Sputtering on grades

1986 FORD BRONCO
8,000 MILES
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DABIGMOOSE
  • MEMBER
  • 1 POST
Whenever I hit a grade over about 10% it starts bucking as I give it gas to accelerate, and I gradually have to let off the gas as the rpms fall to keep it running smooth.
Oct 20, 2011 at 10:10 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Could be caused by one of the following below

Oxygen sensor.

Catalytic converter.

Fuel injectors dirty/sticking.

Mass airflow sensor/Airflow meter.

Throttle position sensor.

Crankshaft position sensor

Knock 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 it and keep testing
Oct 28, 2011 at 2:32 AM
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