C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

EGR test, how to?

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Old Oct 24, 2006 | 02:38 PM
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LORDZ's Avatar
LORDZ
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Default EGR test, how to?

Working on an 89 vette, 25k miles. I have the upper plenum off whle adding an afpr and found the previous owner disconnected the egr valve. I have a mighty vac, I bring it to 15 in of vac and it slowly bleeds off. Should it hold or bleed off. Any other reason why it would be disconnected, solenoid or temp switch or most likely the valve. Any way to test while apart? I searched but couldn't find the egr test specifics IE how much vac and how long. Thanks
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Old Oct 24, 2006 | 02:40 PM
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mikey whipreck
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You can easily test the whole EGR system, but you'll need the FSM flow chart to test it properly.
If you contact Agent86 and ask nicely, maybe he can help you out with that.

EDIT::: Did a search and found this... http://forums.corvetteforum.com/show...&highlight=EGR

Last edited by mikey whipreck; Oct 24, 2006 at 02:44 PM.
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Old Oct 24, 2006 | 03:55 PM
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One of the links in that forum has it, Thanks
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