Peterbilt 379 119 heater won't turn off - New Ray 1/32 Peterbilt 379 Grain Hauler #12083

you can get help from the service and repair manual which will guide you to fix the problem with diagram and you cna get the manual from the given link http://toolsnyou.com/

See if this link will get you what you want.


wiring diagram 03 peterbilt 379

Hi you have a short or break in the wiring its usually were the hinge movement operates that the wiring loom goes through.

check that the heater control tap is being turned on when you select hot
check for air trapped in the heater core and not allowing hot water to circulate

It's so new you should not have a problem but you are not getting coolant to flow through your heater core. I suspect an electrical problem around the water shutoff valve or a vacuum hose or cable not opening the heater valve. You might be able to manually open the heater valve.

has to be some diagrams on internet somewhere. Did you try Peterbilts web site?

A tractor is not software, please repost in the correct catagory.

the flasher is behind the left dash panel behind ur pyrometer