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this truck must not have this set up because there is 2 valves on front of the cross member that does not have any switches in them. there are 2 switch on a air tank on the right hand side. thank you for your time and help with this.

cant find it. i found the park brake valve with the 2 switches in it but the service brake valve does not have any switches in it.

where is this switch located??? the only switch i can find is on the park brake valve back by the rear axle. its not on the foot (treadle) valve is it??? thank you for all your help

have you ever ran into this problem before or heard of this problem??? thanks

it is a very intermittent problem that we have not been able to duplicated. we have drove it multiple times multiple miles. i will try disconnecting the psi switch and see what happens? Will this illuminate the brake light or abs light??

air brakes. no abs codes

im working on a 2006 hino 268 with a allison 2000series trans. when going around a corner or even on a straight away unit seems to loose throttle responce. no codes in engine or trans. i have to shut the truck off and let it sit for a bit and start in up and away we go again. sometime it takes a...