so sometimes it wants to rev othertimes its like it hits a wall- revs just stop. what the hell could cause this-- no i havent ran the codes- I havent had time to build a tool- replaced o2 with bosch OEM- replaced fan switch,replaced mfts- clean airfilter --- I dont have a manual cause ebay ripped me off- please give some ideas- it cant be serious cause sometimes its fine. :frustrated: