1992 Toyota Celica Lean Air/Fuel fault code, engine hesitat

Tiny
POZOBYT
  • MEMBER
  • 1992 TOYOTA CELICA
Engine Performance problem
1992 Toyota Celica 4 cyl Front Wheel Drive Automatic

My check engine light comes on around 55 mph and goes off when I stop, it's throwing a code 25 (lean air/fuel mixture) I just got a full tune up a month ago, I have cleaned the IAC, replaced the TPS, My fuel pump is good. When I accelerate, my car also hesitates, I can push the pedal all the way to the floor, and it takes a second for it to respond, and when it does respond, it still doesn't have the power that it should have. What could be causing this?
Monday, April 26th, 2010 AT 1:08 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi pozobyt, Welcome to 2carpros and TY for the donation

Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks
2. EGR and PCV valve.
3. Low fuel pressure.
4. Dirty fuel injectors.
5. Mass Air Flow Sensor.
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Tuesday, April 27th, 2010 AT 2:59 AM

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