Deville Fuel line problem, not sure ?

Does it start right back up? Will it stay running if you give it a little gas? If so possibly idle air control valve dirty/faulty or dirty throttle plate. If no possibly pcv valve or egr valve sticking open.

Yes, it will start back up and stay running as long as I push the pedal, once I release it putters out ...thanks for the quick response .

I would look into cleaning the idle air control valve and the throttle plate.

Thanks my friend , is this something a novice can do with some mechanicals skills or do I need special tools . (Am on a tight budget and would line to save if I can...) Thanks

No it's something you can do with just regular tools. Most idle air control valves are held in place by two Philips head screws. As far as the throttle plate goes when you remove all the plastic duct work from your air filter to intake the throttle plate will be right in the front edge of the throttle body.

After looking at a picture of your IACV it should be the same with two small screws holding it in.

Dandyoun . Thanks again and I'll keep you posted as soon as i complete ...regards !

How idle be fix. Because push gas is running but air coming out some in hole areas