Hi Folks, just gotten my first cosworth after years of rst's etc... having a few issues with it hopefully someone will be able to shed a bit of light on them...

1st up, car idles the whole time at 2k.... however if i unplug the icv then it will idle as normal? NOW SORTED

2nd, Temp guage does not work atall... any idea where where the sender is to that? head/radiator? NOW SORTED

cheeRS

also just found the centre bush in my prop is shafted, any idea where these can be sourced from? will i need a complete bearing/rubber bush?

 

Check the blue plug at the rear of the head on the right hand side isnt off or broken, That was giving me the same idling issues.

As for temp i think its a wire/plug below the blue plug but i could be wrong

 

If still all standard the sender unit wire is at the front drivers side of the head!

 

ok sorry fellow essex boy, thought it was towards the rear lol.

 

4x4 its at the rear, 2wd front

 

If you've just got it, I would recommend replacing the CTS or coolant temperature sender, NOT to be confused with the gauge sender, which as said on 2wd is at front of head near the shiny silver pipe that goes behind the ex manifold to the rear, it has a single wire to it.
The CTS is at the rear of the head other side under the inlet manifold, if this is saying it is too cold it will raise the idle for a cold engine.
tabetha

 

yea i've just gotten it, been sat for 6 years so giving it a full service, belts change etc. i'll give that a try, thanks folks

 

also just found the centre bush in my prop is shafted, any idea where these can be sourced from? will i need a complete bearing/rubber bush?

 

Try cleaning ISCV, although may be bad setup.

Martin

 

The iscv doesn't need cleaning as it works, this is shown by the fact that it is causing the high revs when connected, but idles ok when disconnected, the clue is finding out what is telling the valve to raise the speed.
tabetha

 

Agreed^