Generation III Internal Engine 1997-2006 LS1 | LS6
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46MPH hesitation

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Old 09-22-2005 | 10:42 PM
  #21  
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no it doesn't have EGR. they were able to pass emmissions without it with a few other mods. newbs need to know the info b4 they post
Old 09-25-2005 | 10:23 PM
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I still think it has something to do with the PCV system
Old 09-28-2005 | 08:42 AM
  #23  
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I cleaned the EGR valve (used like 3/4 a bottle of carb cleaner) and MAF. I still get the hesitation, but not as much.
Old 09-28-2005 | 02:28 PM
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i get it too, I cleaned the IAC holes in the TB and it seemed to help it. Might wanna check if your IAC module is about to go out. my car just started this, im going down the list of possibles...IAC, MAF, Fuel Pump, and now new to the list EGR. I had a problem of Hard Cold & Warm starts but after cleaning the idler air holes she cranks right up.

Links to my posts

https://ls1tech.com/forums/texas-members/386096-idle-driving-issues-need-help.html

https://ls1tech.com/forums/fueling-injection/385968-idles-2000-rpm-s-more.html

maybe give some other views on the culprit.
Old 09-28-2005 | 03:49 PM
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Noobie question... whats a IAC?

im guessing idler air something?
Old 09-28-2005 | 03:53 PM
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Oh and i know i am pulling timing... I put a scanner on it. So i think that rules out a TPS issue?
Old 09-28-2005 | 03:55 PM
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Idle Air Control, its on the Driver side of your TB. Opens and Closes the Two holes inside your TB to control Idle. I hear sometimes they stick due to carbon and gunk. I Cleaned mine with some BG Intake cleaner and it helped a little.
Old 09-28-2005 | 04:04 PM
  #28  
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I have the same problem, a slight hesitation between 2500 - 3000 rpm will cleaning the maf and erg help?
Old 10-04-2005 | 04:19 PM
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any updates?
Old 10-04-2005 | 04:31 PM
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well I think my problem was bad gas
Old 10-04-2005 | 05:24 PM
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Same problem here. I thought it was due to me adding the Loudmouth II exhaust since I noticed it a couple days after I installed it. It only happens to me when I punch it from an on ramp to the interstate. Normal driving at 45-50 mph doesn't have the hesitation.

It's like I lose all my power for a bit but she slowly accelerates to 70 afterwards from about 45mph.

1st to last gear normal driving, no problems. If I'm in say 3rd or 4th then floor it to get on the interstate, she hesitates.
Old 10-05-2005 | 06:02 PM
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same problem here FLA02TA




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