Hello and thanks for using Just Answer.I will try my best to help you with your question.
Have you checked for any codes in the PCM (Engine Computer)?
What four coils did you replace?
What side and cylinder numbers?
had to remove and disconnect the computer on the passenger side to get to the plugs. After re installing, pluged a computer test...no codes present.
Is there any recalls on this motor?
No recalls on the engine. I am a little confused on the coils you replaced. Fords engines are number 1-2-3-4 starting at the fan belt on the passenger side and then 5-6-7-8 on the drivers side starting at the fan belt.
What told you to replace coils 1-3-7-8?
yes....1&3.....pass side....7&8 driver side. They came apart upon removal
and that is all the had in Clearlake.
This didn't stop the rough idel or at speed.
A warrenty says to remove the head....10 hours....at $75.00 an hour!
No....searching for possible problems.....bad valve?
No codes from the comp.
Your problem is either caused by a bad spark plug, bad ignition coil or a bad injector. But I would have the system properly tested before replacing any more parts. You need to isolate what cylinder is causing the miss fire/rough idle and then isolate what is causing the miss fire in that cylinder.
The hook up to the computer says no problems ....this really sucks.
Bring back pluge,points, condencer cap rotor
I am on your side completely!
I work on Fords everyday and they are getting more and more complex. You almost have to be a computer genius to repair and/or diagnose them any more. They are now full of computers and modules.
now I find that the comp says #2 have the problem and the "power balance" is uping the fule to the others.....CRAP!
Swap the coils to the next cylinder and clear all codes. Then retest and see if the cylinders change to the ones the coils got moved to. Do the same to the spark plugs and then the fuel injectors.
Move the coils then retest. Then move the spark plugs and retest, then move the fuel injectors. Do not move them all at once though.