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P0442 & P0455 codes

Tiny
JOL978
  • MEMBER
  • 2001 FORD EXPLORER
  • V8
  • AWD
  • AUTOMATIC
  • 150,000 MILES
I have an 01 ford explorer V8 and have been getting P0442 code then changed the gas cap 5 times (all from ford) and still get the code. The vechicle revs high about 1500 rpms at start up (hot or cold) and after about 5 minutes of letting it warm up it drops to 750 rpms and can be driven without a problem. Now I have been also getting a P0455 code if I drive it without letting it warm up but I never get both codes at the same time.
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Friday, July 8th, 2011 AT 6:59 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
These are evap codes. There is alot more to the system than a gas cap.
You need a shop with a scan tool and a smoke machine. The scan tool will manipulate all the solenoids for operation and the smoke machine will identify any leaking areas that need to be repaired. Not a repair you can do at home unless you have the tools.

Roy
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Friday, July 8th, 2011 AT 8:25 PM

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