Hi this is a new expert my name is David. Let me see if I can help.
P0340 : Cam Sensor Condition
P1309 : Misfire Monitor Disabled (ECM Disabled Misfire monitor)
As far as I know the 1998 ford 3.0 was not the v10, So you do not have a cylinder #9. I thing your code reference is for the wrong truck or out of date.
This code could mean:
- The camshaft position sensor could be defective,
- The camshaft synchronizer (the part that took the place of the distributor on DIS engines) has failed,
- If you have recently had the camshaft synchronizer replaced it could be out of time.
This problem happens when the PCM doesn't see a good CMP signal when you crank it will "fake" a reading and see if that works.
When you give it short bursts (cranks) it might be try a reading and then on the 3rd try it may see one it likes and runs ok. It's hard to explain properly.
Alignment tools are available, however they are not usually needed if the old synchronizer is marked carefully before removal, many tech's keep a small bottle of white touch up paint in their tool box for this purpose.
The sensor / synchronizer assembly needs to be 54 degrees Counter Clockwise from the front of the engine NOT 54 degrees clockwise.
Has there been any work done to the truck Before this problem starter? Like timing, cam shaft,
Things to check If the camshaft synchronizer And the camshaft position sensor were BOTH replaced right.
BLK / WT wire at the sensor is ground, RED is HOT (Batt Voltage) and the GR is the signal output to the PCM from the sensor.
The output signal should be a 0V to 12V and back square wave, three complete cycles per crank revolution. If your not getting this check wires from sensor to PCM.
Let me know what you find.
Please understand All the experts hear are trying to help, In many cases from 1,000's of miles away. All we have to go by it the info you give as well as the level of detail you give, Things would be easyer if I was standing right there and could test and see the problems.
So please under stand we are trying to help, Help us help you.