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

Possibly O2 sensor?

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Old Jun 23, 2024 | 07:56 PM
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Default Possibly O2 sensor?

When car is a little hot sometimes it doesn’t want to start but when left to cool down, it starts right up. The o2 sensor does need to be replaced and the computer says it’s also bad but is that what it is? Is it failing under the normal engine run from the heat cause it’s faulty? Or should I be looking elsewhere?

in cool weather and/or rainy weather it runs great
in muggy and/or hot weather, it doesn’t like to run the greatest.
also a smell of fuel is present when running it like it’s kinda rich.

1986 70th Anniversary Indy 500 Corvette
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Old Jun 23, 2024 | 10:32 PM
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Original injectors? Of so, they need to go. Replace the O2 regardless. They are cheap and easy to change.

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Old Jun 24, 2024 | 07:48 AM
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If the ECM is saying the O2 is bad, then it was bad a long time ago and should have been replaced
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Old Jun 24, 2024 | 09:08 PM
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Originally Posted by jv9999
Original injectors? Of so, they need to go. Replace the O2 regardless. They are cheap and easy to change.
new injectors, rebuilt engine. Bunch of drunk dudes rebuilding an ole legend, some things didnt get done, like replacing o2 sensor, dont ask lol

Was thinking o2 sensor as well.

(Put premium in it again, seems to be a bit better, driving again later will report back)
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Old Jun 26, 2024 | 02:17 PM
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Car randomly dies on idle rpm range.(clutch + stops)
but starts right back up.(it’s cool today)
will be replacing o2 been holding out cause there’s also a possible ground fault
i Feed it gas, didn’t want to have to feed it sensors as well. But at least I can see how long this will go before it goes bad.
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