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Heating & Cooling 3rd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #11  
Old 08-21-2010, 01:45 PM
trahornio78 trahornio78 is offline
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Ok... i went and invested into a proper gauge set and got some rather unusual readings that didn't appear in my troubleshooting guide. With the compressor off before i ran the engine the low side was high, and the high side was barely reading.
So i ran the truck, and monitored the gauges after i turned on the A/C. i noticed the low side ran at about 50psi and held there, but the high side continued to climb all the way up to 500psi and i turned off the a/c so to keep any damage outta the system (if there isn't some already) So when i turned off the a/c the low side climbed all the way up to 150psi and the high side bled back off to about 100 psi.

Anyone understand what this erratic reading means?
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Old 08-21-2010, 02:11 PM
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I would expect to see numbers like that if the condenser fan isn't operating. Other possible causes are air in the system, overcharging, engine overheating and a restriction in the condenser itself.
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Old 08-22-2010, 02:57 AM
trahornio78 trahornio78 is offline
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welp...i got the problem solved. I had a blown fuse for the condenser fan. So i replaced the relay, and the fan. Found that the relay had some erratic readings when i did a bench test, and the fan was totally shot after i jumped a battery up to it to see if it would run. (it didn't).
Thanks for the help everyone
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Old 08-31-2010, 05:25 PM
jonathanteller jonathanteller is offline
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I'm having a similar problem. Run a jumper line from what to the compressor?
Thanks Jonathan
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Old 09-19-2010, 07:58 PM
jonathanteller jonathanteller is offline
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Hey! are you getting anywhere with your clutch cycling problem? I'm having a similar problem so I'm hoping you can figure it out.
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