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Won’t start unless I open up throttle

I have a 2001 Chevy express 5.7 extended and the only way to get it started is if I hold the gas pedal when I’m turning the key.
Maybe you guys could give me some tests to run to figure out the problem? Thanks

If the idle air control valve doesn’t allow air into the engine, it won’t start unless you hold the throttle down.

Also, if the engine is flooded, holding the throttle down clears the flooded condition. But you can usually smell gas if that happens.

Try cleaning the IAC valve and throttle body with throttle body cleaner to see if that helps.

Tester

Thank you I’ll try that

If you have to hold the gas pedal all the way to the floor, flooded is more likely. If pushing the pedal even slightly down allows the engine to start, the IAC is the more likely culprit.

Until fuel injection came along, this was the way you started a car.