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2005 Toyota Highlander UPHILL POWER

Tiny
LOPAKABOB
  • MEMBER
  • 2005 TOYOTA HIGHLANDER
Engine Performance problem
2005 Toyota Highlander 4 cyl Four Wheel Drive 140000 miles

I just replaced the sparks and airfilter and still lacking power asending hills. Any suggestions?
Tuesday, April 6th, 2010 AT 6:40 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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Wednesday, April 7th, 2010 AT 12:01 AM

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