79 TA will Cold Idle but won't keep Idle when Warm

[king79transam]

I have a 79 trans am I have working on that I just replaced the fuel pump and replaced many vacuum hoses.

It will crank fine for the most part and hold an idle, however after it warms up it will still crank but will not idle.

Any thoughts of what could be the cause?

 

[Oneandonly]

@king79transam one thing you can check for is what they call vapour lock it has to do with the fuel delivery.

Check it out on YouTube I hope this helps friend.


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[Fire eagle]

Check and make sure all the vacuum lines you replaced are routed correctly.

When cold the choke being on could keep the engine idling but once it kicks off it stalls.

The vacuum is the first place I would look.