Hard starting problem

[Brandonufchoward]

My 91 Ford Explorer 4.0 4x4 is very hard to start. I can get it started by flooring the throttle but as soon as I let of the gas it stalls. I tried to pull codes with my Solus but it would not display codes only datastream data. The ect sensor was reading about 100F on cold start so I guess that is ok. I am suspecting fuel issue any ideas? Thanks!

 

[Masterd]

Idle Air Control?

Check it.

 

[marragtop]

Check for a vacuum leak at the vacuum tree located drivers side by the firewall.