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Lack of power

Tiny
JUDYJRM
  • MEMBER
  • 2002 CHEVROLET MALIBU
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 135,000 MILES
I have a chevy malibu it has lost between 40 to50 now it has no power going up hills and little power as long as it stays under 40. The egr has been replaced the fuel presser is 50
Monday, January 17th, 2011 AT 8:27 AM

3 Replies

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.
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 it
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Monday, January 17th, 2011 AT 9:30 AM
Tiny
JUDYJRM
  • MEMBER
  • 6 POSTS
The fuel pressure was 50 cat has check out replaced EGR valve
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Monday, January 17th, 2011 AT 9:39 AM
Tiny
JUDYJRM
  • MEMBER
  • 6 POSTS
The cat check out ok the fuel pressure was50 and they replaced the egr vavle and they still dont know what wrong
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Monday, January 17th, 2011 AT 9:56 AM

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