I have fitted a 2.0ltr Zetec silvertop to my mk3 Escort with Mondeo Mk2 Management (PATS).

I have a few questions I'm hoping you lot can please shed light on.

1) Is it possible to read the fault codes without using a reader (many other cars including older Fords will give flash-codes through the management light if you bridge to wires in the diagnostic port)

2) What purpose does the clutch pedal switch serve? (is it used to select options when in 'diagnostics mode'? Rev-limiting when the clutch pedal is depressed to protect the engine?)

3) For some reason the management system is permanently sending a signal to the ISCV to hold it fully open resulting in an idle speed of around 2,000rpm. When I unplug the ISCV the engine cuts out. I have fitted a temporary spacer to the throttle stop to hold the butterfly valve slightly open and now with the ISCV unplugged I have a rock steady 900RPM idle. As soon as I plug the ISCV in again it rockets back up to over 2,000rpm. Does anyone have any ideas what could be making the ECU tell the ISCV to go fully open?

Thanks in advance for any help.

Regards,

Smiler.

 

Have you fitted the speed sensor to the gearbox (assuming you've kept standard mk3 BC gearbox)? This could cause the ISCV issues

 

Yes, it's fitted and appears to be working. There are certainly no fault codes raised regarding it.