Need Help. P0365, P0390 2013 XLT
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Tuned
Joined: Nov 2001
Posts: 281
Likes: 1
From: Back in Central Texas
Need Help. P0365, P0390 2013 XLT
I recently replaced timing chains, tensioners, phasers, camshafts, lash adjusters and followers after experiencing a rough running event with a P0025 code. After reassembly I keep getting P0390 and P0365 and the engine will not make power. Ive pulled the valve covers and front cover 3 times to make sure that it is timed correctly. I've replaced both cam sensors, and checked continuity from the sensors to the ecm connectors, everything checks out, but these codes always come back. Any help would be greatly appreciated.
2nd Gear
Joined: Nov 2025
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Same issue with mine. What did you find out?
curious what you found out for this issue? We have the same problem.
I recently replaced timing chains, tensioners, phasers, camshafts, lash adjusters and followers after experiencing a rough running event with a P0025 code. After reassembly I keep getting P0390 and P0365 and the engine will not make power. Ive pulled the valve covers and front cover 3 times to make sure that it is timed correctly. I've replaced both cam sensors, and checked continuity from the sensors to the ecm connectors, everything checks out, but these codes always come back. Any help would be greatly appreciated.
Thread Starter
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Tuned
Joined: Nov 2001
Posts: 281
Likes: 1
From: Back in Central Texas
I gave up on it for the time being. I did bring it to the dealership, but they started at the beginning, doing all the things I had done. I stopped them when they wanted $1300 for an ecu that may or may not have fixed the issue because that's what the book said to do as the next step. I know for a fact that it's not the sensors or wiring and just for fun, I replaced the ecu as well, also to no avail. I just pulled it back into the shop to start digging back into it. I plan on taking a closer look at the phasers. They're new, but I did buy them from amazon (seller that FordMakuLoco suggested), so there is a possibility that they are defective.
What about you, did you figure anything out?
What about you, did you figure anything out?
2nd Gear
Joined: Nov 2025
Posts: 2
Likes: 0
This was for my buddies wife’s truck so she’s been driving it as is for now. We did find that one of the tabs on the phaser was bent away from the sensor face. Hoping that was the issue, we bent the tab back straight and gapped the tab back to sensor face. no change.
My thought was that we swapped both sensors with each other and the code didn’t change sides. Assumably ruling out the sensors being an issue.
Next is check the wiring. The tabs in front of the sensors are creating a pulse so we are going to hook up an oscilloscope to the two wires and look for the pulse wave. if we get the proper pulse width at the connector pin and no intermittent voltage spikes or loss of voltage then rules out any wiring issues.
i am also leery about it being the ecu because why only that pin circuit failed? Possible I guess, but as you changed yours already kinda rules out my suspicion.
My thought was that we swapped both sensors with each other and the code didn’t change sides. Assumably ruling out the sensors being an issue.
Next is check the wiring. The tabs in front of the sensors are creating a pulse so we are going to hook up an oscilloscope to the two wires and look for the pulse wave. if we get the proper pulse width at the connector pin and no intermittent voltage spikes or loss of voltage then rules out any wiring issues.
i am also leery about it being the ecu because why only that pin circuit failed? Possible I guess, but as you changed yours already kinda rules out my suspicion.
I gave up on it for the time being. I did bring it to the dealership, but they started at the beginning, doing all the things I had done. I stopped them when they wanted $1300 for an ecu that may or may not have fixed the issue because that's what the book said to do as the next step. I know for a fact that it's not the sensors or wiring and just for fun, I replaced the ecu as well, also to no avail. I just pulled it back into the shop to start digging back into it. I plan on taking a closer look at the phasers. They're new, but I did buy them from amazon (seller that FordMakuLoco suggested), so there is a possibility that they are defective.
What about you, did you figure anything out?
What about you, did you figure anything out?
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