Early 2000 e150 4,6l. Had bed connecting rod. Get mechanic to replace engine
.From the looks of it it was earlier model (2 coil packs instead 8). It runs badly (I wish I did it myself but its a hassle with my tools, Misfire on 3 cylinders-replaced coils-that solved it on 2 on third on second time try checked spark plug
& injector foud out dropped washer in plug well, three stripped threads,fu....k) Anyway mechanic is gone so I have to deal with it.
so Ignition ok now, Idle rpm not stable from beginning Either very low rough-stalling or racing (2500-3000RPM) Codes : first:low idle & high idle at the same time , bank1&2 lean,misfire 1,4,7, Changed coils & put iac valve from my old engine(worked OK when taken out) same symptoms, codes: high idle,,lean banks, misfire 7. Checked 7-faund that washer in spark well replaced iac with new one. Still runs rough or fast. Ignition ok.
Code: Idle Air Control System Malfunction, Checked for vacum leaks(plugged intake& high presssure and vacuum through brake
booster hose)-found none
Maf sensor-6g/s on low idle 22g/s on high . tps 22.3 at idle and opening smoothly to 90s rpm sensor appear to be working ,same with air and water temp sensors. Noticed faint air brake sound when idle changed. Located it as iac valve opening. pulled plug on it-idle increased (same sound) or stayed high -(most of the time I was able to drop idle by puttig it on neutral or park and "floring"it for a moment ,that works rarerly after new iac valve,rpm stays high or goes back to high after few seconds)
So looks like I have iac problem.
1:Electrical?(still gets a signal to open)
2:noticed-new iac valve had connector in different position(ebay listed for 2000 e150
4.6 compatible) Checked rockauto- looks like 2000 f150 rather then e150. are those
3:? whats next?