# 2002 F150 5 speed 4.2 Cam sensor

**URL:** <https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009>\
**Category:** Maintenance/Repairs\
**Tags:** ford\
**Created:** [January 29, 2013, 12:07am UTC](https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009 "2013-01-29T00:07:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![chagojojo](https://avatars.discourse-cdn.com/v4/letter/c/d78d45/32.png) [@chagojojo](https://community.cartalk.com/u/chagojojo)\
**Post date:** [January 29, 2013, 12:07am UTC](https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009/1 "2013-01-29T00:07:46Z")

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It started by a minor sputtering while my gf was driving it. It became seriouly worse to where while drving at a steady speed it would jerk badly but if I drove and shifted at a high rate of speed if was fine until I released the gas pedal and symptoms returned. I let it set for a week then drove it and it was fine until I shut the engine down and restarted and the symptoms returned. This scenario has happened twice. Autozone tester reported a bad cam sensor. I replaced it and it did not work. I foolishly asked an online (32$ expert) mechanic who said it was a crank sensor. I changed that too plus put a new fuel filter on it. Before all this began my truck had been performing perfectly it only has 84k miles but my gf said that she had heard a sound like a pulley was squeaking but I never heard a sound.

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**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\
**Post date:** [January 29, 2013, 12:48am UTC](https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009/2 "2013-01-29T00:48:38Z")

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Do you still have the same fault code? I assume it was a P0340? Can you remove the cam sensor and take a picture of the housing it bolts to?

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**Author:** ![chagojojo](https://avatars.discourse-cdn.com/v4/letter/c/d78d45/32.png) [@chagojojo](https://community.cartalk.com/u/chagojojo)\
**Post date:** [January 29, 2013, 2:18am UTC](https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009/3 "2013-01-29T02:18:41Z")

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yes it is a p0340 code It will take a little time to get to it again. Tomorrow I will try to get to it again. Is there a specific view you need? Any ideas of what is wrong?

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**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\
**Post date:** [January 29, 2013, 2:31am UTC](https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009/4 "2013-01-29T02:31:53Z")

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Often I see the cam synchronizer drive (the part the sensor bolts to) failed. First sign is usually a chirping/squeaking similar to a squeaky belt. Or perhaps the magnet in the original sensor came loose and damaged the synchro drive. Anyway, that’s the next thing I’d look at.

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**Author:** ![chagojojo](https://avatars.discourse-cdn.com/v4/letter/c/d78d45/32.png) [@chagojojo](https://community.cartalk.com/u/chagojojo)\
**Post date:** [January 29, 2013, 2:59am UTC](https://community.cartalk.com/t/2002-f150-5-speed-4-2-cam-sensor/77009/5 "2013-01-29T02:59:47Z")

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Got it. I will get pics tomorrow and post. Thank you.