stumped 89 4 runner

1989 TOYOTA 4RUNNER
80,000 MILES • 6 CYL • 4WD • MANUAL
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TIMHAZELBAKER
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  • 2 POSTS
have a 1989 toyota 4 runner runs good at idle but misses during drivin range runs reel good when the gas peddle is on floor v-6 with a standard trainy fuel injected any help?
Feb 1, 2011 at 7:40 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
You sure the clutch is not slipping? If not 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.
False air leakage.
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.
Feb 1, 2011 at 8:24 PM
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