VL Walkinshaw Build Electronic Issues

[Nzer]

Filed the TPS mounts. Now have 0.5v at Closed Throttle.

[Nzer]

WOT

['quipt4it]

Yes, I thought that would lower the WOT TPS output.
Did you test yet?
Just measured 0.84v closed/ 4.36v open on mine. The range is similar. Maybe bump it up a tad?

[Nzer]

Yes, I thought that would lower the WOT TPS output.
Did you test yet?
Just measured 0.84v closed/ 4.36v open on mine. The range is similar. Maybe bump it up a tad?

I haven’t test as yet. I’ve bought some cap screws to use for the TPS mounting screws. That way I can get in there with an Allen key and not have to remove the secondary TB.
Ive opened the primary a little also, ready to see how it idles up. I’ll push it up a little that way I could go in and out on the TB stop screw. I’m really hoping this will fix it.

What sort of cold idle should I maybe be aiming for? The service manual states the operating temp idle but not cold.

['quipt4it]

With the cam go for around 800-850 rpm. Then see how it feels when you go a little lower.
Set it wherever it feels happiest.
I was wondering why we had a missing t-body

[Nzer]

This is with the TPS set close to .5v and the primary throttle cracked open. Also tried it at .6v, .7v and .8v. All the same outcome.
https://vimeo.com/490593071

This is the same but trying to engage the A/C.
https://vimeo.com/490593260

['quipt4it]

How far did you crack the primary throttle. Without being able to control the IAC steps thru tuning, you could do the following,
Find a piece of aluminium with the same O.D, as the IAC bore. measure where the inlet port to the manifold is, what you would be trying to achieve is to drill a small hole in this sleeve to block/ reduce the air passage into the manifold. I have done this to good effect in the past.
But first, did you do an IAC relearn. If yes, let me know if you see where I am going with the above, if not, let me know.

[Nzer]

How far did you crack the primary throttle. Without being able to control the IAC steps thru tuning, you could do the following,
Find a piece of aluminium with the same O.D, as the IAC bore. measure where the inlet port to the manifold is, what you would be trying to achieve is to drill a small hole in this sleeve to block/ reduce the air passage into the manifold. I have done this to good effect in the past.
But first, did you do an IAC relearn. If yes, let me know if you see where I am going with the above, if not, let me know.

I’ve open the primary quite a bit. If I open it more it will idle up close to 1400rpm
I’ll need you to tell me how to do the IAC relearn?

['quipt4it]

It will do it normally if you first disconnect the battery for a couple of minutes, then start and hold the idle over 1500 or so RPM for 20 seconds.
My take on the problem is that your getting too much IAC input. I don't think a reset will fix this. Give it a go.

[Nzer]

It will do it normally if you first disconnect the battery for a couple of minutes, then start and hold the idle over 1500 or so RPM for 20 seconds.
My take on the problem is that your getting too much IAC input. I don't think a reset will fix this. Give it a go.

Will try this tomorrow now as it’s a bit late to fire it up.
It’s funny how it will idle at 850rpm in diagnostic mode. Any thoughts on this?