Look right in the wheel well, this is what caused mine:

 

Gotcha will check that tomorrow, thanks man

 

Damn, mine was still on tight, hmm probably a bad 02 sensor more than likely.

 

has your gas mileage gone way down? that would point to an 02 sensor.
anyway u need to get the codes...

 

Nope it hasn't one bit, I'm running super in it now gonna see if that clears anything up but I doubt it, I'll bring it to autozone on friday and have them pull the code(s). Hope its nothing expensive, I got about 2k in tools to buy for college this fall :\

 

2003s dont have that.

no egr either!

 

oh really? Any other possible problems that cause this? Still reading up on it.. Haven't noticed anything unusual, truck is running fine just like it always has been.. It just randomly came on yesterday morning on my way to school.

 

I take that back, mine had it but i removed it.

 

Have you got the code pulled yet?

 

I haven't had time today, I will go to autozone tomorrow on my break from school and have them pull it and get back to you guys, I want to figure out what the hells wrong..

 

just got back from next door and my and my bud were workin on the truck taking off the old bumper brackets, anyways we pulled the code it was a P0442 I believe and it was my evap line.. The light was in the red haha.. we tightened a few things and re connected it but the line is corroding from the outside got black stuff all over my hands, so after we did that we erased it, its gone for now but I bet it will come back, I'm going to get some automotive tubing and replace the line. Thanks trent for the help btw..

 

Np, I got the tubing from autozone for like a couple bucks, it was cheap. Just tell them its for fuel vapor, not actual fuel.

 

I'll pick some up tomorrow thanks bro, just glad it's going to be an easy fix.

 

My son has '02 Ranger that threw a P0442 code at the inspection station... he has 15 days to get it fixed and re-inspected. They said it was not the gas cap (it passed with some tapping on it) (Guess the valve was stuck) If it is the cap, and he gets a new one, how do we re-set the fault code? Before taking it back for inspection? And if not the cap, then where is the next best problem area to start looking... he is 16 and funds are very limited right now... even the 40 bucks for the smoke test will be too much right now.

 

Did you check all the stuff mentioned in this thread?

 

ok he just got home from school and we found that the cap seems good, no tears or cracks and doesn't rattle.
I looked at the canister and the vent hose from the intake to the bottom of the canister was a bit dry rotted ( it cracked on the surface when I bent it, the upper portion was fine above the hose connector) , so I just sent him to the store to buy a new hose.
I also saw that coming off the air filter box hose there was another hose leading to the top of the head covers. This was not connected... so I re-connected it. He will ask the Auto-zone guys to run the code reader on it again to see if they can clear it. then buy the hose and install and re-read it / clear it.

 

Just back from Auto-Zone, they say you have to get the hose from the dealer ???
That it is a specialty order, that can't be correct, right? It is just a vapor hose with a few bends in it... anybody have the part number?

 

see post #24
i used normal vac line about the same diameter as the original. been working fine for 30k miles...
but it still could be the valve set inline or the solenoid. check the valve first it's cheaper. some people can get it to work again by cleaning it out with carb cleaner...

 

This is gonna sound stupid but I cannot locate a inline valve... the line comes from the bottom of the truck along side the frame up to the bottom of the canister, goes through a coil of plastic housing then back out the top to the hose that I said was dry rotted a bit, then it goes to a connector and another hose that fits to the intake.... And what is that little green cover cap for? I have noticed that I have two of these canisters on the truck the first one mounted to the wheel well, the second is mounted by the intake on the motor itself. The second one only has one small tube connecting to it.

 

bump...

 

well after "cleaning" the canister, disconnecting all the hoses and then reconnecting them, and resetting the pc by taking the battery down for about 30 mins... I drove the thing for another 80 miles to reset the pc and brought it back in for a passing inspection... Thanks for all the tips!!! Istillneed to replace that bottom hose but now it wil be on my time and not the states request...