i have a 98 ranger and at about 70 mph it wants to miss out and now back pressure what can i do to solve this problem
Jul 27, 2011 at 11:44 PM
1998 ford ranger 4.0
1998 FORD RANGER
SCOOTER3333
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Do you have a check engine light and when was last tune-up??
Could be caused by one of the following below-Check it
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.
Could be caused by one of the following below-Check it
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.
Jul 27, 2011 at 11:54 PM
yes it has both bank o2 sensors slow to respond motor was rebuilt maby 6000 miles ago and have a cylinder 2 misfire
Jul 28, 2011 at 1:29 AM
Check sparkplug, compression and injector for cyl. no.2
Jul 28, 2011 at 9:42 AM
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