88 f=150 4.9 litre standard truck idles rough and when i try to give it gas it just bogs.the check engine light is on but i cant get ant codes out of it i even went out and bout a cheap code scanner but that work either any if i leave the scanner connected it runs like a raped ape but real rich take the scanner off and it bogs like crazy ty for the help in advance

 

Here are some things to look at:

Ford Fuel Injection No Codes?

No Codes/Starts in 4th Gear