Hesitation worse when going up hill more of a mis then a hesitation

Tiny
PAINTERED
  • 2004 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 106,000 MILES

No engine lite and now there is a nocking sound coming from the rear when I go up hill?

Do you
have the same problem?
Yes
No
Wednesday, July 13th, 2011 AT 5:34 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER

Could be one of the following below -check and test:

Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.

Was this
answer
helpful?
Yes
No
Thursday, August 11th, 2011 AT 10:22 AM

Please login or register to post a reply.

Other Engine Hesitate Questions