Got a 2020 t680, Cummins isx 15, auto trans. My air compressor seems to be coming on a lot. It does it sitting still and going down the road. We have checked all brake chambers and lines and can't find a leak. We checked with truck running and turned off. Press the brakes and the needle won't drop??? Does the transmission use a lot of air? Is there something else I need to look for??
T680 air compressor
Discussion in 'Kenworth Forum' started by drewfarmsllc, Mar 5, 2023.