1997 Oldsmobile Achieva Map Sensor

1997 OLDSMOBILE ACHIEVA
150,000 MILES • 4 CYL • 2WD • AUTOMATIC
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MOUNTAIN2C540
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  • 3 POSTS
Yes my car Hesitates mainly when I first go to take off from a dead stop. I can Pat the gas pedal and it will straighten back out. I have no codes that are stored. I dont know what the problem is. The car idles perfect, only does it at take off.

Also where is the MAP sensor located on the 2.4, I was gonna check that but wanted some More input.
Aug 10, 2009 at 12:29 AM
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RASMATAZ
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  • 75,992 POSTS
Check all of these and comeback with some results

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
Aug 10, 2009 at 1:10 AM
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MOUNTAIN2C540
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  • 3 POSTS
Ok where is the Map sensor located/
Aug 10, 2009 at 2:54 PM
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RASMATAZ
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The MAP is on front top of engine
Aug 10, 2009 at 3:02 PM