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Today at Atelier Kaz - Private NSX Enthusiast, ex-Honda R&D engineer with F1, Indy/CART background

Cruise Control, Boiler zone valve motor

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Long time ago, I borrowed the European spec Cruise Control module from our member 'modarr' but until now, I didn't have time looking at the circuit in detail. (Thank you, Mo.)


My NSX is JDM so the max speed limit through the cruise control module is just below 70mph.
It's fine when going through the average speed check camera area but if travelling through Europe on the autobahn, it would be nice if I can set the cruise control at higher speed.

With 95+ DBW model, the cruise control is done through ECU so it's not that simple but with 91 – 94 JDM non-DBW NSX, you can modify the logic and set the max cruise control speed at much higher figure.
Thank you to Mr Toyoizumi at T3TEC for his support on this.


Went out for the test driving session and confirmed that I can set the cruise control at higher speed than the original JDM spec.


One owner visited my place mid morning to collect several parts including the long front spoiler but after that, due to jet lag, I was hoping for a quiet afternoon.
However, life is not that easy....



Suddenly, the boiler decided to stop working when hot water was requested but fine for the central heating.

After some diagnosis, found that the motor at the zone valve was not working at all even when 240V was applied so it couldn't engage the micro switch that triggers the boiler.




Fortunately, the replacement motor was in stock at the local store so quick visit and replaced the faulty one.
Tested the system and everything works.


Now I can relax.

Kaz

Comments

  1. britlude's Avatar
    good idea.. i really should look at my JDM cruise control speed setting.... i may have to ask questions later!