Hello, my air pressure builds to 60 psi only if I’m holding down the throttle but won’t build after that. Once I start driving it builds to 140 psi. Last week my air pressure shot up to 160 psi out of the blue while driving a couple times, I hit the brakes to make it drop. I changed the air governor on the dryer already. Can the issue be a weak compressor or bad air dryer?
Air pressure issues
Discussion in 'Trucks [ Eighteen Wheelers ]' started by BWEST160, Mar 2, 2020.
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