So I just bought this 86 t bird and I'm having issues. When I come out in the morning to start it, it takes 5 or 6 tries to get it to start, then it cuts out (1 or 2 times) then will run fine until it reaches operating temperature. Then it just stalls but then starts right bac up and drives for a little longer and stalls again, but always starts right back up. Any ideas on what this could be? And help is greatly appreciated.

 

It would be helpful if we could know if the problem was fuel or ign related.
What is common to both is good electrical power to function correctly,,,,,,, soooo you might start with cleaning the power and ground connections starting right at the battery and then removing and cleaning each connection that is connected to the vehicle sheet metal for grounding purposes and sometimes poor connections on the positive side can be right at the fuse panel.
Something simple like a restricted fuel filter can give these symptoms also.
Don't forget to check the plug to the computer for corrosion.

 

Not sure if it's fuel or what. What I've done so far is replace terminals, ignition switch, tfi module, fuel filter, fuel pump, intake manifold gaskets, and cleaned the iacv.

 

this car is carbureted...so what is your starting procedure?

 

A good part of the time you can separate a fuel starvation problem from an ign problem. If the vehicle loses spark (ign) it will shut down quickly whereas a fuel problem will cause it to slow down and stall.
What kind of test equipment do you have available to use? Test lights are OK for some tests where battery voltage is supplied, but can do damage to low voltage computer circuitry. Multimeters are better especially the digital variety.
There are relays that control power to the computer and fuel pump a test lite would be OK to use there also to prove out power to the fuel pump itself. The problem is to confirm a good ground for the ign and fuel pump at the pump and voltage drop testing is the better way to check this using the multimeter. Have you confirmed a good connection at the crank sensor? When you first turn the key on do you hear the fuel pump run for the usual 2 seconds?

 

The car is 5.0 EFI

 

I don't have access to a multimeter. I would say it acts more like a fuel issue because of what you said, idle drops and stalls. I can mostly get it to keep running if I keep on the gas.

 

Can you remove a few spark plugs and look at the condition of the plugs? If really black and full of carbon there could exist an overfuel problem. If extremely clean it could indicate an insufficient fuel problem. Without being able to run a few checks with the proper equipment the condition of the plug might provide a clue.

 

another way to rule out fuel vs ign is to watch the tach. tach signal is fed from the grd side of the ignition. The tach will flicker quickly at each ignition fall out.

 

tach is digital and it does seem to be very slightly erratic at idle when cold