Re: CEL on - for the 2nd time
My ranger did this for three years. Bad miss at 4000 RPM's. Replaced the cam sensor....but not the cam sync. Replaced plugs, wires, dip tube sensor, maf sensor, took off intake and cleaned it, and put on cam sensor. All of these ended in a CEL once in a while...but not all the time.
Finally, I put in a new cam sync and my truck drives like new with 207,000 miles on it.
I bought the cheap cam sync because I did not want to pay for the FMC brand if that was not the problem. I will buy a new FMC Cam Sync in a couple of months and replace the cheap Chinese cam sync.
If your ranger misses at 4000 rpm's or near that rpm....replace the cam sync. My cam sync did not make a noise...yet it was still bad!!!!!
3.0L Cam Sync replacement:
1. Locate cam sync on rear of engine behind intake pass side
2. Remove sensor (two screws--3.5 mm)
3. Take a picture of Cam Sync...note orientation of outer housing and moving parts on the inside of the Cam
4. Remove retaining bolt on cam sync 10mm
5. Remove cam synch
6. Oil moving parts on new cam sync
7. Install Cam Sync Make sure it is in the EXACT same place as old one
8. Install sensor
9. Start engine
I WOULD REMOVE THE NEGATIVE BATT CABLE BEFORE STARTING THIS PROCEDURE
01 Ranger 3.0L
94 Ranger 4.0L
07 Explorer 4.6 4x4
Last edited by greenehorn; 08-06-2011 at 10:24 AM.
Reason: Hints on replacing cam sync