Tach

[dripley]

It appears you can replace it to me. Whether or not you have to pull the cam I dont know. The crank tone wheel can be pulled since it is 2 pieces. Maybe the o e on the cam is too. There is a possibillity the cam sensor you installed is bad. It does happen occasionally. 

 

Here is picture of my gear and you can see the fasteners that hold it on. Appears to be 3 of them screwed in from the back of the gear.

[Mgarner96]

It’s just so weird to me that on my edge cts2 monitor it monitors engine speed and while I have a dead tach on the ic, the one on my monitor reads just fine

[Dieselfuture]

9 hours ago, Mgarner96 said:

It’s just so weird to me that on my edge cts2 monitor it monitors engine speed and while I have a dead tach on the ic, the one on my monitor reads just fine

Exact same thing on my donor ecm, I bet it's in ecm or wiring/pins. Be nice if you had another one to try

[Mgarner96]

Just got ecm back from repair and while they said the lift pump circuit was bad and repaired, everything else in the ecm was good

[Great work!]

The vp44 also computes RPM from its internal position / speed sensor and sends it to the ECM by the CAN bus. The edge gets its RPM from the bus.