Rev Counter

[Guest oldman]

Looking to get another ecu do i have to get one with the same number as mine or will another 2ltr zetec ecu do the job if it has the same connector cheers

[Guest mcramsay]

Why do you need another ecu? I have no knowledge of ford Ecus so can't really comment on what you would need, just curios as to why you want another!

[Guest oldman]

Clutching at straws i noticed the fuel gauge was on all the time so fitted a battery isolater and a proper shelf for the ecu now the car will not start checked every thing i have a call out for a auto electrician

[IanS]

I had a sierra from the last year of production. The fuel guage was designed to stay reading when switched off, it drew no power to do this, quite a neat feature.

[Longboarder]

 

so fitted a battery isolater and a proper shelf for the ecu

If the car was running, you do work and after it won't run then it's reasonable at first to suspect the changes you made are to blame. Carefully examine each and every one of them. Incidently does the fuel gauge now return to zero?

 

I would guess that a replacement ECU should have the same part number and you will need the ignition key chip from the car the ECU came from for the immobiliser.

 

Nigel

[Guest oldman]

Thanks for answers looks like i have messed up the key is not a chipped one does the ecu need programming if i remove power from it, i have checked every thing i did and all is good

[tractor]

Look for the key sensor it is round and usually fits around ignition barrel some times people tape a key to this and hide it under dash so bypassing the immobiliser so that a different key and ignition barrel can be used

[Guest oldman]

Ok will have a look

[Longboarder]

It is possible to get an ECU with the coding removed so this may have been done with your current ECU and maybe it doesn't need a chipped key. Or as above chip coil and key are taped up and hidden away.

Or maybe EEC-1V doesn't have a chipped key.

 

Nigel

Edited November 1, 2016 by Longboarder

[cb750]

According to an article in Classic Ford the EEC-IV doesn't have a chipped key, the EEC-V does have one

[Guest oldman]

Looks like I have messed up big time had the battery off for a few days now it will not start has the ecu lost its settings

[tractor]

unlikely unless you have actually fried the ecu

[Guest mcramsay]

Before you start to panic and convince your self the ecu is faulty. Take a step back, what have you done to to the car to end up with the non start fault? Go over everything you have played with and make sure it's all correct. Have you played with any electrics and left a supply or earth disconnected?

 

If you can't find anything then check the basics, have you got a spark? Are you getting fuel?

[Guest oldman]

I have gone over every thing I have done looks good I am getting a spark and fuel to the end of the injector rail does the unit have an internal battery

[Guest mcramsay]

So if you have spark then the ecu must be functioning. As it uses the crank position sensor to work out ignition timing and thus sends a signal for fire the appropriate coil pack. You have fuel at the rail but is it under pressure or just residual of what is in the pipe, you should feel / hear the fuel pump pulse for a few seconds when you go to ignition on. On the key. If the pump is working correctly and you are getting spark then check you are getting a supply voltage on the injectors. I still do not think you have an ecu fault, but possibly an immobiliser fault which is cutting the injectors / fuel pump supply voltage.