Engine jerking at moderate revs
 

Hi guys, 1999 Excel, under light loads when accelerating, is fine, but soon as go to a third/half accelarator, starts jerking, all the way thru rev range, partially cleaned plenum, what i could blow out/clean in situ, was thinking plugs/fuel filter? am attempting now to pull codes, once i find the info on here, thanks.

I found the diagnostic connector, but cant find how to bridge the bloody thing, look here, and on net, anyone?? sorry if its been done before, but i cant find anything on the search engine here, or maybe im just reterded

No one knows anything???

Neil: how did you pull the codes? Do you have a reader or is there a trick?