Topic: Servo tronic relay location 3.2 (Read 16805 times)

feeutfo · « **Reply #120 on:** 11 September 2012, 19:50:05 »

Quote from: Kevin Wood on 11 September 2012, 19:38:37

Is the needle tapered like a carb needle?

I guess the ECU modulates the solenoid feed to control the position of the needle in the orifice, and this bypasses the box to bleed off pressure?

needle is not tapered, it's quite a blunt end on the point of the needle. So it's an on or off situation going by the minimal amount if travel possible. No more than a millimetre movement on the needle.

Then the side holes in the grey screw allow the fluid to pass back into the hole in the box recess immediately to the side of the filter. Afaict.

So yes thats Bout the size of it.

feeutfo · « **Reply #121 on:** 11 September 2012, 20:04:59 »

Quote from: tidla on 11 September 2012, 19:34:48

Quote from: chrisgixer on 10 September 2012, 12:09:02
There a tiny little pilot hole in that grey screw. Wouldn't take much to block it. And there very little movement in the servo needle that covers same hole. Wouldn't take much for it to stick.

A little help from sammy sledge before removal?

worth a go with the heat shield removed I suppose. Problem is its very tight between the box and the engine/manifold, so can't really get a decent swing on it.

To remove the solenoid from the box will be tricky too, as one of the Allen key bolts was seized. I had to drill the head off the bolt to get it off the box. And bent the Allen key undoing the other. Iirc it's only a 2.5 mm Allen bolt.

Worst part of the box removal was getting the servo out and rummaging about in the foot well removing Clevis pins and bulk head bolts.

Provided of course that the box will sqeaze past the coolant transfer pipe. It will on the 3.2 if the Torx to lifting eye bolt is removed. Not sure that will work on other v engines. Egr's might affect things maybe...? $:-\$