1999 Toyota Echo engine check light is on

1999 TOYOTA ECHO
39,000 MILES • 4 CYL • FWD • AUTOMATIC
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ADRIAN85991
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hi,
my car has an engine check bulb and it lights up on some occasions for example when going up a hill .
the car has poor accelaration . when i press the gas pedal , the car doesnt respond instanly.

i think it is from the air flow sensor but i need a second opinion from you guys .

thanks for your help, and keep up the good work.
Jul 9, 2010 at 2:44 PM
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RASMATAZ
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  • 75,992 POSTS
Lack of acceleration,chugging,hesitating,bogging etc. 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
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
Jul 9, 2010 at 3:08 PM
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NATHAN300
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i checked and changed all oils and filters fom the car . i just made a service . but the problem still remains ( poor accelaration and engine not responsive and poor idle. the check engine light will light up randomly esspecially when i go up a hill.
my mechanick told me that the problem is probably coming from the air flow sensor , and it needs to be replaced.
what do you think?

thanks again
Jul 9, 2010 at 3:23 PM
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RASMATAZ
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If he scanned it for code/s and it came up with the airflow sensor-clean it and see what happens
Jul 9, 2010 at 3:34 PM
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NATHAN300
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ok , thanks for your help. great job!
Jul 9, 2010 at 3:38 PM