Many shops are reporting problems with P0442 EVAP small leaks in Chrysler vehicles. The computer puts the system into a leak detection mode and pulls a vacuum on the gas tank, venting hoses, and charcoal canister. Then it watches a vacuum sensor to figure out whether the leak is a large or small one. The most common small leak is found right in the rubber hoses right at the charcoal canister. To diagnose, lower the canister and check the condition of the rubber hoses. If you see ANY cracks, replace the hoses. It will take the computer a while to run the test again before it will clear the code and turn off the check engine light.
Want more information about this repair? Click on eautorepair. This is the consumer version of the professional mechanic's online shop manual Mitchell On Demand. It contains exactly the same information the professional mechanics get. You can print out every service procedure, specification, component locations, wiring and vacuum diagram, TSB, and recall related to your vehicle.
0 comments:
Post a Comment