NC throttle hesitation

Technical Area Engine, Transmission, Exhaust etc
1
  1. My model of MX-5 is: __ NC1 Sport
  2. I’m based near: __ Colchester
  3. I’m looking for technical help or recommendations on: __ Throttle hesitance when on a straight, caused by DSC?

Hi all,

On straights I have found the throttle to hesitate when I put my foot down. This is from low revs & low speed, to high revs and high speed. The car will lift around 500 RPM or so and then drop 300 RPM or so before then setting off. It’s happening on straights as much as in corners. It’s especially frequent when the car is up to temp.

Interestingly, I have tested turning off the DSC and found the problem goes away. As this is a new issue, I imagine that the DSC may be malfunctioning. Is that even possible!?

Any ideas on why the car may have suddenly decided to do this would be very welcome!

Thanks
Andy

2

Any ODB codes being flagged up ?

3

Are you using cheapest petrol?

If so try a few tankfuls of V-Power to clean out the clag.

My low mileage Niseko was very unhappy at low revs and balancing the clutch when I picked it up from the dealer, but its symptoms were exactly what my old Vextra-b had before I fed it V-Power.
In both cases the engine was then cured of all hesitations and reluctance.

4

Hi guys,

I only use 98/99 RON petrols. No OBD codes showing up.

I have a bottle of cataclean ready though, so will.give that a go too.

Andy

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5

Could be a spurious reading from a wheel speed sensor giving the impression that a wheel is slipping so the PCM will reduce power.

If you can monitor individual wheel speeds, do this and see if they are all the same.

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