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Little Megger
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Wouldn't want you to go down a rathole on this.
Your 2001 Mondy isn't OBD2 compliant,, it probably isn't even OBD1. Diesels didn't have to be till much later than petrol cars. Around 2004 they were, but there was a cross-over period too. But to read codes properly on your Mondy you'd need a cable
and software that read Fords. In the UK, the cheapest option is a Tunnelrat electronics cable and software called Forscan. (free download for Windows, about a fiver for Android) There's another bit more expensive one called Vlinker, but I know nothing about that one. Forscan is maintained and updated, with a website and loads of support. Check it out if you want.
Here's an example for you. There was someone who kept getting a flashing glowplug light, who read the codes and nothing came up with his generic code reader, I told him to test it by generating a code, which was to disconnect one of his injector connectors, or to unplug the fuel rail pressure sensor, both of which DO generate an error code. His generic reader didn't pick them up, but when he went out and bought a Tunnelrat one, he could see them.
 
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Mondy MK3 130HP Turbo Diesel
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95 Posts
Discussion Starter · #22 ·
Wouldn't want you to go down a rathole on this.
You're right, I don't want to go down that rat hole.

Ran around all morning looking for the relay in the engine bay's fuse box. Finally got one. Replaced it and... nothing changed.

All I can say is that I'm glad I live in the land of fabulous red wine because that's all I've got left right now.

I'm done.
 

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Little Megger
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Well, don't forget my idea of in turn disconnecting each injector to see if the smoke clears up.
If it does with one particular one, then Bingo! you've hit it.!
 
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Mondy MK3 130HP Turbo Diesel
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Discussion Starter · #24 ·
Well, don't forget my idea of in turn disconnecting each injector to see if the smoke clears up.
If it does with one particular one, then Bingo! you've hit it.!
Yes, I will get onto my partner's nephew and throw money at him to work his magic and fix it. :) :) :)
 

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Mondy MK3 130HP Turbo Diesel
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Discussion Starter · #25 ·
Oh! News just in, there were TWO codes. I was only told about one.

So there's the P1631, okay, got it.

As an added bonus, I have the dreaded P2336...

I wish I had known. I'd pinned all my hopes on the simplicity of the P1631. No wonder the 'cure' didn't work yesterday.
 

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Little Megger
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OK, P2336 = cylinder #1. The only way to clear that code is to re-enter the injector's 16-digit code into the ecu. Now, with your 2001 Mondy, you won't be able to do it with a standard OBD reader. You def. need a Tunnelrat one running Forscan. Also you need to know that with the early models you can't READ the codes already in ecu memory, only write them. If you try to read 'em you'll get nonsense back. So, maybe cyl#1 injector is causing not only the glowplug light, but also the smoke. You can attempt to disconnect it and see if the smoke clears up. Just to repeat, you can't recode with a bogstandard code reader even if it appears to goes thro' the motions of doing it, apparently it tries to write to the wrong memory addresses.
See this:
 
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Mondy MK3 130HP Turbo Diesel
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Discussion Starter · #27 ·
I think this may be a job for a specialist, because I am not. I'll have to think about the costs involved.

To me, she's running rich. There's fuel pooling overnight and that's causing the smoke and juddering first thing when she's cold.

When she's a little warmer, she's almost perfect, apart from a lag where the turbo usually kicks in. But she runs beautifully once she's up to speed.

Thanks for the advice <3 I really appreciate it.
 

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Little Megger
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Is the glowplug light on the dashboard flashing all the time? That P2336 code will put the car into limp.mode so you won't get the acceleration of turbo kicking in. I ran my 2002 Mondy like that for 3 years until I was able to clear the fault (mine was p2338, cylinder #3, but same error as yours:knock threshold) once the limp mode was cleared, I had to learn how to drive it all over again!
btw, these early models are known as 2-box versions, as they have a seperate ECU and ICU,, the later versions, around '04 had a single combined ECU.
ICU = Injector control unit
ECU = Engine control unit (?)
 

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Mondy MK3 130HP Turbo Diesel
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Discussion Starter · #30 ·
Is the glowplug light on the dashboard flashing all the time? That P2336 code will put the car into limp.mode so you won't get the acceleration of turbo kicking in. I ran my 2002 Mondy like that for 3 years until I was able to clear the fault (mine was p2338, cylinder #3, but same error as yours:knock threshold) once the limp mode was cleared, I had to learn how to drive it all over again!
btw, these early models are known as 2-box versions, as they have a seperate ECU and ICU,, the later versions, around '04 had a single combined ECU.
ICU = Injector control unit
ECU = Engine control unit (?)
Yes, the glowplug light is flashing all the time.

Good to know you ran it like that for three years, I've been hesitant to drive her for too long, worried that I'll end up having to get a towtruck.
 

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Mondy MK3 130HP Turbo Diesel
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Discussion Starter · #31 ·
Just out interest is it smoke like in this video ?

Not the first bit of smoke.

And does your engine rock like it does in the video?

The smoke looks very similar but I must admit I haven't looked if the engine is rocking. I'll check it out today. The noisy engine is the same, but mine shudders. We took a video of it yesterday. I'll upload it onto youtube and post the link here. BRB.
 

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Mondeo mk3 tdci titanium 2006 170k miles + mondeo mk3 2004 st tdci 123k miles
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It does look similar. Mine would only smoke at a 1250rpm . Any more/less rpm and it would be clear.

You could swap injectors around to see if it brings up a differant fault code . If it does just replace that 1 injector
 

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Mondy MK3 130HP Turbo Diesel
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Discussion Starter · #34 ·
It does look similar. Mine would only smoke at a 1250rpm . Any more/less rpm and it would be clear.

You could swap injectors around to see if it brings up a differant fault code . If it does just replace that 1 injector
Yes, that is something I'm thinking about. I was watching my fave dude last night on youtube (
) and now that I see how it works, I understand the whole process.
 
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