Hesitation under moderate acceleration - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-06-2006, 06:01 PM   #1
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Default Hesitation under moderate acceleration

Hey guys,

Big Bertha has had some troubles, nothing major, she seems to be hesistating after a long drive or a long trip in town, like I'll gas it a bit to turn or take off, she won't move as much as she should, then I get pissed and floor it and same thing then a second later, Big Bertha rockets off then I have to take my foot off the gas, I often thought it was the transmission but there'* no noise of any kind.

Then today I was watching "Two Guys Garage" and I saw that they said "Oh when this throttle body is nice and clean, it'll rid of the hesistation." I immediately thought of Big Bertha, could her throttle body be dirty? Is this the solution?
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Old 02-06-2006, 06:05 PM   #2
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Default Re: Could this be the Solution?

Quote:
Originally Posted by fuelforthesoul1999
Hey guys,

Big Bertha has had some troubles, nothing major, she seems to be hesistating after a long drive or a long trip in town, like I'll gas it a bit to turn or take off, she won't move as much as she should, then I get pissed and floor it and same thing then a second later, Big Bertha rockets off then I have to take my foot off the gas, I often thought it was the transmission but there'* no noise of any kind.

Then today I was watching "Two Guys Garage" and I saw that they said "Oh when this throttle body is nice and clean, it'll rid of the hesistation." I immediately thought of Big Bertha, could her throttle body be dirty? Is this the solution?
Ask yourself..when was the last time you cleaned it. That'll give you the answer you are looking for on...could it be the issue.
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Old 02-06-2006, 06:07 PM   #3
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powder coated...i think NOT...

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Old 02-06-2006, 06:11 PM   #4
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i agree a good TB cleaning cant hurt you
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Old 02-06-2006, 06:22 PM   #5
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Please title your threads to something more relevant to the thread content.

I had the exact same issue with our 99. I cleaned the throttle body and it didn't improve. The problem ended up being a weak fuel pump. It couldn't keep up with demand. New pump, no more problems!
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Old 02-06-2006, 06:48 PM   #6
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Mark, sorry I didn't think all the way about the title, I just got excited because I thought I finally found the problem. This "hesistation" has almost caused me to be t-boned a few times so...

I'll clean the throttle body when it'* just a tad warmer (it'* below freezing now) and I'll check into the price of a new fuel pump. Is remanufactured or brand new better which one?
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Old 02-06-2006, 06:50 PM   #7
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Quote:
Originally Posted by fuelforthesoul1999
Mark, sorry I didn't think all the way about the title, I just got excited because I thought I finally found the problem. This "hesistation" has almost caused me to be t-boned a few times so...

I'll clean the throttle body when it'* just a tad warmer (it'* below freezing now) and I'll check into the price of a new fuel pump. Is remanufactured or brand new better which one?
im guessing that you have not checked the fuel pressure via a mechanical gague
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Old 02-06-2006, 06:53 PM   #8
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Quote:
m guessing that you have not checked the fuel pressure via a mechanical gague
You guessed right. I assume I should do that first before I waste any money. Okay will do that when it gets warmer or I have access to a spacious heated garage.
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Old 02-06-2006, 09:08 PM   #9
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Fuel...

Get yourself a fuel pressure gauge..extend the hose like I did..and drive around watching the pressure. It'* the best test.
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Old 02-07-2006, 01:24 PM   #10
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4 out of 5 dentists agree...

Clean your throttle body AND do your fuel pressure test before looking too much farther.
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