V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

what does this do?

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Old 08-04-2008, 09:53 AM
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what does this do?

ok its small round thing between alternator and TB has three tubes coming from iac, rocker vent and fuel pressure regulator ??????????? i cant see the point in it ?
Old 08-04-2008, 09:56 AM
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Re: what does this do?

I have no idea about your problem, but your sig made me laugh.
Old 08-04-2008, 10:09 AM
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Re: what does this do?

ha yeah i keep meaning to change it, thing is it makes sense if you live in england.......
Old 08-04-2008, 11:43 AM
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Re: what does this do?

Lots of rain over there!
You have an 88 with a 2.8, thats weird. You sure it's not a 3.1?
Old 08-04-2008, 12:07 PM
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Re: what does this do?

yeah 3.1 was 90 91 92 ..............
Old 08-04-2008, 03:00 PM
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Re: what does this do?

Originally Posted by zs&tas
ok its small round thing between alternator and TB has three tubes coming from iac, rocker vent and fuel pressure regulator ??????????? i cant see the point in it ?
Sounds like the valve breather. It's needed, unless you reroute some vacuum lines and put in an open air valve breather.
Old 08-04-2008, 04:42 PM
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Re: what does this do?

Sounds like vacuum lines, you need the ones for your FPR and PCV system at least. I took off all of the other lines going to the TB for the EGR and charcoal cannister.
Old 08-04-2008, 10:46 PM
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Re: what does this do?

yeah it has all these intact but then theres t pieces down all three and they all go to this thing??? manual says nout.
so fpr to tb, iac to LIM and breather to just before TB. thats why i cant see he point in it ? lol

yeah ive taken my egr and charcoal out too
Old 08-05-2008, 08:06 AM
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Re: what does this do?

A picture would help.
Old 08-05-2008, 11:45 AM
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Re: what does this do?

Perhaps you're talking about the deceleration valve?

GM P/N: 14089246
AC Delco P/N: 214-453
Attached Thumbnails what does this do?-deceleration-valve_page_1.jpg   what does this do?-deceleration-valve_page_2.jpg   what does this do?-deceleration-valve_page_3.jpg  
Old 08-05-2008, 12:04 PM
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Re: what does this do?

THATS THE BEASTY!!!!! couldnt get pic up its raining in uk lol !!!!
so what does it do exactly ?
Old 08-05-2008, 12:46 PM
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Re: what does this do?

this link might help:

https://www.thirdgen.org/forums/v6/1...eferrerid=8568

Last edited by malaka; 08-05-2008 at 12:50 PM.
Old 08-05-2008, 01:37 PM
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Re: what does this do?

AHH cheers matey, just sounds like more pointless GM engineering LOL ive currently got a minor problem where when i lift of the revs hang up alittle before settling down, ive left it for a long time and now im thinking it could be this ...........
im guna remove it all i think and see what happens
Old 04-25-2018, 01:12 AM
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Re: what does this do?

Originally Posted by zs&tas
AHH cheers matey, just sounds like more pointless GM engineering LOL ive currently got a minor problem where when i lift of the revs hang up alittle before settling down, ive left it for a long time and now im thinking it could be this ...........
im guna remove it all i think and see what happens
did you end up removing it, did it work?
Old 04-25-2018, 02:07 AM
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Re: what does this do?

Dam old thread ! Yes I removed it , it helped a lot , I haven't had anything negative from removing it .
good luck !




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