97 Ram 1500 A/C Help
I have a new a/c system on my 97 Ram 1500 but I have a small leak and over 4 months my system got low. I have manifold gauges and was installing more r134a with the low pressure switch jumped. The problem I have is that the compressor will not disengage when appropriate pressures are reached so therefor the pressures keep climbing. When I remove jumper wire and reconnect the low pressure switch the compressor will not engage at all. What is going on here? Thanks! Greg
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Who installed the new ac system? What all is "new"? Why did you have to install a new system?
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Originally Posted by jkeaton
(Post 3343669)
Who installed the new ac system? What all is "new"? Why did you have to install a new system?
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You evidently have power running thru the circuit.... both switches bad???? Seems unlikely, but, that's where the symptoms are pointing.
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Originally Posted by HeyYou
(Post 3343684)
You evidently have power running thru the circuit.... both switches bad???? Seems unlikely, but, that's where the symptoms are pointing.
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Check the connectors then.
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Originally Posted by HeyYou
(Post 3343710)
Check the connectors then.
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No. It's a series circuit, BOTH switches have to be closed for the compressor to run. If the low pressure switch tests good, and you also have continuity across the high pressure switch, but, it won't run with the low pressure switch plugged in..... I would still suspect the switch. Continuity is VERY low amperage..... compressor clutch is not. :) The switch may test fine under no load, but, fail in a loaded condition.
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I have just noticed the temperature gauge pegs out when the ignition is switched on. Is this related to my ac issue?
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Does it stay there?
Unlikely it's related. Check the sensor located on the passenger side of the intake, toward the front. (it's on the coolant crossover, near the passenger side head.) |
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