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Old 10-28-2007, 06:06 PM   #1
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Default Problems with the booneville hesitating

I have problem where my 2005 booneville will just hesitate. I can't figure it out.
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Old 10-28-2007, 10:03 PM   #2
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Is your SES on?

Anytime i have ever had a hesitation it was from the front O2 sensor.
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Old 10-28-2007, 11:14 PM   #3
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A little more information would be helpful. When does the car hesitate? Driving on the highway? From a stop? When cold? When warmed up? Any maintenance done to the vehicle? Also, would you put the year of your vehicle, along with your trim level in your profile? It helps if we know which engine we're dealing with.
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Old 10-29-2007, 02:36 AM   #4
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#6 plug wire touching the front O2 sensor, bad plugs/wires? That'* one of the first things I changed when I bought mine a couple weeks ago.
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Old 10-29-2007, 11:35 AM   #5
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I just had the same problem with my 01 SSEI when i would hit the gas pedal to get up tp speed the car would hesitate and i changed the plugs and wires and it stoped doing it. Like he said check the spark plug wire in the back mine was cracked .
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Old 10-31-2007, 05:32 PM   #6
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Mine starts hesitating(misfiring) about every 10-20k miles. I just replace the wires. You may need to replace your plugs as well. Also, I have found that sometimes simply using a bottle of fuel system cleaner will resolve the hesitation.
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Old 11-03-2007, 08:59 PM   #7
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My 2000 had a hesitation problem. I performed a throttle body service and removed and cleaned the fuel injectors. The injectors, in my case, were the cause of the problem. They were really gunked up after 125k on them.

I would recommend checking the plugs for signs of fouling. Make sure your wire heat shields are in place as well.

You might want to take it to a shop that performs the 3-step fuel system service. My shop offers one called Run-Right. Valvoline also makes one. They're very effective.
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Old 11-16-2007, 02:47 PM   #8
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I have the same question; our 2001 SSEi will start to surge on light acceleration above 35mph. Replaced the spark plugs and wires, no better. (ACDelco parts) Replaced 1 coil, no change. Moved it to each position and never changed. Unplugged the EGR valve, no change. Unplugged the maf, seems to be gone 95% of the time. If it is the maf, why only at part throttle like a secondary miss?
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