apu problem

So im taking my week vac and have the truck at the house, turned off apu for then night, went to start truck for a min....battery was dead put the trikle charger on it and got it running got the apu on and ran it with ac on for about 2 hr but now the battery died again apu wont get enuf power to get it going again, so its back on the charger but any help? Was just in shop and checked out a couple days ago

 

Sounds like an alternator issue. Does the APU cab control come up with a fault when it shuts off?

 

Nope jus keeps trying to start, have the alternator on apu changed out 2 months ago

 

Have you had the batteries checked out? Might have a bad one. I had one go in my original truck and it caused all kinds of havoc until they replaced the batteries.

 

Dont know if they checked it, was the ta in fort bridger,wy they had it for 4 hrs dude said he checked everything

 

Check the wires on the back of the apu alternator make sure they are tight. Since you said it was changed out maybe somethings worked loose? Is this a tripac? make sure alternator/ac compressor belt is tight and intact?

 

Belts are tight ill check the wires here in a few, thanks

 

Is it a strong healthy crank? If not, pull the air filter and see how well it cranks. Then blow the filter out with a good dose of compressed air, if needed, to get you by until a new one can be acquired.

 

Ya it sounds like a good start just cant stay started ill half to look fir the air filter

 

? u say want stay started ? fuel filter ? cracked line ?