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1991 Toyota Corolla Slow acceleration especially going uphi

Tiny
BAZZMAN
  • MEMBER
  • 1991 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
Hi there, my car seems to have very slow acceleration especially going uphill. Other than that it drives fine. The exhaust has been changed 1 yr ago. Before I bought it a week ago, it was very seldom driven. Any ideas?
Saturday, February 13th, 2010 AT 5:59 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below:

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)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Cap and rotor

Note:If it doesn't apply disregard.
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Saturday, February 13th, 2010 AT 6:12 PM

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