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jpilcher jpilcher is online now
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Join Date: Mar 2010
Location: Hamilton, On
Posts: 804
Originally Posted by Tippy View Post
I posted between your pics.

I'm using the 3.2 idle valve. I see you're using PWM on the idle valve.

That might be your problem!

With the 3.2, you can use "FIdle", which "closes" the valve (not fully) as the engine warms. There isn't fluctuation during steady head temps. Once "closed" (if you will), it doesn't "open" rapidly to prevent the engine from stalling at idle.

Not sure how PWM idle valves work?

You can see in your datalogs. Does the idle valve open and close rapidly during these oscillations????
Hi Tippy

So for the idle valve I should have it set to on/off? I don't have Fidel as an option. The valve I am using is a Bosch 3 wire unit. I think it came off a BMW.

I will give this a try.


Old 07-06-2017, 05:13 AM
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