I've had this in to the dealer 2 times, and the Service Engine Soon light just came on again this morning, so I made my 3rd appointment. Plugged my code reader in, same code, P0442-- which is a leak in the evaporative system. I've checked the gas cap, it's seated correctly.

The first time I did as thorough of an inspection that I could do. I checked all the lines and everything mentioned in my Chilton guide. Everything looked ok, so I did the reset myself. The gas cap didn't feel right, so I was thinking it may have been the issue. 3 weeks later, it came on again, so I took it to the dealer. They couldn't find anything, and reset the light. About 6 weeks later it came on again. This time they changed the fuel vapor storage canister purge regulator--that took 2 days in the shop. That was about 3 weeks ago.

So in 2 trips to the dealer, I've been down 3 days and still have the problem. Arrgh!! They have late hours, but the emissions person must have a 7-3 job.

Anyone else had such a problem? What was replaced or fixed?

Thanks,

Greg O.

 

did you replace the gas cap when you found it a little strange?

 

No, they didn't even though I suggested it. As long as they tested it, I guess I'm ok with that. If they change that last though and that fixes the problem, I guess I'll be cranky...

Greg O.

 

Did you ever fix the P0442 issue?

 

Had that issue on my Explorer. The seal on the gas cap was twisted. Fixed the seal and it cured the problem.

There is a port under the hood where the dealer can plug in a smoke generator and push smoke into the Evap system to find the leaks. There is no reason this should not take more than one visit to the dealer.