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03 MarBosch PWM Idle Valve
![](http://triumphspitfire.rickbaines.com/files/2017/03/WUE-curve-300x230.png)
The car has been off the road since 2014, and one of the last things I needed to refine was the operation of the PWM Idle valve (I used a Bosch 0 280 140 516 from a Volvo). I’d managed to get it to work somewhat okay, helped by adding a restrictor in on the […]
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