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

Can someone explain what this wire is?

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Old Apr 9, 2026 | 04:41 AM
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Default Can someone explain what this wire is?

Passenger side near the rear two injectors. Looks to me like a single green wire. Previous owners have the wire im holding disconnected from something.
Just picked this up for $4k and finally able to dig into what all I see that’s wrong. Headlights also have me in a stump. Fun project but my god I feel like they royally jacked some of the wiring.

thanks guys! I’m sure I’ll be back with more.




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Old Apr 9, 2026 | 07:44 AM
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Is there a wire attached to EGR temp switch ?
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Old Apr 9, 2026 | 12:00 PM
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In the first pic:

Directly behind the rear injector is the EGR Diagnostic Temp Switch. The wire in your fingers is supposed to be attached to that switch. The system will set Code 32 after a period of time (usually at highway cruise) with that switch not connected.
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Old Apr 9, 2026 | 12:34 PM
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Thank you fellas. I’ll check it out when I get the chance.
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