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#1 |
![]() Drives: 2022 Camaro ZL1 Join Date: Aug 2012
Location: Crystal Lake, IL
Posts: 42
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shake and vibration on cold start
Is it a normal characteristic for a ZL1 to have a shake to it on a cold start and idling. It is like an old muscle car with a mild cam lope. My Sierra is also a 6.2 but idles perfectly smooth.
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#2 |
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Petro-sexual
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Mine did a little on a cold start. I swear I remember people stating they experienced it, too, like it was just an LT4-thing, and normal.
Mine does it more so, now, probably because I'm running a colder spark plug though, as the misfires go away after a minute of running, or so.
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'20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs |
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#3 |
![]() Drives: 2022 Camaro ZL1 Join Date: Aug 2012
Location: Crystal Lake, IL
Posts: 42
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Mine has done it since I bought new last July. I just put a Corsa Extreme on and it seems like the rough lopy idle is more noticeable now but once oil temp is 200 it smooths out but still has a slight shake.
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#4 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,869
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My 2017 is the same way too until the engine starts warming up!
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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#5 |
![]() Drives: Camaro ZL1 1LE M6 Join Date: Mar 2023
Location: SoCal
Posts: 36
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Same with my 22.
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ZL1 1LE
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#6 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 2023 Black ZL1 Auto Join Date: Oct 2009
Location: FEMA Region 4
Posts: 2,936
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I think the software and the wide band O2 in the C8 finally eliminated the slightly rough idle in the LT engines
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