P0455 but can't find a leak?
03-23-2011, 01:19 PM
#1
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Year: 1998
Model: Cherokee
Engine: 6
P0455 but can't find a leak?
Ok, my 2000 has started showing the code P0455, vac circuit leak(large). I put on a new gas cap, no change, I have traced every line and hose 3 or 4 times but every time I reset it 10 or so miles later it comes back on. I was told a selonoid could be stuck open. Where are these and how do I check. Thanks in advance for any help!!!!
03-23-2011, 03:23 PM
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
have you guys checked the line to the charcol canister and to the fuel tank it says large that will not be the small lines under the hood
03-23-2011, 03:30 PM
#5
An EVAP system leak has nothing to do with the AC system, exhaust or the 02 sensor. It means a fuel vapor leak has been detected. If you cant find the leak by a visual inspection of the evap hoses then the only sure way to find it is a smoke test. Could be the purge valve on the charcoal canister or one of the lines from the gas tank that you can't even see.
03-23-2011, 03:37 PM
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Year: 2001
Model: Cherokee
Engine: 4.0 Straight 6
a week or so before this code popped up, i pulled the jeep over once with a clicking noise....sounded like it was coming from the passenger side back near the firewall.....i actually have a video of it because at the time i thought the bearings in the engine were dying so i was testing that.....(hopefully my soon-to-arrive oil analysis will get rid of that fear)
when i get home from work ill find the video and post it.....but could that be a faulty purge valve/solenoid/whatever?
if that's what caused my problem....could be of some use to the OP (that was my weak attempt to disguise any threadjacking)
when i get home from work ill find the video and post it.....but could that be a faulty purge valve/solenoid/whatever?
if that's what caused my problem....could be of some use to the OP (that was my weak attempt to disguise any threadjacking)
03-23-2011, 03:39 PM
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
a week or so before this code popped up, i pulled the jeep over once with a clicking noise....sounded like it was coming from the passenger side back near the firewall.....i actually have a video of it because at the time i thought the bearings in the engine were dying so i was testing that.....(hopefully my soon-to-arrive oil analysis will get rid of that fear)
when i get home from work ill find the video and post it.....but could that be a faulty purge valve/solenoid/whatever?
if that's what caused my problem....could be of some use to the OP (that was my weak attempt to disguise any threadjacking)
when i get home from work ill find the video and post it.....but could that be a faulty purge valve/solenoid/whatever?
if that's what caused my problem....could be of some use to the OP (that was my weak attempt to disguise any threadjacking)
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03-26-2011, 09:49 AM
#11
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Year: 1998
Model: Cherokee
Engine: 6
Thanks for all the help!!!! I took it and did the "smoke" test and it turned out to be the seal around the fuel pump
Most places I called charge $50 for just the test.
