1990 Ford Bronco Repair Question
Asked on April 14, 2010
1990 Ford Bronco HESITATION
Engine Performance problem
1990 Ford Bronco V8 Four Wheel Drive Automatic 158000 miles
I replaced Idle control valve it ran better but still bogging down so i replaced pcv valve rotar and cap. i also replaced both air filter. ran great for a few miles except for a little hesitation to start out but now it back where i started. Hesitation when i start out and while i drive now. THANKS NATE
1990 Ford Bronco V8 Four Wheel Drive Automatic 158000 miles
I replaced Idle control valve it ran better but still bogging down so i replaced pcv valve rotar and cap. i also replaced both air filter. ran great for a few miles except for a little hesitation to start out but now it back where i started. Hesitation when i start out and while i drive now. THANKS NATE
Asked by NATHANSALAnswer
Replied on April 14, 2010
Lack of acceleration,chugging,hesitating,bogging etc. could be caused by one of the following below.
Inspect and test all the following listed below and get back with some results
Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position 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.
