Ok guys and gals this is my first post here and i feel like im out of options. I know mopar man is the man so figured i would try here. I have spent over $4800 on this one problem and the Dodge dealer or local shops cannot figure out the problem. The truck has been like this for 3 years and im about to just part it out LOL. Here is the problem. The truck starts and runs fine when u first fire it up. It idles like it is supposed to until it gets to operating temps. Once it gets to normal temp it starts to "miss" at idle unless i keep the RPM at 1500 or higher. Once it misses the check engine light comes on and puts truck in limp mode. I can pull over, clear the codes with my OBDII programmer, start it back up and it will run fine for a few minutes and then the miss comes back. If i let the truck cool down and clear the codes, it runs normal until it gets up to temp again. If i let the truck cool down and dont clear the codes, the problem is there from a cold start. The code that comes up is 1690 cam position sensor does not agree with ecm.Ok so now on to what i have replaced :banghead:. First i replaced the VP44 with a brand new one from Gus at FBD. Same issue. So i replaced the cam position sensor. Then got 3 remanufactured ECMs and still had the same issue. I took it to Dodge and they replaced the VP44 with ANOTHER brand new one from Gus. Then a brand new ECM and Cam position sensor. After that it still had the same issue so they told me it was my Airdog not supplying enough fuel and i needed the "intank fuel pump" LOL. I was so sick of the stealership i paid them for everything and went to a local diesel shop and its been there since. I have a fuel pressure gauge and the thing never drops below 15 even when i had my Quadzilla on all the way. All this time the problem has been there, the chip has been off and i have left it off until the problem is fixed. So after taking to a local shop they told me it had to be something electrical and was possibly something with the wiring harness. So to save money i decided i would replace the engine wiring harness....well that didnt help at all and the problem is still the same as it was in the beginning. I have also replaced the Cam position sensor 3 times and even pulled a working one from a buddies truck and problem was still there.The truck is a 01 with 5 speed. I have Airdog 150 fuel pump, egt, boost and fuel p gauges, but everything else is stock. If anyone has ANY suggestion on what or where to bring this truck. I just want it running again and i have almost got half of what i paid for the truck just in trying to figure out this issue. Although i know i will have plenty extra parts if this thing ever gets back on the road. Thanks for any help guys

Think sledwrecker is onto something. I did find this while running around, might spark some more thoughts.

The Camshaft Position Sensor (CMP) on the 5.9L diesel engine is located below the fuel injection pump. It is bolted to the back of the timing gear cover. The Camshaft Position Sensor (CMP) contains a hall effect device. A rotating target wheel (tonewheel) for the CMP is located on the front timing gear. This hall effect device detects notches located on the tone-wheel. As the tonewheel rotates, the notches pass the tip of the CMP. When the leading edge of the tonewheel notch passes the tip of the CMP, the following occurs: The interruption of magnetic field causes the voltage to switch high resulting in a signal of approximately 5 volts . When the trailing edge of the tonewheel notch passes the tip of the CMP, the following occurs: The change of the magnetic field causes the signal voltage to switch low to 0 volts . The CMP provides a signal to the Engine Control Module (ECM) at all times when the engine is running. The ECM uses the CMP information primarily on engine start-up. Once the engine is running, the ECM uses the CMP as a backup sensor for engine speed. The Crankshaft Position Sensor (CKP) is the primary engine speed indicator for the engine after the engine is running. With the clip on the sensor pointed up, the far right terminal with the switch on should produce 5 volts, the middle pin should produce ground and the far left pin should show continuity to the 24 pin on the C1 ECM Connector. I would start with the basic wiring diagnoses to verify the wiring is correct.

On top of the items we've covered here's some items that can also cause CMP codes. * Injector DTC's present * Other DTC's * Camshaft sensor * (F855) 5-Volt supply circuit open * (K916) Return circuit open * (K44) Signal circuit shorted to ground * (K44) Signal circuit shorted to supply (F855) circuit * (K44) Signal circuit shorted to (K916) return circuit * (K44) Signal circuit short to voltage * ECM * Intermittent condition

OK guys just wanted to give yall an update. We pulled the cam out and the cam had been walking forward about an 1/8 inch. It had been rubbing against the timing cover!! So we got it repressed on and i have now drove it about 3000 miles without one issue. Its so nice to have my rig back! Thank you to everyone who was there to help!!

Don't let jlwelding see this

OK guys just wanted to give yall an update. We pulled the cam out and the cam had been walking forward about an 1/8 inch. It had been rubbing against the timing cover!! So we got it repressed on and i have now drove it about 3000 miles without one issue. Its so nice to have my rig back! Thank you to everyone who was there to help!!

this makes since if im understanding it right, if the cam and gear walked forward and being the gears are helical cut, it would throw the cam off time by a little bit that would make the idle rough.

Don't let jlwelding see this

hahahah no kidding