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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 01-16-2012, 06:36 PM   #1
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Angry having problems uggh hate it

im having problems with my car
it feels like if it needed some new spark plugs but i already changed them all new and it still not working fine..
i ran the onstar diognostics and they told me i was having problems with the oxygen sensors with all four of them front and rear. but my tuner already turned the rear off so i dnt get it. i have some headers so all i did with the front sensors were just made them longer. also they said something the solenoid valve thats in the gas tank or near the gas tank but i dont get it either. :/
anyone having those problems ? ? ?
i really need help thanxx guys
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Old 01-16-2012, 07:13 PM   #2
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Check you maf, maybe you are running off triggering the o2s. You cant just extend the o2s they need to be tuned for the lower operating temp with headers. If you have a tune, then talk to your tuner. Most likely a small glitch from him
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Old 01-16-2012, 07:20 PM   #3
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Are you getting a Check Engine Light? If so what is the code.

I recently had kind of a similar issue. The car was running ok but I got a CEL about being too lean. Ended up being a vaccum leak caused from my catch can. Check your MAF connection or CAI connection or catch can if you have one.
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Old 01-16-2012, 07:27 PM   #4
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ok wats a MAF?
i dont have a catch can.
when i had the check engine light it showed me a leak from some where
...
my tuner said something similar parag he said something that the extension and that the sensor needed some temp.
thanxx guys for the help
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Old 01-16-2012, 08:38 PM   #5
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Do you have an aftermarket Cold Air Intake?
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Old 01-16-2012, 09:14 PM   #6
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Quote:
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Do you have an aftermarket Cold Air Intake?
yea vararam.
i checked the maf sensor and its a "weak" one.
idk if thats the problem or not
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Old 01-16-2012, 09:28 PM   #7
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I an willing to bet you have two issues...1- you need a strong MAF, when you add an intake it actually makes the car run like crap. At idle mine soundedlike it was missing and it didnt feel like it was all there under load. 2- the oxygen sensor issue...Check your clamps on your intake, at the throttle body and at the filter. Mine were just a little loose and it threw codes for p0171 and p0174 both banks lean. I was loosing my mind!!! 5 minute tighten job, and a strong MAF and my bet is you will think its a new car.
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Old 01-16-2012, 09:29 PM   #8
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I would definately start there and replace it. Hopefully that will fix the problem
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Old 01-16-2012, 09:34 PM   #9
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MAF is a likely problem. Your "tuner" should have picked up on this. Also I'd look on finding a different mechanic/tuner. Friendly hint- when asking for help please list all performance mods. Helps to be able to point you in the right direction.
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Old 01-16-2012, 09:35 PM   #10
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Quote:
Originally Posted by jcollins91106 View Post
I an willing to bet you have two issues...1- you need a strong MAF, when you add an intake it actually makes the car run like crap. At idle mine soundedlike it was missing and it didnt feel like it was all there under load. 2- the oxygen sensor issue...Check your clamps on your intake, at the throttle body and at the filter. Mine were just a little loose and it threw codes for p0171 and p0174 both banks lean. I was loosing my mind!!! 5 minute tighten job, and a strong MAF and my bet is you will think its a new car.
thanxx yea at idle it sounds like if it had a cam but it doesnt :/
sucks
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Old 01-16-2012, 09:51 PM   #11
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exactlylike mine...sounded almost good but no bueno at WOT
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Old 01-17-2012, 12:02 AM   #12
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Just installed the maf strong sensor and nope nothing.
Man im getting so pissed off I rather put everything back to stock and turn in the car for a new cts-v !
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Old 01-17-2012, 12:33 AM   #13
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Then you need to check all of your hoses from the Vararam to the intake. Sounds like a vaccum leak to me. Double check the whole install of the intake. Worst case would be to put the stock intake back on. If problems go away then at least you've narrowed it down to the intake.

BTW: how did you get a new MAF so quick? And what is the code on the side of the MAF?
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Old 01-17-2012, 12:36 AM   #14
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I went to O'Reilly's auto parts cost me 64$ with the sensor trade. The new sensor says k7 and the old one said the letter v only
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Old 01-17-2012, 12:39 AM   #15
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Sounds correct.

Start looking for a vaccum/air leak.
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Old 01-17-2012, 12:43 AM   #16
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I guess man cuz I'm getting tired of this. I really don't wanna get rid of my camaro
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Old 01-17-2012, 12:58 AM   #17
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It's not worth getting rid of your Camaro by any means. Trust me I know how frustrating the little grimlins can be. I fought my CEL for about 3 long months. Sometimes I would get a CEL, then I wouldn't. Then I would go two weeks without anything and then it would come back. Each time I had to go down to Auto Zone and borrow their code reader to clear it. Had it on the rack at least 3 different times checking for exhaust leaks and switching out O2 sensors. All to finally find out that the drain plug in my oil catch can was not completly tight. It was slightly open and was causing a vaccum leak and thus the CEL. I had to finally throw in the towel and take it to Andy at ADM. He found it in about 30 min.

Again, look at your intake. If you have to, switch it back to stock. Shouldn't take you that long and you can start to narrow it down.

I'm going to assume you didn't buy the car running like that so think about the changes you've done. What was the last thing you can remember doing to the car before it started having issues.

Are you getting a CEL? If so, go read the code and find out what it says.
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Old 01-17-2012, 01:05 AM   #18
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I don't have the cel on. The last thing I did was put on the headers. Ima check the oxygen sensors tomorrow tho.
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Old 01-17-2012, 01:08 AM   #19
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Check to make sure the exhaust and Cats are put on nice and tight as well.

Did you put the headers on yourself? If so, did you remove the spark plugs before doing so? I've seen a handfull of threads where guys put on their own headers, didn't remove the spark plugs first, accidentally hit a plug and cracked it. They are supposed to be fairly fragile from what I've read.

Issue could be from the car missing. Make sure your wires are put on nice and tight as well.

I would've thought that if the car was missing enough to sound like it has a cam that it would throw a CEL.
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Old 01-17-2012, 09:58 AM   #20
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Yea my brother in law installed them. He broke a coil and a spark plug. But I already replaced them all new.
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Old 01-18-2012, 03:14 PM   #21
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ok i went with best mechanic in south texas and found that it was a vacuum leak due to the oil breather filter thath i needed to eliminate some other vacuums. now everythign its solved. i just replaced the original oil cap.
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Old 01-18-2012, 03:31 PM   #22
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Quote:
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ok i went with best mechanic in south texas and found that it was a vacuum leak due to the oil breather filter thath i needed to eliminate some other vacuums. now everythign its solved. i just replaced the original oil cap.
Ahh, heard this before..... oil breather without the valve will let unmetered air in. Happy to hear you resolved your problem
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Old 01-18-2012, 03:56 PM   #23
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Cool. Glad you got it figured out.

Hate it when you do all sorts of searching and stuff then take to a pro and they figure it out in no time. At least that's what happened to me.
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Old 01-18-2012, 04:06 PM   #24
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yep in less than five minutes the guy tolda what it had jajaja
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Old 01-18-2012, 05:04 PM   #25
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Very glad to hear you found out what the problem was. It is amazing how something so simple can cause so many problems.
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