Mechanics

ENGINE RUNS ROUGH, LOW POWER

1990 Toyota Corolla

Engine Performance problem
1990 Toyota Corolla 4 cyl Front Wheel Drive Automatic 255K miles

Engine idles rough, engine runs better at higher RPM in park, but runs rough even at high RPM when driving.
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Johndc12
August 20, 2010.



Check and test the airflow meter, throttle position sensor and EGR valve to include the fuel pressure

Rasmataz
Aug 20, 2010.
If you have a check engine light, short Te1 and E1 in diagnostic connector under hood. Light will flash code.

Mmprince4000
Aug 21, 2010.