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2010 Ford Explorer 4x4 4.0 L 6 cylinder

  • RSTechau
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2 years 10 months ago #58842 by RSTechau
2010 Ford Explorer 4x4 4.0 L 6 cylinder was created by RSTechau
Am in need of help, please. I rebuilt the motor. Started it up and ran fine until it got warm, and died. Replaced crankshaft sensor and it won’t do anything! Put the old crankshaft sensor back in and it will fire and run for about 15 seconds then dies. With the new sensor in I get no sensor signal to the camshaft sensor. I have since opened the “spray can of parts”, and it made no difference. I’m getting a 5 volt reference to everything except the camshaft sensor when the new crankshaft sensor is in. I put the old crankshaft sensor back in, and it will start and run for just seconds and die. A wrench comes up on the dash. I don’t know what to do now. I have watched most of your videos and am at a loss. Please help!

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  • Tyler
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2 years 10 months ago #58867 by Tyler
Replied by Tyler on topic 2010 Ford Explorer 4x4 4.0 L 6 cylinder
For whatever it's worth, I think now would be a good time to reset your approach. Treat the start/stall as a completely new problem. Approach it like you've never seen this vehicle before.

To that end, I'd say reinstall your old CKP sensor, clear fault codes and do the start/stall thing a few times. Recheck for fault codes and post them here if you find any.

It starts and stalls, so what is it losing during the stall? You can use an incandescent test light to monitor injector pulse while a helper starts the engine. Same for spark.

If you're losing one or the other, you're headed down the input path. CKP, CMP, like that. If you're not losing either, then the PCM is trying to keep the engine going, and you're going down the engine mechanical path.

This may also be of interest:

www.scannerdanner.com/forum/post-your-re...-to-run.html?start=0

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