93 4.0HO auto won't start turns over but won't start I'm getting fuel and spark the tps and cps are pretty new. I started it and it ran rough for a sec then shut it off now no start. I rebuilt it so it only has about 6000 miles on it also. Could the computer be bad? Also gives me 55 code

 

55 is end of codes. did you do a proper code reading? And does it start in neutral?

 

You say you have fuel and spark. But do you have a good blue spark? Also what kind of fuel pressure do you have? If you have anything other then a strong blue spark won't do. And you need at least 39 psi for fuel pressure.

 

I plugged in a computer I had from a parts jeep and started right u. I'm guessing my old one just took a crap.

 

Odd....The computer is often not the first thing to change with a no start....hope this was it for you, though. Let us know if the situation returns.