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1999 Toyota Echo engine check light is on

Tiny
ADRIAN85991
  • MEMBER
  • 1999 TOYOTA ECHO
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 39,000 MILES
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.
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Friday, July 9th, 2010 AT 2:44 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 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
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Friday, July 9th, 2010 AT 3:08 PM
Tiny
NATHAN300
  • MEMBER
  • 30 POSTS
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
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Friday, July 9th, 2010 AT 3:23 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If he scanned it for code/s and it came up with the airflow sensor-clean it and see what happens
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Friday, July 9th, 2010 AT 3:34 PM
Tiny
NATHAN300
  • MEMBER
  • 30 POSTS
Ok, thanks for your help. Great job!
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Friday, July 9th, 2010 AT 3:38 PM

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