1998 Ford Ranger 4.0

Tiny
SCOOTER3333
  • MEMBER
  • 1998 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
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
Wednesday, July 27th, 2011 AT 11:44 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Wednesday, July 27th, 2011 AT 11:54 PM
Tiny
SCOOTER3333
  • MEMBER
  • 2 POSTS
Yes it has both bank o2 sensors slow to respond motor was rebuilt maby 6000 miles ago and have a cylinder 2 misfire
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Thursday, July 28th, 2011 AT 1:29 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check sparkplug, compression and injector for cyl. No.2
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Thursday, July 28th, 2011 AT 9:42 AM

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