ISX Codes 2346 Turbo Intake Temp and 6725 Intake Manifold Pressure

[OakleyRiver]

(08-19-2025 )tree98 Wrote:  Hook up insite and key on engine OFF look to see if insite shows the turbo spinning.

The turbo speed sensors can get cooked from drivers lugging the dog shi#t out of the engine. When this happens the sensor doesn't show zero movement. Instead it shows the wrong speeds so the ECM is getting incorrect data and isn't able to control the turbo correctly. This leads to the symptoms you mentioned.

Insite shows 0 on the turbo speed but truck ran all day yesterday without an issue and no codes. It sat overnight so its cold this morning but ill try and get it to throw the codes again and check turbo speed at that point when everything is hot.