rebuilt compressor, I put a rebuilt on my truck and it was junk 10 months later and then I went with a new one.
 
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Old 02-04-2011, 12:58 PM
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Intercooled mounts with 4 bolts straight through the compressor, into the compressor mount, Non-Iced mounts similar to how the alternator does.
Non-Iced also has a slightly larger pulley.

The pulley/bearing assembly to rebuild a Non-Iced A/C compressor is extremely hard to come by.

Be glad yours is intercooled.

Mark.
 
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Old 02-04-2011, 01:13 PM
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thanks for the info guys. but come to find out upon further inspection of it when i got home the ac is fine. the water pump was my culprit. im glad to cause its a lot cheaper haha
 
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Old 02-04-2011, 01:19 PM
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The water pump actually LOCKED UP?
There's one that doesn't happen every day.

Mark.
 
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Old 02-07-2011, 06:02 PM
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no it didnt lock up
it just had alot of play in the pump and caused the belt to get all knarwled up.
i thought the ac was locked up and was what caused it, but that was a quick assumption cause i was in a hurry to get to school. i trailered it home the next day from where i left it and realized the ac was fine
 
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Old 02-07-2011, 07:38 PM
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At least it's cheaper than a new or reman A/C compressor.

Mark.
 
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Old 02-08-2011, 06:34 AM
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Make sure you get ALL the bits of metal out of your system before firing it back up.
 
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Old 02-08-2011, 04:07 PM
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yes sir alot cheaper and easier to fix. i changed it without even taking the fan off, it was kinda a bitch but i got it done. putting the new belt on was the hardest part
 
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