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Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, code P2339 - Fixed #

Posted by Sean Murphy on June 21, 2011, 4:45 pm

Year of Manufacture *: 2002
Engine Size and Code *: 2.0TDCi
( Optional ) Scanner Used: Snap On
( Optional) Fault Codes: P2339

Hi all,

Mondeo in the shop driving us nuts! Customer complained that the glow plug warning light flashes constantly, starting is harder than normal and a fair bit of pale smoke from the exhaust coupled with poor performance and reluctance to rev.

Car displays fault code P2339 - knock sensor 4 above threshold (neat seing as it only has 1)

We have:
Recoded the injectors (twice)
Renewed the glo-plugs (at customer request)
Renewed the cam sensor (we had one on the shelf so thought we'd try it)
Done an injector leak-off test (fuel looked clean - no debris in it)
Smoke tested inlet system & confirmed EGR valve sealing/operation
Removed battery, checked all earths/relays/fuses
Pulled main loom connector apart, cleaned & reassembled
Continuity tested all leads from main connector block to injectors/sensors etc

All to no improvement. Any ideas where to look next?

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Graham Bullock <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2744' width='330' height='300' border=0 style='border:none;'> on June 21, 2011, 5:39 pm, in reply to "Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Graham Bullock

Car displays fault code P2339 - knock sensor 4 above threshold (neat seing as it only has 1)

That is cylinder 4 above knock threshold.

Graham

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Mark Mcgrath <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2806' width='330' height='300' border=0 style='border:none;'> on June 21, 2011, 5:53 pm, in reply to "Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Mark McGrath

swap the injector to another position see if code moves
"recoded injectors twice" done it the correct way
coding injectors on these as been a source of much discussion
check the archives

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by martin simonsohn <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3223' width='330' height='300' border=0 style='border:none;'> on June 21, 2011, 6:04 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Martin Simonsohn

the glow plug light flashes if there is a problem with injectors

the last on i looked at with that fault was the injector faulty.

changed the injector and REPROGRAMED ALL of them.

the only problem i had was not able to see coding for numer 2 injector spoke to local specialist who said try code with same code as number 3 and drive for 20 or so miles.

did it as soon as programed all 4 light stopped flashing ran like an old cement mixer took it for drive and it got progressivly better and now all ok.

hth martin

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Sean Murphy <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1788' width='330' height='300' border=0 style='border:none;'> on June 21, 2011, 6:21 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"

Thanks for the advice guys, i appreciate any input on this one.

I've reprogrammed them once in firing order (i.e. 1-3-4-2) and once in cylinder order (i.e. 1-2-3-4) and neither has helped. I also reprogrammed all 4 each time, using the codes from the injector bodies.

Each injector looks ok on the leak-off test and each is measured at 3ohms resistance.

I'm loathed to put a £400 injector in a car unless i'm confident that is the issue, but at the moment i'm not confident which, if any, are playing up..........

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by martin simonsohn <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3223' width='330' height='300' border=0 style='border:none;'> on June 21, 2011, 8:22 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Martin Simonsohn

hi sean snap on says to be programed in CYLINDER order not firing order and yor fault code is refering to cylinder 4.

ps have a look at the egr valve

but if the pre heat light is still flashing they have not been coded make sure you have got the correct engine code entered into your snappy

hth martin

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Sean Murphy <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1788' width='330' height='300' border=0 style='border:none;'> on June 23, 2011, 7:41 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Sean Murphy

Bit more testing today on this one.

The car starts ok, but idles badly, smokes a lot (grey diesely smoke) and refuses to rev.

Fuel supply from tank to filter and filter to HP pump checked and confirmed OK (fuel filter changed just in case).

HP pump max-pressure scoped during key-on, & cranking phases (see attatched file). Key on indicates 0.5v an the fuel rail sensor which equates to around 0 PSI. During cranking the pressure is seen to rise in discrete steps up to a max of around 3.2v on the rail sensor (i was expecting around 4.5v). Ceasing cranking see's a nice steady pressure decay as i would expect and i'm eliminating injector leakage due to this. Can anyone confirm these values are ok or low as i dont have a working example to verify against?

We also carried out a leak-off test on the injectors and they all looked very nicely balanced.

Noid lights on the individual injector connections indicates all correct pulses to each injector so i'm assuming wiring & ecu are ok.

Judging by the amount of smoke emmiting from the exhaust i'm assuming the exhaust is free-flowing and not blocked. Could this be some kind of turbo fault? The vacuum actuator works fine although some smoke can be seen coming from where the actuator shaft enters the body of the turbo when revved.

Any ideas?

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 23, 2011, 7:46 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Mark Carter

Hi Sean,

The vehicle in question is a 2002, but what month was it made?

If it is before June then I think you will find that it is fitted with the remote endstage for the Injectors and the only tool to reprogram them is IDS.

Some tools will tell you that they have performed the operation but they have not.HTH

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Sean Murphy <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1788' width='330' height='300' border=0 style='border:none;'> on June 23, 2011, 9:55 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"

Not sure - i'll check it out tomorrow! Anyone with IDS in Southampton fancy having a go at recoding them?

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 24, 2011, 12:58 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Mark Carter

Sean, I am about 35/40 mins from Southampton if that helps.

We could do it PM today or AM Saturday.

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Sean Murphy <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1788' width='330' height='300' border=0 style='border:none;'> on June 24, 2011, 1:11 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"

Hi Mark,

Can you give me a ring when you are free - 07786 493246

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Darren Cotton <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1876' width='330' height='300' border=0 style='border:none;'> on June 24, 2011, 9:14 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Darren Cotton

Sean,

Few things, first you need to make sure whats in your tank....

Your pump pressure it not good in my book, and you should see around 4.5v, now that could be down to a few things, either you haven't challenged the pump correctly or you have a leak.

Here is an example of a good and bad leakage

I wouldn't eliminate your injectors at all, your capture is not very clear, but if you don't know what a good decay rate is how do you know yours is ok

"Car displays fault code P2339 - knock sensor 4 above threshold (neat seing as it only has 1)"

This code has been flagged because the delivery fuel is inaccurate. The system will listen to combustion noise through the knock sensor. your injectors need to be tested.....

HTH

Darren

Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, code P2339 #

Posted by colin jelf <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1635' width='330' height='300' border=0 style='border:none;'> on June 24, 2011, 10:55 pm, in reply to "Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, code P2339 #"
Colin Jelf

hi sean
i was just reading through this thread & i was wondering if you had checked the cam carriers are not working loose which i have seen a couple of times,but also there can be a bad connection on plug to injector found when wiggle testing.
i could be totally off track but thought it might be worth a mention
regards colin

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Michael Whitworth <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5568' width='330' height='300' border=0 style='border:none;'> on June 25, 2011, 8:25 am, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"

Hi Sean,

P2339 should clear as soon as the injector calibration factor for No 4 Cylinder (forget injector no. it is not relavent) has been entered correctly It does not have to be the right no as long as it is a valid one.

You do not have to clear the DTC the ECU clears it as soon as the above is carried out. If the code does not clear you or your equipment is doing something wrong.

Once the code is clear even if the engine is still running dog rough it will not reflag this code until it has covered some miles, (100 miles?) in order for the ECU to determine the knock threshold on that cylinder.

IMHO You need to sort out P2339 before going any further.

HTH

Mike

M.O.M. Miserable Old Manc

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 25, 2011, 12:25 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"

Hi Mike,

how right you are.

Sean came over today and I reset the Injector calibrations using IDS.

The code cleared as I knew it would and the vehicle now drives as it should (or should I
say as a Ford does

)

The early mondeo (before June 03) have a separate amp for the injectors and as I have mentioned before IDS appears to be the only tool to comm with the external amp and enter the codes correctly.

Regards Mark.

Modern cars, Its all wizardry and witchcraft

Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing

Posted by Michael Whitworth <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5568' width='330' height='300' border=0 style='border:none;'> on June 25, 2011, 12:35 pm, in reply to "Re: Ford Mondeo 2.0TDCi - low idle + glow plug light flashing"
Mike Whitworth - Administrator

Hi Mark,

Its very easy to get sucked into costly replacement parts or hrs of scoping and testing when things are not happening as you think or if you are not aware of what should be happening.

I should know I have loads of T-shirts

Although I am aware of the ICU below/behind the n/s headlamp I was not aware other tools could not carry out Calibration factor entry on these.

Having always used IDS for this task I have never had a problem (apart from confusion with cylinder and injector no.s

)

Mike

M.O.M. Miserable Old Manc

Fixed #

Posted by Sean Murphy on June 25, 2011, 6:33 pm, in reply to "Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, code P2339 #"
Message modified by board administrator June 28, 2011, 3:48 pm

Thanks to all who offered advice on this one - all appreciated.

After 'running around the houses', checking & double-checking everything, and even starting to doubt myself, the problem turned out to be an injector calibration, cured by using IDS (BIG thanks to Mark Carter for doing this).

Moral of the story is not to believe everything your scan-tool tells you. Despite doing loads of later model mondeos with my Snap-On it, apparently, wont do the early ones (although all indications were that it had done it). Made me look a bit daft but hey, at least i've learned something today and can chalk another one down to experience!

So all solved now and customer happy again.

Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 25, 2011, 6:52 pm, in reply to "Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED"
Mark Carter

Mike,
I know what you mean about being "sucked in", I too have a few of those "T" shirts !! As long as it does not happen too often then I try to call it "learning"

Sean, Happy to be of assistance. As I said to you today, it's not me being clever, its just using the right tool for the job.

Mark

Modern cars, Its all wizardry and witchcraft

Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED

Posted by Darren Cotton <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1876' width='330' height='300' border=0 style='border:none;'> on June 25, 2011, 7:56 pm, in reply to "Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED"
Darren Cotton

Sean

Do you think the code will return?

Darren

Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED

Posted by Tony Sefton <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5581' width='330' height='300' border=0 style='border:none;'> on June 25, 2011, 9:49 pm, in reply to "Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED"
Tony Sefton

AHHH WELL, ANOTHER HAPPY SNAPON CUSTOMER.

Don't forget to keep paying for those updates.

Just start deducting the expense that its cost you to sort out all of its failures, and they will soon be owing you money.

Its not until times like these that you realise that most aftermarket tools are more of a liability than an "EXPENSIVE" asset"

Even when you have several aftermarket tools. They can be a total waste of time, by the time you have plugged 2 or 3 in and failed to do the job, the Slower but more reliable Dealer tools have to come out to play.

Tony.

Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED

Posted by Dave Hill <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2783' width='330' height='300' border=0 style='border:none;'> on June 27, 2011, 9:53 pm, in reply to "Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED"

Hi Tony

Snap On does these no problem, or at least it did when I last used it.

My old Heritage (basic red brick) hasn't been updated for over 4 years & it does the pre 2003 & 2003 onward TDCI code entry no probs.

Perhaps Snap-On have messed something up in the newer software releases?

Could it just be Pilot Error on Sean's part? (Sorry Sean I might be doing you a disservice

)

It is wise (In my opinion) to enter the correction factor code, only for the offending cylinder & not all of them. As already mentioned, if you enter any "valid" code into all of the cylinders locations, then you will clear the DTC & warning light. You won't know if your method is correct or not, unless you do them singularly.

Cheers all

Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED

Posted by Tony Vamplew <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1010' width='330' height='300' border=0 style='border:none;'> on June 30, 2011, 8:47 pm, in reply to "Re: Ford Mondeo 2.0 TDCi 2002 - Low idle + glow plug light flashing, *FIXED"
Tony Vamplew

hi all i have used all the snap on scanners well red brick, solus , modis and verus had no probs after having a lesson from Mike Whitworth (many thanks) but the later updates do it differently to early ones they always tell u code in firing order but u code in injector to cyl have messed about and tried it different ways but now never fail once u understand ure machine and the way it does it, even had a discussion with Gary from snap on the other night on the subject, Tony

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