56mm t body

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 12:56 am

ok mate will give that ago. Is it still ok if i get those brackets from you John? Can come over and pick them up.

Cheers
Craig

Victor Meldrew · Post by **Victor Meldrew** » Fri Sep 08, 2006 12:58 am

craigs135s wrote:ok mate will give that ago. Is it still ok if i get those brackets from you John? Can come over and pick them up.

Cheers
Craig

Forgot all about them... PM me your address and I'll send them to you. Father in-law terminaly ill so cant make too many plans for now....

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 12:59 am

sorry to here that John. You have pm.

Cheers
Craig

hiscot · Post by **hiscot** » Fri Sep 08, 2006 8:11 am

craigs135s wrote:it was a plastic one that was on it. Only thing is the tb is closed fully and its still at 3 rpm is that right?

Cheers
Craig

check the throttle stop (screw) if not did you replace all the vacume hoses from the pellium and the breathers, look for a air leak
is it sealed ok ect sospect its drawing air in from someware

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 10:26 am

thats what my mate thought as well but cant see where the air would be leaking from. All the pipes are fairly tight.

Cheers
Craig

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 1:25 pm

Tryed covering the holes and its still reving its head off. Any other ideas or will i jsut put the old one back on.

Cheers
Craig

Rich H · Post by **Rich H** » Fri Sep 08, 2006 1:35 pm

To clarify things:

The engine idle speed is governed by the IACV. If you pull off ht epipe and stick your thumb over it the engine should die (Take the bigger pipe off and cover the engine end not the TB end) If it doesnt then there is a serious leak somewhere as it's getting air from somewhere.

Check the MAP sensor is attached, the fuel pressure regulator is plumbed in and there is a black bung in a red collar in the top cnetre of hte manifold (if plastic) Check the manifold is tight to the head and there are no obvious leaks.

When you say the throttle is closed is it hitting the stop or is it physically shut? There aren't any holes in the butterfly valve?

You mention a big square hole, are you sure this is blanked off properly?

Rich H · Post by **Rich H** » Fri Sep 08, 2006 1:40 pm

A pic, the finger(!) is pointing at the IACV pipe you need to block off. On the other side is another vacuum pipe that should be fitted. On the other end is the MAP sensor pipe and the FPR pipe should both be attached and leak free. the Red bung is in the centre and just pushed in.

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 1:42 pm

sorry Rich whats the IACV??

realy not good at this tec stuff.

Cheers
Craig

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 1:47 pm

sorry posted that before i seen your pic. rite will go and have a go.

Cheers
Craig

Rich H · Post by **Rich H** » Fri Sep 08, 2006 1:48 pm

Idle Air Control Valve. Follow the finger...

It is a motor operated bypass valve notorious for being rubbish and gunging up with greasey mess. Pull the pipe off and stick your thumb over it. If it dies the IACV is bunged up with crap, if it don't then the throttle butterfly is open or you have a leak.

The IACV is held in with mini torx bit screws and then just pulls out. The end should be shiney steel, yours (Like mine!) will be manky as hell.

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 1:55 pm

ok mate pulled off the pipe and coverd the hole where you finger is the revs droped to 2 rpm but did not cut out. So i must have a leak yes?

Cheers
Craig

GregR · Post by **GregR** » Fri Sep 08, 2006 1:58 pm

RICHARDHUMBLE wrote:Idle Air Control Valve. Follow the finger...

Laughed my ass off there mate

Rich H · Post by **Rich H** » Fri Sep 08, 2006 4:23 pm

Right I have a similar problem it would seem, I think that it is because the throttle cable is very long and draggy so the spring isn't quite up to closing the butterfly totally. It looks closed and is on the stop but a slight tap closes it and the revs drop. I have backed off the stop screw a bit more and it seems to have worked but IIRC yours only has a spring on one side.... Might be worth dismantling it all and putting another turn of preload onto the spring so the butterfly snaps shut a bit more positively. This *may* help.

With the IACV shut off and it doesn't die then you have a leak....

Rich

craigs135s · Post by **craigs135s** » Fri Sep 08, 2006 10:13 pm

all sorted cheers rich. The butterfly wasnt shuting all the way. Ajusted the screw moved it back and forward a few times and wallaaaa we have 1rpm again. Thanks for your help on this one mate.

Cheers
Craig