mk1 focus ecu swap- easy or dealer job

[steveo3002]

ok so ive posted elsewhere , my mk1 focus 1600 petrol has a erratic temp gauge but doesnt appear to actauly be overheating

 

google has threads suggesting a new ecu cured it 

 

can i buy a used ecu from the correct engine code and use that ?  or main dealer programme jobbie

 

help please really fucked off with it 

[twosmoke300]

A new ecu would need to be coded .

You would be better off sending it to some one like ECUTesting .They would confirm your fault and repair your unit . This wouldn't need any coding / programming

[scaryoldcortina]

ECU is coded to the keys, you can diy it IF the ecu comes with at least two keys. If not you need either tech2000 or a licenced copy of forscan.

 

Erratic temp gauge might be the clocks starting to misbehave, which is actually more common, they are plug and play so get a £10 scrapyard set and change them first.

[twosmoke300]

What he said !

[steveo3002]

its had a brand new set of clocks 18 months ago

 

theres plenty of ecu with one key on ebay...wont one key do it?

 

i have a laptop version of forscan , dont really know wether it does coding or no?  what would recoding be under 

[steveo3002]

anyone local that could give me a hand to code it ?  cambridge/sudbury/bury st eds 

[sierraman]

I've an ECU, 1 key and a central locking module from a 1.6LX Estate 2001 if that's any good to you.

[steveo3002]

I've an ECU, 1 key and a central locking module from a 1.6LX Estate 2001 if that's any good to you.

just orderd one from egay...cheers anyway

[twosmoke300]

Good old google diagnostics !

[steveo3002]

Good old google diagnostics !

what do you suggest i do?   pay someone £80 an hour to do what ive done so far?

[twosmoke300]

personally I'd send the ecu away to be tested and repaired . Ecu faults are really rare to be honest and always a deeply suspicions diagnosis .

[steveo3002]

well ive gone with a ebay one...might work /might be a waste of money but i figured £35 isnt too bad to try 

 

where would i send an ecu to be repaired anyway?

[twosmoke300]

As I said earlier in the thread - ECUTesting

[steveo3002]

righto ebay ecu worked with its key , hasnt fixed the problem

[Jazoli]

Have you changed the coolant temp sensor or thermostat?

[steveo3002]

yes !!

 

engine feels and behaves normal - i "think" its thinking its hot when its fine , will also go back to normal on the gauge if i pull over and switch the  ign on/off

[twosmoke300]

These have a coolant temp sensor and cyl head sensor dont they ?

[steveo3002]

yes its a cylinder head temp sensor , they fit in the metal and dont contact the coolant 

[SiC]

When running an OBD scantool in this state, does the temperature on the scantool match roughly what the dash is showing?

[twosmoke300]

It will have a normal coolant temp sensor too - have you checked / changed that ?

[sierraman]

So is it actually overheating?

[steveo3002]

It will have a normal coolant temp sensor too - have you checked / changed that ?

pretty sure it does not ...happy to be proved wrong though

 

doesnt to my mind appear to be overly hot at any time

[twosmoke300]

Pm me your reg and I will check on autodata . Pretty sure that era of ford used the cyl head sensor as a backup/ early warning device but still had a normal wet sensor . I seem to remember one being near the plugs somewhere

[steveo3002]

When running an OBD scantool in this state, does the temperature on the scantool match roughly what the dash is showing?

 

yes pretty much