P0442 & P0455 codes

2001 FORD EXPLORER
150,000 MILES • V8 • AWD • AUTOMATIC
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JOL978
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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.
Jul 8, 2011 at 6:59 PM
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ASEMASTER6371
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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
Jul 8, 2011 at 8:25 PM