1995 Pontiac Bonneville accelarator problem

PEGGY MONROE

MEMBER
1995 PONTIAC BONNEVILLE
6 CYL
4WD
AUTOMATIC
7,500 MILES

Hi my name is Peggy Monroe writing to ask that when I crank my car up and let it warm up it Idles High and then when I pull off mashing on the accelarator it halts and jerk. Once it catches up it will pull but continues to jerk. Now when I get to the highway stops and pulls off it halts like it don't want to pull but when I get on the gas it ildles down and have to catch up whilr I put my feet on the gas. I have to ciontinue to give it gas in order for it to catch up.

please respond.

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Inspect and test the idle air control valve and EGR valve and test the throttle position sensor and manifold absolute pressure sensor-to include a fuel pressure check.

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Sunday, March 7th, 2010 AT 4:03 AM

PEGGY MONROE

MEMBER
2 POSTS

1995 Pontiac Bonneville----Yes My name is Peggy Monroe writing in responds to your respond on my acceleration problem. And I have had the EGR Valve, Idle control vale and throttle positon, and all the sensors have been replaced as new. When I fiirst crank the car it Jerks and Idles up real high. When I put it in drive to pull off but it jerks and try to cut off and also takes off slowly while im giving it gas. Please help me if possible..

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Sunday, March 7th, 2010 AT 10:14 PM

RASMATAZ

MECHANIC
75,992 POSTS

Inspect and test all the following listed below. Its long give it shot-top to bottom

Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

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Monday, March 8th, 2010 AT 3:40 AM