Just bought a new truck and need help. Running ruff and smells like its running really rich. to get it to start i have to floor it to get it to start and keep it running but its spits and spuders. It just dumping fuel into the motor. if get it to start good and try to drive it just spits and spuders and wont go anywhere unless its floored. its an 89 tec 4 ,5 speed. i thank its just a map,02 or some sensor.please help thanks

Easy one.

A full tuneup will most likely fix all your problems.

Read this link from BlazerLT
http://www.automotiveforums.com/vbulletin/showthread.php?t=453371

Plus blazee was nice enough to do the homework and list all the codes on this link
http://www.automotiveforums.com/vbulletin/showthread.php?t=425721

They're both pinned at the top of the S10 section, so they'll always be easy to find