1992 Ford F150 bad fuel mileage, sluggish, stalling

1992 FORD F-150
23,000 MILES • 6 CYL • 2WD • MANUAL
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RODKIMB004
  • MEMBER
  • 1 POST
truck replaced o2 sensor, coolant temp sensor, fuel and air filters. has 2 fuel tanks, but prior owner disconnected one and shut off lines to it. vehicle will start and when you drive down the road it will start running sluggish and eventually stall. Sometimes the fuel pump runs constantly with switch in on position and sometimes it buzzes momentarily and operates normally. any idea where my problem could be.
Thanks,
Rodney
Jan 10, 2008 at 7:31 PM
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BLACKOP555
  • CAR REPAIR CONTRIBUTOR
  • 10,386 POSTS
change your relay, if that does not remedy you may need a new fuel pump.
Jan 10, 2008 at 8:44 PM
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