94 Corvette, idles rough

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Mar 30, 2023 | 07:55 PM

Themavs24

Thread Starter

4th Gear

Joined: Mar 2023

Posts: 4

Likes: 1

94 Corvette, idles rough

94 Chevy Corvette will take out and run around for a hour or so Park it for 1015 minutes start back up runs real rough push on the gas. Let it idle a little bit then after that will run fine I have no clue what’s going on. Put new OPTi spark, plugs,wires waterpump fuel pump fuel filter ….

Mar 30, 2023 | 08:51 PM

pedricd

Drifting

Joined: Jun 2020

Posts: 1,355

Likes: 396

From: Northwest Ohio

Clean your IAC and or replace it.. if the pintle is sticking that can happen.

Apr 1, 2023 | 10:42 AM

64Scout

Burning Brakes

Joined: Oct 2017

Posts: 823

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From: Somewhere near Fort Wayne, Indiana

Are there any codes? Is the O2 sensor good? Battery voltage good? Fuel pressure stable after sitting?

Apr 1, 2023 | 11:22 AM

Yonker

Racer

Joined: Oct 2012

Posts: 280

Likes: 82

From: Indiana

Check your fuel injectors. When they start to fail they can work perfectly fine while cold but start to fail when hot. Check the resistance in all of them when they are hot and see what you find.

Apr 1, 2023 | 12:01 PM

pedricd

Drifting

Joined: Jun 2020

Posts: 1,355

Likes: 396

From: Northwest Ohio

Yes, like a leaky carb if an injector is leaking it will flood while sitting. Also check the fuel pressure regulator vacuum line for gas. All good advice.

OP do some troubleshooting and let us know what you find

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