Thread: engine cuts out at 3,500 rpm

so here's my problem i have a 92 ser, just fixed a maf problem a cuple of days ago. so of corse i hhad to take it for a spin it was driving fine for a while then all of a sudden my car was dieing and if im ecelerating, the engin just cuts out at 3,500 rpm and not like in limp mode but it just stops even with my foot to the floor and i have really really bad idle my idle screw is all the way out and its bogging down at 200 rmp and needs to keep giving gas inorder to keep it running... any ideas?

sounds like there's still some problem maf-related. Also sounds like you are indeed in limp mode, unless there's something missing from your post that tells you otherwise. Go over all your maf connections again, and if you haven't do the re-grounding on it also. See where that takes you.

X2
after two failed attempts at replacing what I thought was a bad maf, cleaning it and regrounding it to the IM solved my issues. Sounds like properly adjusting your base idle is needed as well. Not positive but it shouldn't be all the way out, I know mine isn't.
Also check your egr. If it is stuck open your idle would go to shit from that as well. Just pull the hose from the bpt valve off of the egr valve and stick a screw in it to plug it up and see if that helps any.

alright so i figured out what it is... it was partualy a bad alternator, and there is a little green relay that is attatched to the ecu tray and it was bad i replaced them both but now my engine, is making a funny pinging noise after i get up twords 4k, im thinking the timming chain guard?

timing chain guide the timing chain tensioner