Car won’t start after turning off engine

Post by **Tommyb 2579** » Sat May 31, 2025 12:19 pm

Hi all
Got a problem with my P reg 24v probe,can do a short journey or like I did last weekend Wigan/thornton dale/Newcastle and back to Wigan 400+ miles stop car won’t restart,until I disconnect the cps and then reconnect it she starts,do I need a replacement censor or is there something else what is causing this ,any help appreciated oh and thanks to Malc for telling me about the cps trick.

Post by **jrh** » Tue Jun 03, 2025 1:42 pm

Bit of Ju-Ju magic going on there.
The active pulse generated by the CPS only occurs at a time set by the gaps/magnets.
Once clean and hard contact, the connections will be fine.

Post by **Tommyb 2579** » Tue Jun 03, 2025 2:55 pm

Hi thanks for your message,so do you mean unbolt the cps clean the end of it and should be fine,not to clued up with probes yet being a retired roofer tell you how to fix a roof,coz there’s no wheels on it. Thanks again tommy

Post by **jrh** » Tue Jun 03, 2025 3:11 pm

Yes , items like the CPS , ABS and Hall Effect sensors generate tiny little pulses of electrical current . Dirty or loose connections are as bad as a broken wire.
A missing pulse can e enough to stop the whole system.

Post by **Tommyb 2579** » Tue Jun 03, 2025 3:12 pm

Cheers will let you know how I get on with it.

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Car won’t start after turning off engine

Car won’t start after turning off engine

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