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Hesitation problems

Tiny
KWAYNE86
  • MEMBER
  • 1994 PONTIAC FIREBIRD
  • 130,000 MILES
I have a 95 firebird with the corvette LT4 v8. Since I bought it ive had hesitation problems when accelerating, it gradually got worse I can floor the gas pedal and it takes 10 seconds to catch up. Ive replaced the fuel pump, oxidation and intake sensors still no luck. After it gets to 4th gear I can feel the car bogging down as I drive. I dont know whats wrong, please help me!
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Saturday, September 3rd, 2011 AT 10:37 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You sure tranny ain't slipping if not follow below

https://www.2carpros.com/articles/engine-hesitates

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
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 it and keep testing
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Saturday, September 3rd, 2011 AT 11:06 PM

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