When I start the engine it fires up but it is stumbling and if I don't pump the gas a little it will shut off. No codes. Once I get it going, it runs fine. Could it be a bad tank of gas? Thanks guys.

 

Pumping the accel pedal only increases the air flow to the engine. Requiring extra air at startup could indicate a rich start.

Doers it start easier if you hold the accel pedal on the floor, before you turn the key to "start", and hold it on the floor until the engine starts? That might indicate leaking injectors.

Does it remain "stumbling" until the engine warms up? Could be a problem with the coolant temp sensor. Or maybe the IAC (idle air control valve) is not responding to provide the fast idle required for cold start.

Is this something that has developed over a period of time, or is it something that just started after the most recent tank fill?

 

Wouldn't you know it starts fine now. But still stumbles a little for a few seconds until it reaches idle.

 

Must have been the gas as she runs good now.

Had a tuff time finding wiper blades for it.

 

You might want to update your "signature".

I saw your question on another site about "early" and "late" wipers. 93 must have really been an odd year, since the listings for 93 show an 18" blade. 94 and up are all 24" blades. 94-97 had the reverse J-hook design, 98-02 had the conventional J-hook. I still have the original reverse J-hook blade frames on my 94 Formula (bought it new) and just replace the blades refills. I believe its an Anco 24N.

 

Mine was a 24" So, it must have been a late model Firebird. What works is a Trico Exact fit 24-9R