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1990 Toyota Corolla no power

Tiny
BONSUSO
  • MEMBER
  • 1990 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 224,000 MILES
The car starts and runs. It used to shake when going faster then 55miles. Recently it doesn't even go past 20mph. The accelarator pedal, when fully stepped on it still doesn't go beyond 20mph. People tell me it's the gas and another guy with the same car said it was a tune up that I needed. With the shaking I was told I need a wheel balancing. But I am more concerned with the lack of power.I know you guys can help me out.
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Sunday, May 9th, 2010 AT 10:42 AM

2 Replies

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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Monday, May 10th, 2010 AT 6:41 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Take the convertor off and look inside, if melted or cracked, then convertor is problem.
Convertor is bolted on.
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Monday, May 10th, 2010 AT 8:49 AM

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