1988 Ford Bronco Repair Question
1988 Ford Bronco idles rough at 4000 rpm's
1988 Ford Bronco 6 cyl Four Wheel Drive Automatic
I have a 1988 ford Bronco II 2.9 Fuel Injected.
It runs good until you hit between 3-4000 rpm's. Then it acts like it's not getting enough gas. I have replaced the fuel pump and the filter. Thanks for any advice you have. We are trying to fix this for our daughter to drive.
Possibilities: Inspect and test all the following listed below:
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
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.
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