I've had my 6.0 for 2.5 years now and got really acquainted with what makes what noise, and how long starts took etc. recently this morning, i had a longer start, longer than a normal long start (4-5 seconds). Felt too long to me, but it started and didn't turn it off to try again. Got to my destination, turn the truck off and brough up ICP, FICM, FICM SYNC and cranked and watched. After 1 second ICP jumped to 600 then to 770 and 2-3 seconds later FICM sync finally read 1 and it fired. What can be causing the sync to take so long? I have had intermittent no starts before, maybe 4 in the 2.5 years i've had it and every time i have pushed on the fuse blocks by the driver batteries, and also pushed on the FICM connections to make sure everything was okay. That seemed to always work.. But no amount of pushing on them are helping the long start that is happening

 

replace the FICM relay, about $30, won't hurt to start there. FICM sync comes after CAM/Crank sync, maybe on of them is starting to age or the harness.

 

The FICM relay can't hurt, but before I spent money I'd considering pulling up crank sync and cam sync and see how long they are taking first.

The cam and crank sensors are like $30 or so on ficmrepair.com.

Hope this helps!

Ed

 

You are both right, i pulled up the other sync pid, i believe cam and crank are together? And it is either the cam or crank sensor causing the issue, as soon as it syncs to '1' ficm sync is instant and then it fires. Is this an issue? I've never heard it before, but stuff happens i guess.

I'm going to maybe try unplugging and replugging both connectors, making sure they're clean and not loose, if nothing, i will then just buy both sensors and a ficm relay because i probably should have got the when i got the FICM from Ed anyways :P