1994 Ranger. Code # 556.

[Stevans]

Hey Stevan New Member. Got a question 1994 Ranger 11 Inches lift 35 inch tires 4.56 gears 4.0 two valve five speed trans. Have a check engine light code 556. Vehicle has bad stumble on accell. After warm up vehicle runs better. New fuel pump/relay mass air/tune up. I wanted to see if anyone has experienced this same problem.:rangerblack

 

[Tbars4]

...I used the search function here and came up with this..
http://www.explorerforum.com/forums/showthread.php?t=285954&highlight=556

 

[snoranger]

:scratch:
11" of lift to run 35s?

 

[wood1]

How about a pic of the truck? That's a lot of lift dude.

Check for vacuum leaks?

 

[BrooklynBay]

Welcome to this forum! I've renamed your thread, and moved it into the EEC-IV section.