IonNinja Build - Page 11 - Cobalt SS Network

2.2L L61 Performance Tech 16 valve 145 hp EcoTec with 155 lb-ft of torque

IonNinja Build

Old 03-17-2013, 10:39 PM
  #251  
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Sounds like an exhaust leak to me.. Cause if it was internal your knock sensors would be cutting power and you would have a serious problem!
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Old 03-17-2013, 10:40 PM
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Originally Posted by armcclure View Post
Honestly it sounds like a cracked header combine through my iPhone speaker
My thoughts too, but not sure how changing an axle would cause it, I guess it could be a coincidence
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Old 03-17-2013, 11:15 PM
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actually, I did throw a knock sensor code when I drove it today. i'll have to pull the code when I get home
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Old 03-18-2013, 12:49 AM
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It's P0326 Knock sensor 1 circuit performance

also throwing P0171 System too lean (bank 1)

As of now though the knock sensor CEL has turned off

Last edited by IonNinja; 03-18-2013 at 02:53 AM.
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Old 03-18-2013, 02:21 AM
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They said exhaust leak? Lmao, um no, heck no it doesnt
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Old 03-18-2013, 09:33 AM
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Originally Posted by IonNinja View Post
It's P0326 Knock sensor 1 circuit performance

also throwing P0171 System too lean (bank 1)

As of now though the knock sensor CEL has turned off
why do you have false knock?
did you upgraded your motor and tranny mount?
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Old 03-18-2013, 09:37 AM
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Upgraded trans mounts give u false knock?
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Old 03-19-2013, 01:25 PM
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So it's not an exhaust leak lol. Ran my OEM LSJ manifold with no downpipe and noise is still there.

The only thing left is something on the bottom end or I was even thinking a really fubar'd TOB. I just can't understand why either of those would cause the car to run lean. At idle my LTFT are like ~27

I'm lost =/
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Old 03-19-2013, 02:08 PM
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Originally Posted by turbosmart4 View Post
Upgraded trans mounts give u false knock?
yes it can
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Old 03-19-2013, 08:59 PM
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What's vacuum at,at idle?
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Old 03-20-2013, 12:58 PM
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19in. hg
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Old 03-20-2013, 01:22 PM
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is that coming from the blower? i recall some years back hearing a vid like yours and the guys blower was bad. in his case it was sold to him in that condition. i know i've been outta the game for a minute and i'm just trying to help.
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Old 03-20-2013, 02:38 PM
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no his is all motor noise. i would check out your bottom end and make sure nothing went bad down there
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Old 03-20-2013, 03:34 PM
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Seems a tad low. Mines at 20-21 ay idle. You may have a small leak causing the afr issue. As for the noise,id have to hear iit in person .
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Old 03-20-2013, 03:43 PM
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i wanna say its sc related ..not sure though. thats very odd noise lol
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Old 03-20-2013, 04:45 PM
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he took the belt off and started the car and it was there.. its got to be in the bottom end
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Old 03-20-2013, 11:32 PM
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Everything in the bottom end is new except crank main bearings.he's on stock clutch components with tons of miles.
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Old 03-20-2013, 11:37 PM
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Tob?
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Old 03-20-2013, 11:51 PM
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Possibly
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Old 03-21-2013, 08:02 AM
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i expect that. my stock clutch doesnt like the 2.8 at all. so i cant imagine his
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Old 03-21-2013, 03:29 PM
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Yea his clutch has been through tons of nitrous and now 2.7 pulley on e47
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Old 03-21-2013, 07:20 PM
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I haven't touched the car in 2 days but I'll check some other stuff today.

TOB was my second guess but other issues are throwing me off
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Old 03-22-2013, 06:11 AM
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So I threw the car on ramps and started it, then got underneath...its definitely coming from the engine FML

It sounds just like this to me
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Old 03-22-2013, 08:07 AM
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well i would say crank bearings since its the only thing you havent really replaced. but double check and make sure those rod bearings didnt go
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Old 03-22-2013, 09:42 AM
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Well ninja if it makes you feel any better I have a spare crank that's good and main bearings are only 30 bucks. The crank is 2.2 anything pre 07
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