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No. Worst case senario with a bad knock sensor is check engine light, and bad fuel economy. Also spark knock, which if not taken care of can cause excessive heat to build in the engine and cause premature failure.

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βˆ™ 2009-04-01 21:54:04
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Q: If a knock sensor goes bad will it cause motor not to start?
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Related questions

Will the knock sensor cause the car not to start?

No it will not. The knock sensor is used to adjust the timing.

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It will cause it to run sluggishly.

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Would code 43 electronic spark control failure cause the vehicle to not start and would replacing the knock sensor fix this or is it an ECM issue?

I have a 1990 Pontiac Safari wagon that would not start,after much testing we found one bad fuel injector replaced it and car started but ran terrible, did more testing and found bad ignition module, replaced module runs better but now have code #43 knock sensor and engine is running in default mode switched ECM no help must be knock sensor don't think knock sensor would keep car from starting but the other things mentioned here would. Hope this helps. This wagon has 3.1 engine. Havent changed knock sensor yet.

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