1986 Bronco stumbles on acceleration

Tiny
SKITISH
  • MEMBER
  • 1986 FORD BRONCO
  • V8
  • 4WD
  • MANUAL
  • 50,000 MILES
86 bronco, 302. It stumbles on acceleration from about 2500 RMP and up. But dose not do it on decell
Friday, April 8th, 2011 AT 11:30 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 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.
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Saturday, April 9th, 2011 AT 12:05 AM

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