# Mazda camshaft positioning sensor bad?

**URL:** <https://community.cartalk.com/t/mazda-camshaft-positioning-sensor-bad/1881>\
**Category:** Maintenance/Repairs\
**Created:** [July 18, 2007, 3:19am UTC](https://community.cartalk.com/t/mazda-camshaft-positioning-sensor-bad/1881 "2007-07-18T03:19:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ricknct](https://avatars.discourse-cdn.com/v4/letter/r/b9e5f3/32.png) [@ricknct](https://community.cartalk.com/u/ricknct)\
**Post date:** [July 18, 2007, 3:19am UTC](https://community.cartalk.com/t/mazda-camshaft-positioning-sensor-bad/1881/1 "2007-07-18T03:19:29Z")

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My mazda b2300 pickup truck does not always get spark. Can sensor be bad, or such thing as going bad? Sometimes it starts, sometimes it does not.

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**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\
**Post date:** [July 18, 2007, 4:26pm UTC](https://community.cartalk.com/t/mazda-camshaft-positioning-sensor-bad/1881/2 "2007-07-18T16:26:21Z")

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Yes the camshaft postion sensor can be bad. But the most likely candidate is the crankshaft position sensor. Intermittant signel from the cam sensor causes the computer to fire the plugs at the wrong time. The crank sensor provides the signel that the computer uses to actually send each pulse to the ignition module.