|
Evap Codes
A P0440 code is considered a large leak in the EVAP system. Most times it is caused by a loose gas cap.
There have to be certain perameters that are met for the PCM to run the EVAP tests.
Check all you lines and fittings and make sure they are secure.
Don't beat me up for my next comment.........
Your GM dealer has a tool that will pressurize the EVAP system and fill it with smoke to make the leak easier to find. You can always pay for the diagnosis of your problem and then fix it yourself.
Some of your EVAP problems are difficult to diagnos, but a large leak should be fairly easy to find.
__________________
Why do you never have enough time or money to do the job right the first time, but enough time and money to do it again?
Got all the certifications
25 years ASE Certified Master Technician
GM WCT
Yea..I work at a DEALERSHIP....got a problem with that?
Want to diagnose cars like the Pros? FOR SALE: OTC Perception 2 channel Labscope (badged as a Matco Reality)
This is my personal labscope that I use to diagnose waveforms, like new, comes with leads and training video
PM Me for details
|