i have a 1990 F150 XLT Lariat 4X4 with the 351w and a E4OD trans and when im drivign around after a while my check engine light will come on and then i turn the truck on then off and it goes out again what would be setting off the light?

 

You'll need to pull the codes..

 

alright thanks i thought i might have to

 

Read this - you can pull codes any time anywhere with just a paperclip.

http://fullsizebronco.com/forum/showthread.php?t=44736