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

What voltagfe for a code 21?

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Old Nov 24, 2003 | 06:35 PM
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George West's Avatar
George West
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From: Holbrook NY
Default What voltagfe for a code 21?

I have found that my car - a '85 'Vette - can profit from some tailoring of the TPS. I have a DPDT relay that engages at 75% throttle. One function of the relay is to apply full voltage to the TPS wiper wire. At what voltage will code 21 set? It indicates "high TPS voltage.

The relay also arms the nitrous, boosts the fuel pressure, and interrupts the alternator. I did not interrupt the A/C clutch, because I am sure that the computer does that already. Right??

Thanks
-George
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