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2001 Ford F-150 Repair Question


Topics covered: Sensor, Vacuum leak, Four wheel drive.
Mileage: No information provided.

Asked on July 15, 2010

2001 Ford F150 misfire or vacuum leak?

Smells problem
2001 Ford F150 V8 Four Wheel Drive Automatic 260,00 miles

Truck began to misfire, sputter while driving, idle really rough, loss hp. So i go to auto zone, they hook up the little tester, "misfire #7". I replaced the coil, problem solved. 2 weeks later, the same symtoms happen again. loss hp, shaking, idle rough, sputtering when i drive. so i go back to auto zone today to hook up the tester again. He said it read.."lean on 6,7,& 8. He told me i have a vacuum leak, not a bad coil. What do you suggest
Avatar Asked by eddie kelly

Answer

Replied on July 15, 2010

Could be one of the following below:

1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.

Tiny Answered by rasmataz
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