1995 Geo Metro por accelaration

1995 GEO METRO
98,000 MILES • 4 CYL • FWD • AUTOMATIC
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NO1TINIERT
  • MEMBER
  • 3 POSTS
accelerates in park, but in drive it barely goes down the road, even when pushing on the gas pedal, doesnt have any power, and its not the transmission, if it dont accelarates,like some stupid mechs say?
Sep 15, 2009 at 11:46 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
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
Sep 16, 2009 at 4:44 AM
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