My ISV is out during a intake refresh and wanted to check operation and clean ISV. It seem to work okay before disassmbly but want to make sure before assembly.
I searched through the threads, which of the 3 prongs do I bump for operation?
I dont want to fry the coils.
Thanks

 

Mike,

I had mine out last winter and checked it with a battery charger. Can't remeber the exact poles for the +12 and the ground but I have posted it on this board. Let me do a quick search and see if I can find it.

 

Middle pin is 12v. Touch ground to each outer pin - one at a time - to make sure it works.


S4 and later ISV is two pin. So, above directions do not apply.

 

Mike,

I can't find my old post but from what I remeber, keep the positive on the middle and switch the two outseide ounes with the +12V. When you have the - on one side the valve will go one way, then when you move the - to the other outter pole the valve will rotate the other way. First try it with a 9V battery just to make sure then, you can got to a 12V. I started with a 12V but with only 2amp, then when I was sure it was the correct way I stepped it up to 50amps. This is where you'll see how fast the valve van react. With the 50amp the vavle was very fast and had a pretty good momentum.

 

if it's the original it's probably better to just replace it.

 

Not sure if original but before removal my idle was stable with no idle flutations, steady at 650.
Although I'm chasing a stumble/miss at idle and thus replacing vacuum lines and cleaning injectors(Cruzin Performance). I already replaced caps, rotors,plug wires , spark plugs, temp sensors and no change.