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1991 Ford Ranger Fueling

Tiny
L_B_20044
  • MEMBER
  • 1991 FORD RANGER
Engine Performance problem
1991 Ford Ranger 4 cyl Two Wheel Drive Manual

Yes something is cutting fuel up and down when my truck is idle, the rpm hand doesn't work it's hesitant when I am driving I can't get anymore than 35 miles per hour I have replaced fuel pump and it still does the same thing I have trouble getting up hills it chokes up but you can stop it and hold the accelerator pedal and it will gradually picks up but when you are off of the accelerator it stops again.
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Saturday, April 10th, 2010 AT 1:23 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Saturday, April 10th, 2010 AT 3:32 PM
Tiny
L_B_20044
  • MEMBER
  • 2 POSTS
Ty will try
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Wednesday, April 28th, 2010 AT 8:59 AM

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