Question about 1996 Dodge Stratus

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A/C builds up too much pressure and pops off high pressure relief

I have replaced the expansion valve the high pressure hose, high pressure switch, and the Receiver dryer While driving the car it builds up to much pressure (450# +) on high side and pops off the pressure relief valve
Only thing left is condenser but I would think it would be pluged and either work or not work some times car A/C lasts 2-3 days
Car is a Florida car

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  • Blinkincrazy May 11, 2010

    It is a small system and after the high pressure pop off I brought the pressures back to 30# in low side and 225# on the high side if you run car at high idle it builds up and after about 3-5 minutes it is exceding 450# on the high side

  • Blinkincrazy May 11, 2010

    The condenser fan does come on high

  • Blinkincrazy May 11, 2010

    The high side (pressure (450# +) on high side

  • Ned C Cook
    Ned C Cook May 11, 2010

    Too much pressure on which side? Hi or Low?

  • mike loshbough
    mike loshbough May 11, 2010

    does the condenser fan come on high?

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Have you added freon to system because it sounds like there is to much

Posted on Jul 26, 2009

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I have a 93 f150 my ac bulds up to much pressir and pops off the relefe valve ive replaced every thing any sugestions?

Posted on Sep 07, 2009

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A/c compressor runs with dash switch off then loses freon from relief valve


we can solve this, but i need more info, a/c compressor should not run with the dash switch to off, so there could be a short in the switch or something is powering your a/c compressor.

another thing is the gas being relieve to your relief valve, your condenser fan could not be running there by creating a high head pressure to relieve on the relief valve or the valve could be open already and not the type where it seats back if the pressure is already low.

are you just putting gas right now as these things happens?

if so, you could have a clogged in your system, building a high head pressure to relieve in the valve.

the clogged could be in the filter dryer, or the expansion valve inside the evaporator coil.

tnx 4 using fixya,


drcool

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