91' b2200 threw 5 check engine codes at once!
 

Hi guys, Yesterday I figured out how to pull the check engine codes. 8-MAF 9-Water thermosensor 11-thermal-intake air dynamic chamber 12- throttle position sensor 14- atmospheric pressure sensor. I put in a new water thermosensor today and left the battery off the car for a few hours. Started the truck and nothing changed. All the codes came back. When driving the truck it seems fine, but when I shift or let off the gas it gives me the feeling of an automatic transmission downshifting from 2k-1k rpms. Weird huh? If I let off the gas the car almost feels like im hitting the brakes. What could possibly be going on with my truck to make it act like that????? any ideas?