2000 Toyota Corolla wont run properly

Tiny
ORSKOV05
  • MEMBER
  • 2000 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 147,890 MILES
Cant get to run right it will start it will run and idle just barely if you give it gas it will try to stall and if you let up it stays running its weird cause you would think it would just stall. Ive have good fuel pressure good spark at all 4 cylinders good compression changed spark plugs fuel pump fuel injectors computer.
Saturday, November 21st, 2009 AT 4:58 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Oxygen sensor
Catalytic converter
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
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Saturday, November 21st, 2009 AT 5:21 PM
Tiny
ORSKOV05
  • MEMBER
  • 7 POSTS
Dosnt have wires direct coil to plug setup already replaced plugs coils are all good
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Saturday, November 21st, 2009 AT 8:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the idle air control valve/mtr/ISC and TPS
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Saturday, November 21st, 2009 AT 8:43 PM

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