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#1
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Dreaded P0442, P0455 on '02 TJ Sport
Okay, so warranty expired a few months back
and now I start getting the dreaded P0442 and P0455 MIL errors (small and large leaks in the evap emissions system). I have reset the computer several times and they keep coming back - no other errors though. So I want to start by replacing the gas cap as some have suggested elsewhere. Local dealership (the only one for 150 miles in any direction) wants $20 and they would have to order it! Is there anywhere online I can get a factory gas cap for a reasonable price? What other things should I be checking related to these codes? Any ideas greatly appreciated . . . JELo |
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#2
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Have you checked to see what the emission control warranty covers? I
think that warranty is longer than the vehicle warranty. You may still be covered for this system. |
#3
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When I had those same codes last Fall, I traced all the evap lines from
the tank to the canister and found a short piece of hose had split right at the purge solenoid. Replacing it cleared my codes shortly after for only $2. -- K.Campbell '01 TJ www.route19.com/jeep/ |
#4
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> Have you checked to see what the emission control warranty covers? I
> think that warranty is longer than the vehicle warranty. You may still > be covered for this system. Good question, hadn't thought of that. I have heard there are differences, I'll have to see what I can find. Thanks, JELo ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#5
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I had this problem, I found that a plastic connector leading up to my intake
manifold from the valve cover was cracked and pulling air... covered it with some duct tape (i know, redneck) and stopped the leak/error codes from popping up. Now if I can only find out what to call it so I can get a new one from the dealership... Troy |
#6
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Here is a parts list for the CCV system:
http://www.off-road.com/jeep/cheroke...ltr/blowby.htm Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Troy wrote: > > I had this problem, I found that a plastic connector leading up to my intake > manifold from the valve cover was cracked and pulling air... covered it with > some duct tape (i know, redneck) and stopped the leak/error codes from > popping up. Now if I can only find out what to call it so I can get a new > one from the dealership... > > Troy |
#7
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Wow thank you very much! I noticed the front grommet was leaking a small
bit of oil onto the valve cover, maybe this will fix it also? Troy |
#8
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Very likely. That system has a constant suction and is really finely
tuned with the intake from the air filter. If the small plastic tube blocks up, which happens pretty often from what I have seen or breaks or leaks, then the engine's normal blow-by will go back into the air filter even, let alone just to the grommet. The grommets also get hard and then leak. I have used RTV on a few to seal them to the cover. They have to be really clean first, then RTV will hold great. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Troy wrote: > > Wow thank you very much! I noticed the front grommet was leaking a small > bit of oil onto the valve cover, maybe this will fix it also? > > Troy |
#9
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You have a leak in the gas cap, or the gas cap is missing.
0442 = Evaporative Emission Control System Leak Detected (small leak) 0455 = Evaporative Emission Control System Leak Detected (gross leak) I would not even consider the cause for the 442, and focus my attention on the 455. After all, a small leak is only a small leak until it is a big leak, but a big leak is a small leak in the beginning. My guess is that your cap is not being put on well, or it has a diaphram of sorts inside that is failing or has failed. either way, you need a gas cap. If you have a locking gas cap, take it off and leave it at home for a couple of weeks while you use the factory gas cap, or any other gas cap for that matter. Clear the code and replace the cap, and see if the code comes back. I don't think it will, and then you can spend the Family Fortune, or your kid's college fund, and buy a new locking gas cap. "JELo" > wrote in message ... > Okay, so warranty expired a few months back > and now I start getting the dreaded P0442 and > P0455 MIL errors (small and large leaks in the > evap emissions system). I have reset the > computer several times and they keep coming > back - no other errors though. > > So I want to start by replacing the gas cap as > some have suggested elsewhere. Local dealership > (the only one for 150 miles in any direction) wants > $20 and they would have to order it! Is there > anywhere online I can get a factory gas cap for > a reasonable price? > > What other things should I be checking related > to these codes? > > Any ideas greatly appreciated . . . JELo > > |
#10
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That is a rubber hose.
"Troy" <troy@ .> wrote in message ... > I had this problem, I found that a plastic connector leading up to my intake > manifold from the valve cover was cracked and pulling air... covered it with > some duct tape (i know, redneck) and stopped the leak/error codes from > popping up. Now if I can only find out what to call it so I can get a new > one from the dealership... > > Troy > > |
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