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Old 12-22-2009   #1
Ccmano
 
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Default Need a Secondary Vacuum Diagram fo a 91'

Can anybody shoot me a vacuum diagram (under plenum) for a 91'? I only have one for a 90', 1991's have that looped line. Can't seem to find one on-line only photo's.
Email is ccmano54@gmail.com
Thanks
H
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Old 12-22-2009   #2
Jeffvette
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

Hans, the only two different things are the EVAP purge and vacuum lines.
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Old 12-26-2009   #3
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

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Originally Posted by Jeffvette View Post
Hans, the only two different things are the EVAP purge and vacuum lines.
I assume the EVAP purge is the gadget bolted down with the two 8mm bolts on front of the coil frame? At the moment, I cannot find the electrical plug that plugs into the North end of that EVAP purge (my 91' is facing west)

Oh...ya....I rotated each vacuum actuator for secondary so the shaft is not at such an angle It appears they were installed 180 deg off.

What I really need is a nice under plenum labeled picture of electrical connections as well as vacuum connections for a 91' like WB9MCW provided in http://www.corvetteactioncenter.com/...cuum+Diagnosis which appears to be other than a 91'

Last edited by Dynomite; 12-26-2009 at 12:43 PM.
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Old 12-26-2009   #4
Z51JEFF
 
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

Heres a picture,dont know if it helps much.[IMG][/IMG]
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Old 12-26-2009   #5
Dynomite
 
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

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Originally Posted by Z51JEFF View Post
Heres a picture,dont know if it helps much.[IMG]

[/IMG]
Thanks....this is the cleanest and most detailed picture I have so far...I think from this I can get er done

I assume the EVAP purge is a gadget bolted down with the two 8mm bolts on front (towards front of Z) of the coil frame (frame holding 4 coils) which if so.....is hard to see in the picture. I am sure Jeffvette or you can tell me for sure and I am still looking for the electrical plug to that EVAP purge if that is it

I wonder if the vacuum actuators for secondary shafts are suppose to be angled or was that an oversight during assembly

And it appears to be a 91' .

Last edited by Dynomite; 12-27-2009 at 12:45 AM.
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Old 12-26-2009   #6
Z51JEFF
 
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

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Originally Posted by Dynomite View Post
Thanks....this is the cleanest and most detailed picture I have so far...I think from this I can get er done

And it appears to be a 91' .
It is a 91,I figure between a diagram and an actual picture should help somebody out.
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Old 12-22-2009   #7
WB9MCW
 
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

http://www.corvetteactioncenter.com/...cuum+Diagnosis
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Old 12-22-2009   #8
Ccmano
 
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

Thanks Bryan, I'm aware of that one. Unfortunately it's a 90' not a 91'.
H
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Old 12-22-2009   #9
Ccmano
 
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

Never mind I found one! I forgot there's one in the engine supplement book.

For those of you not aware of the difference here are the two side by side. 91'+ on top, 90' on the bottom.
H



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Old 12-23-2009   #10
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Default Re: Need a Secondary Vacuum Diagram fo a 91'

one extra part is that the difference?

do you have a 1992? or is it the same as the 91?
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