1996 Ford F150 emissions code po446

1996 FORD F-150
86,000 MILES • 6 CYL • 2WD • MANUAL
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RANDALL GOBEL
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  • 5 POSTS
truck runs great 95% of time. occassionally on start up at normal operating temp, will run rough for about 10 seconds then smooth out and run great. Also seems to be a little hard on gas. Have tried changing various parts, @ vcv, canister purge valve solenoid, checked for vacuum leaks and somewhat inspected vapor canister without removing it. Any ideas?
Jun 4, 2010 at 4:30 AM
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RASMATAZ
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Clean out the idle air control valve and see what happens-also clean the mass airflow sensor with an approved cleaner
Jun 4, 2010 at 7:00 AM