Engine P0340 Error 2006 Gt

Oct 12, 2017
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#1
Hello! I have a 2006 GT and got a P0340 error. Changed the cam sensor and alternator. Still has issues and check engine light. Mechanic spent about 5 hours going through the wiring...no issues. Checked the oscillator in the alternator, it's fine. Any thoughts? They are stumped.
 
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74stang2togo

Walks Into Lift Arms at Work
Mod Dude
Mar 7, 2002
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#2
For a P0340 code on most cars, your list of likely culprits is:

1. Cam Position Sensor
2. Wiring.
3. PCM

On certain Fords, including yours, you can add the alternator to that list.

I'm not sure how it took your mechanic 5 hours to go through the wiring for the camshaft position sensor circut, there's not but 2 wires in the circuit for each sensor and a total of two sensors.

Get a second opinion from another technician.
 
Oct 12, 2017
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#3
Thanks for your reply. The 5 hours included checking the new alternator wiring, test driving to check the idle ( dips rpms when idling) replacing the cam shaft sensor again just to confirm the new one they installed wasn't bad and a few other things they tried. They didn't just check the cam sensor wiring. That being said, I will look into your suggestions!
 

Bullitt347

man bewbs please...
Mar 23, 2007
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#4
Replace the alternator. I have seen this a few times. A alternator going bad...even though it tests good, can cause this code. Weird.
 
Oct 12, 2017
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#5
Replace the alternator. I have seen this a few times. A alternator going bad...even though it tests good, can cause this code. Weird.
It's a new one. We tried that and still have the code...
 

Bullitt347

man bewbs please...
Mar 23, 2007
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Pacific NW
#6
A new one from whom? If it is a Duralast, well it is probably bad right out of the box. Stay away from AutoZone "Duralast" parts. A new Ford replacement would be the way to go.
 
Oct 12, 2017
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#7
Hmmmm. Yes, got it from AutoZone so perhaps it's not a good one. I'll try what you suggested. Thank you!!
 
Oct 12, 2017
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#8
Got a new alternator PA performance. Didn't fix the issue. Code still up and the rpms are dipping when idle. Any other thoughts?
 

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