V70XC 1998 Code PO442

brycesheri · Post by **brycesheri** » 26 Jan 2009, 19:37

I've lived with this problem for about a year. Just turned it off about 3 times and keeps comming back with the same code. (EVAP Leak small) Last time it read (Leak large) Its off now but I know he's on his way back.
This is my car with 79K
Has new wires, plugs,cap,rotor

Idaho boy

PS It's back!!!

V70Johnson · Post by **V70Johnson** » 31 Jan 2009, 06:55

About six months ago, the dreaded check enging light came on in my 00V70 n/a. Pulled the same code you speak of (EVAP, small leak detected). Did quite a bit of research and discovered that a leak of this kind can be a bugger for the DIY'er to locate. However, my first move was to replace the gas cap. Cleared the code....which returned once the EVAP monitor had run. Rats! Second move was to replace the check valve that's attached to the fan shroud as well as one of the hoses that's connected to the intake manifold. Cleared the code again. Cel light came on AGAIN shortly thereafter! Finally, I blocked up the rear of the car (for easier access), liberally pressure washed the target repair area & began poking around the charcoal canister located in front of the right rear wheel. AHA! found a split in a "J" hose connected to the canister. Searched online parts sources for a replacement & came up empty handed. Fortunately, there was enough good hose behind the split which allowed me to simply cut away the bad section & reattach to the canister....problem solved! Hope this helps, for what it's worth. From what I've read, probably the easiest solution in locating the leak is to have a shop "smoke" the system.

Post by **MadeInJapan** » 31 Jan 2009, 06:57

+1 on the great advice!

brycesheri · Post by **brycesheri** » 10 Mar 2009, 14:38

I finally lifted my car to find the charcoal canister & could't find it. I did find a small crack in a 4" straight hose just below the filler tube. It was a metal tube branching off from the filler tube & went to a white colored servo looking thing.
About 350 miles and so far no "check engine"
Bryce

Post by **Ozark Lee** » 10 Mar 2009, 17:34

There are multiple versions of the evap cannister. Some are at the rear of the car and others are at the front more or less behind and below the air box around the wheel well. It depends on the Chassis number and the emissions codes. Trace the line from the purge valve back and you should find it if it is in the front of the car.

...Lee

birdstephen · Post by **birdstephen** » 21 Apr 2009, 14:57

About 10 hours into it, and 2 cracked vaccum lines later I FINALLY FOUND IT!! The Gross Leak was caused by a cracked hose inside of the driver's side front fenderwell, unaccessable from the engine compartment. The hose goes from the vaccum canister to a large round shutoff valve that will either allows fresh air into the charcoal canister, or restricts it during the purge cycle. This is the largest of the three hoses to the canister Smoke would not have helped me in this situation. A Volvo service tech could not find the problem and wanted to pull the tank out. ($$$)

To access this hose and valve you need to pull the lining out of the fenderwell. This can be done without removing the tire if you turn the wheel and drill out the rivets.

Next I had to master the art of setting all of the readiness codes by going through 2 full drive cycles. Here is how I did it.

No codes, no light, I am off to the inspection station! I hope this post can help someone,