Analytics Made Easy - Statcounter
Flywheel sensor 1993.5 S4 - Engine/Ancilliaries - The Lotus Forums - Official Lotus Community Partner Jump to content


Flywheel sensor 1993.5 S4

Go to solution Solved by stevefh,

Recommended Posts

  • 4 weeks later...

Upgrade today to remove Google ads and support TLF.
  • Moderator

The twisted pair is only used to get a better signal and limit interference. It is not strictly necessary, so if the car is running fine, just leave it like that.

  • Like 1

I have made many mistakes in my life. Buying a multiple Lotus is not one of them.


Link to comment
Share on other sites

  • Solution

Thanks Filip, I looked that up. I was wondering if they were all not twisted or just mine.How do I know it wouldn’t run better twisted, not a question ,as I am sure I wouldn’t notice the difference 

Link to comment
Share on other sites

  • Moderator

I'd need to check mine, but seem to remember part being twisted and the rest not.

Rest assured, you would know if there was a problem. The electronic ignition needs several signals for every revolution to determine which plugs to fire. These come from the flywheel sensor (also called crankshaft position sensor), generated by slots or teeth on the flywheel. 6+1 slots in the case of the Esprit.

If the signal from the sensor is too weak or absent, one or more cilinders wont fire, so you'll feel a misfire. As long as the ignition module can determine the position, everything is fine. It's not a case of running better, a plug will fire or it wont.

If the misfires are frequent enough, you can also notice the tachometer dropping, as the rpm signal is provided by the same sensor so will also be low or absent. But you'll feel that before you see it.

I have made many mistakes in my life. Buying a multiple Lotus is not one of them.


Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

We use cookies to enhance your browsing experience, serve personalized ads or content, and analyze our traffic. By clicking " I Accept ", you consent to our use of cookies. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.