Holden VH 202 Blue Emissions Setup Guide TVS stuff

[GetToDaChopa]

This is for a VH 202 6 Cyl Blue Engine with auto transmission, but maybe useful for other models too. When i was setting mine up i realy had a hard time finding an engine with a proper setup and finding a diagram online was difficult. So why spend time looking when i've already done it. here is the setup bellow i will try to improve the guide further as i go.

First you just need to buy some rubber fuel line hoses (or whatever the name may be) i believe they are 8mm, i got mine of ebay (easy to find). Even though some connections may be bigger. They will still stretch over and fit. I bought about 6 meters worth of hoses, you'll need less but i made some mistakes.

Also your TVS modules may be broken. Now those are hard find. The best i could do was find 2 brocken ones and melt the good part together :S But you should be able to find them at the wreckers with a bit of patience.

This is the technical diagram for it:

And here is example engine photos for reference to make it easier to see where all the hoses run to:

I hope this helps someone.

 

[ari666]

why is your tvs in a loop?


edit* cos thats what it says in the book... ok ignore me

edit edit* ok im having a hard time understanding the point of having that whole setup... it doesnt do anything...?

 

[GetToDaChopa]

Hey i didnt make it i dont see how putting exhaust gas back through some hoses and back into the instake makes for better emmissions. At least i think thats what it does. Weather it actually makes it better or not is up for debate but if you want to restore it back to factory, then thats the setup

 

[ari666]

its not really up for debate. EGR reduces the HC's out the tailpipe. end of story, they still use it to this day.

but back to your setup... i honestly think your book is wrong. the TCS should have 2 vacuum feeds at least. otherwise its just a pipe going nowhere... which it is right now... just manifold vacuum to nothing.

 

[ari666]

yeah your book is totally on drugs man, that aint right at all, your "distributor vacuum spark" doesnt even go to the dizzy! i think what youre looking at is page 2 of an incomplete document.

 

[Smitty]

.. just get the genuine GMH 'Improved Performance' engine book that covers these engines (and the V8 versions too)

the whole lot is nicely laid out with drawings and schematics

its this one -

Holden Improved Performance L6 AND V8 Engines Service Manual GMH | eBay

 

[ari666]

ok ive misplaced my phone, so cant take a pic. but youre def looking at page 2.

youre looking at page 30 which is "emission hosing" but you also need to look at page 27

 

[GetToDaChopa]

Well that's great lol it's still not correct? Well maybe we ca figure what IS without buying books.

 

[ari666]

sorry, this is your page;

and yes, youll save a LOT of fking around by buying the manual. its only about 60 bucks mate, dont be tight.

 

[GetToDaChopa]

That's 2.8 ltre. Why would that manual page be wrong though, when I first bought the car he TCS module was in a loop, just like in the manual.

The last diagram you posted is not for my engine.