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Power Strokes
6.4 Aftermarket
A/C expert needed.
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[QUOTE="Derkperk, post: 1013040, member: 11282"] R-134a is at 80 psi when it's 76* ambient. Telling him the pressure should match ambient tells me you have no clue what you are talking about. Don't give advice on something you are guessing at. If there was a "blockage" his suction would be low not high. Oh, an the "danger zone" on one of those dummy gauges is for when the system is running. I would guess that your compressor is not running. Weather it's the clutch, mechanical or electrical side or your pressure switch has failed. Jumper out our pressure switch to see if the compressor starts and we'll go from there. [/QUOTE]
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