Hi, the wife has a 2011 1.6 petrol focus and few weeks ago it started spluttering, went garage had new coil pack and leads and spark plugs, was fine for couple weeks then started doing it again so they put 2 new lamba sensors in, was fine again for about a week, took it back and the owner of the garage was taking it home and back for last 2 weeks and not played up once, they checked the pcm and there is no sign of water in it as ford said this is a common problem on the mk3's, more often than not when we use the car and stop at a junction when you pull away you get about half the acceleration, turn it off and back on and most of the time it'll drive fine after but the last time had to turn it off 4 times then eventually had acceleration, sometimes engine light will come on but is very rare, any ideas where to look next will be appreciated as the garage are at a loss, thanks 

57 minutes ago, robc1 said:

sometimes engine light will come on

If the engine management light has been on, what DTC has been logged ?

Don't try reading the codes with a generic code reader as it will not see Ford specific codes.

1 hour ago, unofix said:

If the engine management light has been on, what DTC has been logged ?

Don't try reading the codes with a generic code reader as it will not see Ford specific codes.

Hi thanks for the reply, first of all the codes were saying about oxygen sensor that's why the 2 front ones were replaced but if the engine light comes on now it won't stay on and nothing is stored on the ecu, the garage owner is a good friend hence why I left the car with him for the past 2 weeks for him to try it and each time he has its been fine, he asked ford about a pcm update and they said no outstanding update for the car, don't know if it's a possible ecu fault

It sounds like you're having a similar issue I'm having.

I took it to a garage and they reset the ECU and it's early days, but it seems to have sorted the issue.

Have a read of my thread.

 

Hi, Wednesday morning was the worst, I started it and it was like it was missing really bad, the engine light flashed 5 times and did that 4 times in total had a rotten egg smell from the car and then the car ran fine, it's had new plugs, coil pack, leads, new cat, maf sensor, o2 sensors and a new bcm from ford as it threw up 4 codes for the bcm, altogether spent £1600 and still no closer because sometimes the traction control light comes on, thanks

for the cost incurred - you may as well buy a decent cable (20 to 65 quid) and put a copy of forscan on a laptop

u may as well buy one decent one (cheaper and much less stress than buying three rubbish ones each time slightly better but still making up lies) https://www.amazon.co.uk/vLinker-Bluetooth-Diagnostic-Android-Windows/dp/B088LW211V

there MUST be error codes if its running that bad - that one above should get you a phone app and the laptop working (so long as the laptop is modern enough to support Bluetooth)

 

I have multibrand android app for 5 quid - works well after the later updates this year for basic stuff  https://play.google.com/store/apps/details?id=de.wgsoft.scanmaster&hl=en

on the PC can have a real tool

https://forscan.org/download.html

 

 

 

Sounds like a lot of hardware being thrown at it.  Has the wiring been tested at all?

Yesterday I did what someone told me to do and disconnect the battery, left it 30 minutes and left it ticking over for 20 minutes, took 8t for a drive and it sputtered once when I got in some traffic, but also noticed electric windows on both driverside don't work and buttons aren't lit up, central locking doesn't work on them 2 doors and mirrors don't fold in when you lock it, my friend is going to have it back in his garage after new year and take throttle body off and inlet manifold, only good thing is he doesn't charge me labour, been trying to find someone around the weymouth area that can plug it in and check graphs but no luck so far

Sounds like the BCM may not have been setup correctly for your car.

The door modules are fused separately, so you can check the fuses if you like.  F5 & F7 in the boot fusebox.

its NORMAL if you take the battery off any modern car that windows need resetting - nearly all cars you do it by winding them down a bit, then HOLDING the up button and when it reaches the top KEEP holding the button till you hear a clunk (less than 2 second or so usually) - this resets the anti-trap safety feature, you need to do it one by one for each opening window (and the sunroof on my non ford car)

I'd try the window reset and see if the door control modules behave - otherwise whomever fitted the BCM sounds like they have not used the correct part and or set its configuration up correctly 

the petrol car throttle reset (is meant to be completed whenever the battery is taken off) - with a COLD engine, with the battery out of the circuit, short the pos and neg battery terminals together to drain any capacitors for 30 seconds - reconnect the battery as usual - with all consumers off (lights, radio, wipers, heated screens and blower motor etc.) without touching the throttle pedal at all - start the car and allow it to idle from cold until the cooling fan cuts in - allegedly it sets up the fly by wire throttle...  I did this on her's and the car was very different, with much better throttle response and the car feeling a lot more lively (I can't believe there isn't a quicker diag tool set up to save petrol and get the car out the workshop)

this WILL NOT solve the emission control / engine management fault you have - it can help a bit re fault codes that come and go - but ones that are not currently at fault forget themselves after three clear key on off cycles anyway

 

Well the wife had to use it earlier as I wasn't home and she came home not long ago and said it drove really nice (didnt travel very far), no sputtering, no lights on dash, both the driverside windows still don't work nor do the switches light up when lights are on BUT all 4 doors now lock and mirrors fold in

did u spot this bit in my post ...

 

its NORMAL if you take the battery off any modern car that windows need resetting - nearly all cars you do it by winding them down a bit, then HOLDING the up button and when it reaches the top KEEP holding the button till you hear a clunk (less than 2 second or so usually) - this resets the anti-trap safety feature, you need to do it one by one for each opening window (and the sunroof on my non ford car)

Yeah tried that, passenger side works fine and switches light up aswell,just the 2 on driverside tomorrow I'll just check all the fuses