Stopping and starting while driving
Thread Starter
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New User
Joined: Oct 2006
Posts: 3
Likes: 0
Stopping and starting while driving
Got a chance to work on my truck, I replaced the cam sensor and changed the oil, now it dosen't start at all. It's getting fuel and all the fuses are good. I cleared the codes and only one is there and it is new p 1670.
What's that ?
What's that ?
Fleet Mechanic
Joined: May 2005
Posts: 1,567
Likes: 3
From: Chattanooga
p1670 EF feedback signal not detected.
Go down to the cam sensor pull the plug. Make sure that little boot didnt come down and block a pin or isnt seating correctly. Use dielectric grease if possible. Make sure the cam sensor is seated all the way and the oring is in the correct location. That is the first place to start.
Go down to the cam sensor pull the plug. Make sure that little boot didnt come down and block a pin or isnt seating correctly. Use dielectric grease if possible. Make sure the cam sensor is seated all the way and the oring is in the correct location. That is the first place to start.
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
DTC P1668 and P1670 indicates that a communication error has occurred between the PCM and the IDM.
Possible causes:
Open fuse
IDM relay
Open or shorted IDM enable circuit
Open/short in EF circuit
Open/short in FDCS circuit
IDM powering circuits
PCM
Possible causes:
Open fuse
IDM relay
Open or shorted IDM enable circuit
Open/short in EF circuit
Open/short in FDCS circuit
IDM powering circuits
PCM
