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is this common after a LS6 intake install??

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Old Jun 18, 2006 | 06:43 PM
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Default is this common after a LS6 intake install??

ok i just installed a LS6 intake on my car with the egr mod and afterwards now my car surges and idles at about 1100 rpm...i know this usually happens if you have a air leak somewhere but i have checked everywhere and i dont see where it could be leaking from..I also installed a ported TB so i dunno maybe that could be causing it..so has anyone else experienced this??
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Old Jun 18, 2006 | 07:19 PM
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Put your stock TB on and see if it stops. I'd check to make sure the IAC o-ring is in place (top plug on the tb over on the driver side.
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Old Jun 18, 2006 | 07:54 PM
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Not sure, but it's common after a throttle body install, which if I understand correctly you did at the same time.

Usually the computer will relearn the idle after some time. If not, you can try the 'manual' idle relearn process, search for those terms and it should come up quick.
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Old Jun 18, 2006 | 08:30 PM
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surging is not what is supposed to happen after an intake swap.
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Old Jun 18, 2006 | 09:31 PM
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Ummm...Yeah. Agreed. Check to make sure you dont have your throttle blade stuck open, or any leaks where you installed the manifold.

Originally Posted by brad8266
surging is not what is supposed to happen after an intake swap.
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Old Jun 19, 2006 | 04:10 AM
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adjust the screw on the ported tb if it isn't the same one that was on the car before
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Old Jun 19, 2006 | 09:51 AM
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o ok thanks guys..i am gonna put the stock throttle body on to see what happens..the ported one i have is just a stock ported one though. oh yeah i forgot to mention that it seems to get worse once the car heats up...when the car is cold it doesn't surge and idles normal but once it heats up the idle gets higher and it will occasionally surge

Last edited by quiet_storm98; Jun 19, 2006 at 10:08 AM.
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Old Jun 19, 2006 | 04:02 PM
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if that is not the problem, then you have a vaccum leak.
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Old Jun 19, 2006 | 10:36 PM
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well i put the unported TB back on and now the car is back to normal..i tried to search on how to do the manual idle relearn process but nothing came up...does anyone have a link or something to it??
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Old Jun 19, 2006 | 10:38 PM
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Originally Posted by daryl2cb@yahoo.com
if that is not the problem, then you have a vaccum leak.
+1 for vacuum leak. It happened on mine. I replaced the tb gasket and the problem went away...
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Old Jun 19, 2006 | 10:43 PM
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ok i found the relearn process so i am gonna put it back on and see if the car can relearn the idle..thanks for your help guys
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Old Jun 20, 2006 | 08:50 AM
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Im also gonna say vacuum leak. Is your PCV setup still installed?
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Old Jun 20, 2006 | 09:07 AM
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Originally Posted by quiet_storm98
ok i found the relearn process so i am gonna put it back on and see if the car can relearn the idle..thanks for your help guys
Did you check to see if the O-ring was in the IAC on the new TB?
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Old Jun 20, 2006 | 09:08 AM
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Originally Posted by GuitsBoy
Im also gonna say vacuum leak. Is your PCV setup still installed?
yeah it is still installed but after i put the stock one on it is fine now..i am gonna put the ported one back on today and see if the idle relearn process will help..by the way what part of long Island are you from?? My bro lives there and i was born there so i visit there sometimes
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Old Jun 20, 2006 | 09:09 AM
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Originally Posted by TheBlurLS1
Did you check to see if the O-ring was in the IAC on the new TB?
umm it looked the exact same as my stock one but i didn't really notice, i will check today
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Old Jun 20, 2006 | 09:12 AM
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Originally Posted by TheBlurLS1
Did you check to see if the O-ring was in the IAC on the new TB?
i didn't really look but i will check once i put it back on today
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Old Jun 20, 2006 | 10:35 AM
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ok i checked everything when i put it back on and everything looks fine..i also di the idle relearn procedure and the car is still not idling right I have no idea at all why...i dont see where it could be leaking from or anything so i guess i will just throw the stock one back on again
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Old Jun 20, 2006 | 10:40 AM
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Originally Posted by quiet_storm98
by the way what part of long Island are you from?? My bro lives there and i was born there so i visit there sometimes
Im out in medford. Exit 63 off the L.I.E.

You did have the rubber o ring gaskets in there, right?
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Old Jun 20, 2006 | 02:10 PM
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im picking up a ls6 manifold this week hopefully, did you notice an immediate difference after the install?

Thanks
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Old Jun 21, 2006 | 11:07 AM
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Originally Posted by GuitsBoy
Im out in medford. Exit 63 off the L.I.E.

You did have the rubber o ring gaskets in there, right?
yeah it had everything..i did notice that the hole that feeds air to the IAC sensor is smaller on the ported one though because there is a piece that covers that area on the ported one so i believe that may be the problem..i am gonna try to get that piece off and bolt it back one and see what happens..but anyway my Bro lives out in uniondale so i dont know how far that is from you..he also had an f-body but had to sell it for financial reasons
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