hi Been having a problem with my mustang gt 2010 ,I'm getting de codes p0340 an p0344 I been reading here and other forums that most of the times is because of a bad alternator but I all ready change de cam position sensor and the alternator in both times the check engine light turn off when I change the sensors and the alternator but next time I turn the car on the light turn on again any ideas on what to do next

 

If I understand you correctly, you are getting the P0340 and P0344 codes. You've replaced the cam position sensor and alternator - but the codes keep coming back after you clear them.

These two codes will often set at the same time.

Did you change the correct sensor on bank 1?

P0340 FORD - Camshaft Position Sensor Circuit Bank 1 Sensor 1

Read more: https://www.autocodes.com/p0340_ford.html

Have you checked the battery itself? Have you checked the wiring and connections to the sensor?
Possible causes:
Faulty Camshaft Position Sensor
Camshaft Position Sensor harness is open or shorted
Camshaft Position Sensor circuit poor electrical connection
Faulty starter motor
Starting system circuit
Dead (Weak) battery


If the source of the problem is misdiagnosed, the P0344 code will be saved again, and the problem will continue. Misdiagnoses can result in a number of mistakes, including replacing the camshaft position sensor when the problem is actually one of the following issues:

Damaged wiring or a poor connection
Defective timing component
Defective crankshaft position sensor
Misfiring engine

Inspect all the wiring and connections if you replaced the correct sensor and if your battery checks out as good - of course that assumes you didn't get a bad alternator as well when you replaced it.

 

Thanks for the replay

the battery is almost new i bought it like six months ago an I don used the car because of this issue , I replaced both of the cam position sensor I'm gonna check the wiring the only thing that I noticed is that the plug of one of the sensors is crack so I put black tape around so it doesn't move maybe that could be a problem , the pins that go in the sensor reach good with de plug but maybe that could be it

 

If not electrical then probably timing related. You'll have to take off the front engine cover and check the cam phasers, tensioners, guides and chains, not something for the faint hearted.

If it is electrical, try running an additional ground wire from the engine to the chassis. I ran mine from the alternator bracket to the bolt where the battery ground wire is located on the passenger side strut tower