problems after LS6 intake install
problems after LS6 intake install well she idles fine, but the car seems like shes flooding up in the lower RPMS. Any ideas??? Maybe I have a bad plug or so.. going to atap them now
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Joined: Aug 2002
Posts: 4,055
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From: Hartsdale, NY
Re: problems after LS6 intake install You probably have a vacuum leak. Check the vacuum hose at the back of the manufold. If that does not work, pull off the manufold and check the rubber gaskets that cover the intake ports.
Re: problems after LS6 intake install well the hose was on and all the gaskets seem to be in tact so now what gives?? I think i over tq'ed some of the bolts so would that have a effect?
also i have my AIR unhooked but i have the codes for it turned off.
i did notice a few slight surges at idle, but nothing really unnormal. Mostly this prob was under slight throttle like the car was flooding up. Maybe i fouled a plug
also i have my AIR unhooked but i have the codes for it turned off.
i did notice a few slight surges at idle, but nothing really unnormal. Mostly this prob was under slight throttle like the car was flooding up. Maybe i fouled a plug
Re: problems after LS6 intake install </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by pekkaz:
<strong>AIR block offs well sealed also ?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">these are the plates on the headers right?? But yes they should be sealed perfectly. Well just like before all of this started anyway.
i dont have anything sealing the black tubes(i just pulled the checkairvalve off) that went to the header though. I can feel air blowing outta those.
<strong>AIR block offs well sealed also ?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">these are the plates on the headers right?? But yes they should be sealed perfectly. Well just like before all of this started anyway.
i dont have anything sealing the black tubes(i just pulled the checkairvalve off) that went to the header though. I can feel air blowing outta those.
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Joined: Mar 2002
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Re: problems after LS6 intake install Well, it's not that then. I was thinking if there was a possibility of air leaking into the header and messing with 02. If it is a vacuum leak and seriously messes with a/f then, dunno, maybe it could also set 02 code.
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From: O'Fallon-MO.
Re: problems after LS6 intake install I had a leak also on my LS6 intake.It was popping bad through the exhaust and you could hear it in the engine bay leaking.It ended up setting a SES light for running lean on bank one and two.Whatever that means.Make sure your Knock sensors wire are not in the way under there.I still have my intake off going through the same thing you are <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> good luck
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Verdad Gallardo TECH Apprentice
Joined: Jan 2002
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From: O'Fallon-MO.
Re: problems after LS6 intake install Thats cool,I hope you get it worked out.I'm looking at mine this weekend and its going back on tomorrow probally.Mine was OK at one time then over about 2 days it got worse so maybe i didn't have the bolts tight enough.
Re: problems after LS6 intake install </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by slick98ta:
<strong>Thats cool,I hope you get it worked out.I'm looking at mine this weekend and its going back on tomorrow probally.Mine was OK at one time then over about 2 days it got worse so maybe i didn't have the bolts tight enough.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">what exactly was your car doing?? Mine seemed to idle fine and thats why i ruled out a vaccum leak. But hell There could still be a little one.
<strong>Thats cool,I hope you get it worked out.I'm looking at mine this weekend and its going back on tomorrow probally.Mine was OK at one time then over about 2 days it got worse so maybe i didn't have the bolts tight enough.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">what exactly was your car doing?? Mine seemed to idle fine and thats why i ruled out a vaccum leak. But hell There could still be a little one.
Re: problems after LS6 intake install I seem to remember having to take off some stock clips or something so the intake manifold will seat properly by the knock sensors..also found my intake manifold bolts were very loose after a month or so..put some loctite blue on the front bolts..couldn't get to the back ones without taking the intake bascially off again..everything seems fine now..no codes..car runs great..you also can maybe pinch a line or leave one off on the back by the map sensor..I also have my map not plugged in right and it came loose..I got a code right away,car ran terrible and stalled out a lot..figured it out and all is good..sure is tight under those ls1 cowls..and sharp..I took some cutter or scissors forget now and cut almost all those little plastic pins/razor blades off and my hands have thanked me ever since.
Re: problems after LS6 intake install </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MY99TAWS6:
<strong>I seem to remember having to take off some stock clips or something so the intake manifold will seat properly by the knock sensors..also found my intake manifold bolts were very loose after a month or so..put some loctite blue on the front bolts..couldn't get to the back ones without taking the intake bascially off again..everything seems fine now..no codes..car runs great..you also can maybe pinch a line or leave one off on the back by the map sensor..I also have my map not plugged in right and it came loose..I got a code right away,car ran terrible and stalled out a lot..figured it out and all is good..sure is tight under those ls1 cowls..and sharp..I took some cutter or scissors forget now and cut almost all those little plastic pins/razor blades off and my hands have thanked me ever since.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">crap, i left those little clips on the knock wires also..... coulda cause a sealing prob from that maybe to! well i have the intake off so ill just snap those off <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<strong>I seem to remember having to take off some stock clips or something so the intake manifold will seat properly by the knock sensors..also found my intake manifold bolts were very loose after a month or so..put some loctite blue on the front bolts..couldn't get to the back ones without taking the intake bascially off again..everything seems fine now..no codes..car runs great..you also can maybe pinch a line or leave one off on the back by the map sensor..I also have my map not plugged in right and it came loose..I got a code right away,car ran terrible and stalled out a lot..figured it out and all is good..sure is tight under those ls1 cowls..and sharp..I took some cutter or scissors forget now and cut almost all those little plastic pins/razor blades off and my hands have thanked me ever since.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">crap, i left those little clips on the knock wires also..... coulda cause a sealing prob from that maybe to! well i have the intake off so ill just snap those off <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Re: problems after LS6 intake install </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by slick98ta:
<strong>I had a leak also on my LS6 intake.It was popping bad through the exhaust and you could hear it in the engine bay leaking.It ended up setting a SES light for running lean on bank one and two.Whatever that means.Make sure your Knock sensors wire are not in the way under there.I still have my intake off going through the same thing you are <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> good luck</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Slick: Whats up man! My Knock sensor wires are right under the intake in there normal stance(guess that makes sense). I thought one maybe had gotten crimped in the the seal under there or something causeing a leak, but when i took off the intake everything looked ok. Also i never could hear any sucking or anything in the engine bay so im hoping a BAD 02 was causing my probs??? The exhaust smelt a little different also like it was gassy(raw fuel). I thought it was just some coolant burnin off that ran out, but that had a sweeter smell to it so that wasnt it.
worse comes to worse ill put the stock one back on i guess. Only takes 4-6 mins to pop the intake off now <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<strong>I had a leak also on my LS6 intake.It was popping bad through the exhaust and you could hear it in the engine bay leaking.It ended up setting a SES light for running lean on bank one and two.Whatever that means.Make sure your Knock sensors wire are not in the way under there.I still have my intake off going through the same thing you are <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> good luck</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Slick: Whats up man! My Knock sensor wires are right under the intake in there normal stance(guess that makes sense). I thought one maybe had gotten crimped in the the seal under there or something causeing a leak, but when i took off the intake everything looked ok. Also i never could hear any sucking or anything in the engine bay so im hoping a BAD 02 was causing my probs??? The exhaust smelt a little different also like it was gassy(raw fuel). I thought it was just some coolant burnin off that ran out, but that had a sweeter smell to it so that wasnt it.
worse comes to worse ill put the stock one back on i guess. Only takes 4-6 mins to pop the intake off now <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Joined: Jan 2002
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From: O'Fallon-MO.
Re: problems after LS6 intake install I took off those clips also.Mine is a leak for sure though.It wouldn't idle right,it was real high like 1300 rpms then sometimes around 900rpms then when it would hit the gas from a stop it would stumble bad and not want to go.But the upper rpms was fine,until a set a high idle code then a lean bank 1 and 2 code.I'm checking into my problem tomorrow but i do think it was just that the bolts were to loose.And under normal driving, soon as you let off the gas it would pop like crazy through the exhaust.
Re: problems after LS6 intake install </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by slick98ta:
<strong>then when it would hit the gas from a stop it would stumble bad and not want to go.But the upper rpms was fine.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">thats what mine does... heck maybe i did have a leak, but i dont know why she ran fine for like 10 mins then when i slowed and turned around it went to hell <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
Dang it! I want my intake bolt so i can see if replacing the 02 helped
<strong>then when it would hit the gas from a stop it would stumble bad and not want to go.But the upper rpms was fine.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">thats what mine does... heck maybe i did have a leak, but i dont know why she ran fine for like 10 mins then when i slowed and turned around it went to hell <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
Dang it! I want my intake bolt so i can see if replacing the 02 helped
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Joined: Jun 2002
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From: kuwait
Re: problems after LS6 intake install </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 98TAauto:
<strong>well she idles fine, but the car seems like shes flooding up in the lower RPMS. Any ideas??? Maybe I have a bad plug or so.. going to atap them now</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hi ,
Check your gaskets intake maybe should be that .
Fahad ..
<strong>well she idles fine, but the car seems like shes flooding up in the lower RPMS. Any ideas??? Maybe I have a bad plug or so.. going to atap them now</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hi ,
Check your gaskets intake maybe should be that .
Fahad ..
