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Loss of power

Tiny
CHRISIRWS
  • MEMBER
  • 1991 NISSAN TRUCK
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 350,000 MILES
1991 Nissan pick up 4 cylinder. Starts with no problem, but when it gets close to being operating temperature, she loses power, not respond well.
changed fuel filter, checked all hoses.
Friday, February 18th, 2011 AT 7:59 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be caused by one of the following below

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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Friday, February 18th, 2011 AT 8:08 PM

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