hi can anyone help i have a 52 plate focus st yesterday whilst driving funny grinding noise from under the bonnet after closer inspection it is a metal box with one block of wires coming out of it it is bolted onto the bulk head right behing the inlet manifold i disconnect it the noise stop straight away car still ran ok does anyone no what its called thanks in advance.

stuart

 

a.b.s unit maybe? any brake pipes coming from it?

 

no brake pipes just one plug with about five wires on it it is quite high up on the bulk head

 

get a pic up mate, someone should be able to identify it.

 

 

Is there a cable running out of it too the variable length manifold runner ?

 

Its the IMRC control box. There is a cable coming out of it that connects to the inlet manifold under the throttle body. What happens is that there is a plastic lever on the inlet that the cable attaches to. Part of the lever breaks off causing the cable to retract too far, thus stripping the gears inside that box. Have a look under the throttle body, you will see a cable flapping in the breeze that should be connected.

Ford have released an uprated plastic lever that is stronger than previous versions as it is a known fault.

You will need a new IMRC box and what is called a DSI clip!

Rich

 

Thank you i will know source one.