A few months ago I bought this beauty with 745 miles. It looks like a truck fresh off the assembly line. Beautiful. Every inch of it. I flew from Texas to Battle Creek Michigan and inspected it. Amazing. I paid and got the paperwork and began the long drive home to South Texas. Just outside of Indianapolis I lost air pressure. The unloader gasket failed. Long story short I made a new gasket in a Napa parking lot. Reassembled it, got air pressure and drove it the rest of the way to South Texas without an issue. Its a fantastic truck and the adventure was worth every mile.
Its never built air pressure well. It builds slow and takes a while to recover. I rebuilt the air dryers top and bottom and got no change. I replaced the governor and got no change. I blew out every line and got no change. I checked the PPV. and it was fine. I checked all the one way valves and found no issues. I bypassed the air dryer for a test and there was no change. I unstuck the unloader and the change I got was hotter temps on the unloader (208 degrees on unloader and 147 on output line). It will not build past 90 psi and it takes a loooooong time to build that high. I connected an aux airline to the emergency glad hand. It builds and holds pressure. No leaks. I hooked an auxiliary air line to the front drivers side blue glad hand. It holds pressure. No leaks. The horn hisses but wont blow. The CTIS quit working in Indianapolis and hasn't worked since.
I think Ive pretty much covered everything short of replacing the compressor. Im going to order a compressor and install it. Did I miss anything simple that I will kick myself for later when a new compressor doesn't solve the problem?
Its never built air pressure well. It builds slow and takes a while to recover. I rebuilt the air dryers top and bottom and got no change. I replaced the governor and got no change. I blew out every line and got no change. I checked the PPV. and it was fine. I checked all the one way valves and found no issues. I bypassed the air dryer for a test and there was no change. I unstuck the unloader and the change I got was hotter temps on the unloader (208 degrees on unloader and 147 on output line). It will not build past 90 psi and it takes a loooooong time to build that high. I connected an aux airline to the emergency glad hand. It builds and holds pressure. No leaks. I hooked an auxiliary air line to the front drivers side blue glad hand. It holds pressure. No leaks. The horn hisses but wont blow. The CTIS quit working in Indianapolis and hasn't worked since.
I think Ive pretty much covered everything short of replacing the compressor. Im going to order a compressor and install it. Did I miss anything simple that I will kick myself for later when a new compressor doesn't solve the problem?
