Crazy Cam Timing Numbers On ScanGuage- Coyote 5.0

[SOHCman]

There is no startup tick or rattle that might make me think cam phasers, but my scan gauge 3 is showing me some interesting cam timing numbers occasionally. I mostly see these at start up and under heavy load when the cams are close to or at 0.00 timing. Under light load they are usually at 30.0-40.00

Engine runs great and gets full EPA mileage claims, currently using VRP 5w30 and Fram Ultra because I purchased it before I knew better.

Has anyone ever seen this before or know why the scan gauge might do this? Thank you.

SOHC

 

[Trav]

I know less than nothing about this engine but this may be helpful.

https://forum.hptuners.com/showthre...-on-Coyote-for-most-power&p=390016#post390016

 

[Klutch9]

Our Carnival will often advance timing 40 degrees or so under light load/easy driving.

 

[Timmastertech]

pid is broken, or more accurately the tool is not interpreting the info correctly

 

[D60]

Based on VERY limited experience, the old Ford 3.0 V6 would do something similar when the not-a-distributor for DIS fails -- but it also falls on its face over ~3500rpm

I'd say your ScanGage is wrong or you'll have manufacturer specific codes for failed CMP/CKP or similar. Obviously, you'd expect drivability concerns if the latter were true.