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Only 1 key, worn key cylinders, pre 2L engine swap


Flesh Gordon
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I need to change engines soon as the head gasket in the 1.6 is on it's way out

I'll be going for the 2L Mondeo engine

 

 

 

Thing is I needed to get the keys and locks fixed regardless

as it is, I've only one key on the Escort and it's fairly bent and starting to wear out too ,

 

I've no other spare keys, hatch door can't be opened with the key as the cylinder was vandalised

and even to start the car the key will only enter in one way due to the curve

 

 

 

In my case would it work out better If I kept the Internal PATS ECU from the later mk1, early mk2 Mondeo I'll be using and have the Escort run from that new key/lock set?

 

If I do is it a job for ford only or could it be done privatley?

 

Cost wise I know it won't be cheap either way

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PATS Mondeo ECU won't work in an Escort without some serious frigging around. I spent some time looking into this so to enable a straight PATS to PATS swap, no pin changes, just reprogramming, and didn't get very far. I even had a factory reset ECU which recognises the first three keys you put in automatically and this wouldn't work either. I came to the conclusion that the Escort and Mondeo PATS systems differ (3 vs 4 wire) and left it at that.

 

I think SteveB has looked into some PATS stuff beyond where i've gone, so might be worth asking him to look at this thread.

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You can use TAXI or TELL ECUs and keep PATS when you do the 2L conversion. You'll need the mondeo transceiver and key(s) as well. The escort wiring goes to the same pins on the ECU but all wires are brown so you'll have to trace through (as I can't remember the escort plug pin layout).

 

From the mondeo transceiver white/green goes to pin 5 on the ECU, green/orange goes to 38, yellow/green goes to 41, and the 4th wire black/green goes to chassis ground somewhere.

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I think it may have been a TAXI ECU I was doing my testing with, and if so it's still sitting there waiting to see 3 fresh keys. If you want to do some testing with it you're welcome to it.

 

I'm using TAXI myself. Because everyone goes for DEWY, DESK or DEEP for their conversion, I managed to get hold of one with transceiver and a red key for £20.

Edited by SteveB
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I'm using TAXI myself. Because everyone goes for DEWY, DESK or DEEP for their conversion, I managed to get hold of one with transceiver and a red key for £20.

 

By using, do you mean in a car? If so did it require any wiring changes other than the PATS transceiver?

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I'm using TAXI myself. Because everyone goes for DEWY, DESK or DEEP for their conversion, I managed to get hold of one with transceiver and a red key for £20.

 

By using, do you mean in a car? If so did it require any wiring changes other than the PATS transceiver?

 

In a car. The wiring for the mondeo and escort are pretty much identical - when you compare the two the differences are just the bits that are missing. No guarantees, but just drop the ECU in and wire the transceiver - done.

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In a car. The wiring for the mondeo and escort are pretty much identical - when you compare the two the differences are just the bits that are missing. No guarantees, but just drop the ECU in and wire the transceiver - done.

 

I think I got to pretty much the same place as you with regards to wiring investigations back when I looked at it. The missing component back then was the Mondeo transceiver. I'd spent a reasonable amount of time on it and decided it wasn't really worth any further effort.

 

As you say, the core pins are pretty much the same throughout all the i4 ECU's, only changing for internal or external PATS (injectors etc).

 

It might be worth someone else trying to do this conversion and if it works, document it as a better alternative to using the old '93-94 ECU's.

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  • 4 months later...

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