Truck********

Tiny
BENZARCH
  • MEMBER
  • 1989 FORD BRONCO
  • V8
  • 4WD
  • AUTOMATIC
After drivng my 89 Bronco for 15 - 25 minutes the truck will suddenly stutter, ***** or buck like the truck is popping in and out of gear. It will do this every minute or so until I stop, let it cool down and then it starts again once it warms up again
Sunday, February 6th, 2011 AT 6:44 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light on?

If the tranny is not slipping your possibilities are as follows:

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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Tuesday, March 22nd, 2011 AT 3:01 AM

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