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1999 Mazda Protege Power

Tiny
THLORENZEN
  • MEMBER
  • 1999 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • MANUAL
  • 120,000 MILES
The engine lite has been on for two years but running fine. Yesterday to my disbelief the engine lite went off and it's running poorly. Insane.
When I change gears there's some hesitation. Yesterday on the highway in 5th gear the car was actually losing power and slowing down and I had to downshift into 4th?
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Wednesday, March 10th, 2010 AT 2:13 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Thursday, March 18th, 2010 AT 11:18 PM

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