Question, I have a 5.9 V8 2001 dodge ram 4x4 with 86,000 miles. It is throwing a evac code, I know this is broad. But what is the most common places for a leak on this truck.
Thanks,
Ben

 

What exactly is the code?

 

It just said evac system leak, nice looking truck.

 

Thanks, Got to have the # for a better answer, but you can check the hoses and make sure the canister is not cracked, also the post cat 02 sensor.

 

Got it codes are PO455, and PO442............could that be the post cat o2? if so how could I check it? .........its not the fuel cap I know.

 

well 455 is a large leak, so you got to check the hoses and the plastic cases and make sure they are ok. The evap duty cycle solenoid is on the right side fender well, with an electrical connection to it, check the plug and the wires going to it(and the hoses). Downloading this will help alot,http://www.rm-indy.com/wavefiles/2001ramsrvcmanual.zip .