Help me identify this part? 1990 NA 1.6 Throttle body sensor

Kallaroo MX5 · Postby **Kallaroo MX5** » Thu Jan 16, 2014 1:58 am

Hello all,

Can someone please ID the black sensor directly under the throttle body, it is the one with the round bit on it. It looks like it only has one phillips screw mounting it and it has a two pin plug.

If you look from the front of the car it is attached to the throttle body and directly under the inlet. It is not the TPS on the side but below that.

Cheers

spikes · Postby **spikes** » Thu Jan 16, 2014 6:45 am

ISCV (Idle speed control valve)

manga_blue · Postby **manga_blue** » Thu Jan 16, 2014 10:03 am

http://www.miata.net/garage/isc.html

Kallaroo MX5 · Postby **Kallaroo MX5** » Thu Jan 16, 2014 11:23 am

Thanks for the reply's, mine is buzzing when the car is not running and the ignition is off, if I disconnect the plug the buzzing stops so it is definately this that is buzzing.

The car when started from cold idles at about 1600rpm and then as the temp guage moves it starts to drop the idle and within a few minutes the idle is at 900rpm.

Is it likely that if this is not working correctly that the car won't start when hot?

It turns over, it has fuel pressure and spark but won't start until it cools down.