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What Does Your Mondeo Diesel Idle At?


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#1 Z3 MON

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Posted 10 February 2012 - 07:27 PM

So the question I'm asking is:

What does yours idle at on cold, and what does it idle at once warmed?

Your Probs thinking where am I going with this but basically on mine if just lightly lean my foot on the pedal, ta da it stops hunting so I'm thinking maybe its set wrong ???


Cheers,

Dave

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#2 pragmatix

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Posted 10 February 2012 - 07:45 PM

About 800 rpm hot or cold

#3 Z3 MON

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Posted 10 February 2012 - 07:50 PM

I knew it haha mine isles at 720-760 (its hunting) and idled at 1000 this morning with snow everywhere.

So how do I adjust the idle on these beasts??

#4 1djspikey

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Posted 10 February 2012 - 09:27 PM

mine idles just over 800rpm when cold and exactly 800 rpm when warm but i have notice since the problem with my slightly leaking injector that the engine is hunting slightly though and when under driving load it starts to rattle on the injector then soon as i give it a boost off the turbo it goes in to limp mode.


has for ajusting your idle im not sure i think you have to go to garage and put the car on the laptop to ajust it but if its idling low could you have a faulty airflow metre as i think that can cause idling problems.
you can try giving the airflow metre a clean with cotton buds and thinners but be very carefull not to break the elements inside it no harm giving it a try 10min job !!

john

#5 Z3 MON

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Posted 10 February 2012 - 09:45 PM

I'll give it a go. I'll let you know how I get on

#6 Z3 MON

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Posted 10 February 2012 - 10:56 PM

Although I'm more leaning towards the likley hood of it being a stretched cable. My brother had the same sort of issue on his focus so no idea why I didn't think of it till now lol

#7 1djspikey

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Posted 11 February 2012 - 12:51 AM

Although I'm more leaning towards the likley hood of it being a stretched cable. My brother had the same sort of issue on his focus so no idea why I didn't think of it till now lol


Theres no accelerater cable on mondeos its a electronic non sure on what you call it though


john

#8 Z3 MON

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Posted 11 February 2012 - 08:55 AM

Hmm ok might be a bit hard to adjust the cable then lol

#9 Z3 MON

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Posted 12 February 2012 - 12:55 PM

Could this be a coil pack issue ??

#10 pragmatix

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Posted 12 February 2012 - 12:56 PM

Could this be a coil pack issue ??


Not on a diesel, no coil pack

#11 Z3 MON

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Posted 12 February 2012 - 01:59 PM

Is there an equivalent to a coil pack??

#12 pragmatix

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Posted 12 February 2012 - 02:25 PM

Is there an equivalent to a coil pack??


No as there is no source of ignition an a diesel, it fire on compreession, the only source of heat outside that is the glow plugs which are only really needed to help starting in very cold temps, the modern high pressure fuel systems like Tdci dont need them for normal starting

Thing that will will cause poor idleing range from dirty air cleaner, dirty fuel filter, fuel system pressure, MAF, TDC sensors, faulty injectors, leaky exhust manifold dirty EGR valve, splits in the many and various vacuum pipes to name but a few

#13 Z3 MON

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Posted 12 February 2012 - 02:42 PM

Ok, sorry I've never had a diesel before, I studied mechanics but this was all petrol based. There is clearly a miss fire on it now. I have so far: cleared egr, use BG244, checked the injectors for leakage, checked oil. Checked air filter. The oil is a bit dirty as is the air filter but it was apparently serviced 3000 miles ago???

#14 pragmatix

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Posted 12 February 2012 - 03:29 PM

Oil on a diesel will be dirty as soon as you turn the engine over after the oil change, the important thing is that its not gritty, the air filter shouldnt be that dirty in 3000 miles is thet dust dirty or oily dirty, if its oily dirty you have possible a breather or crankcase pressure prob

#15 Z3 MON

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Posted 12 February 2012 - 05:09 PM

It's black but there was also a lot of leaves ect in there(air box/filter) Although I did notice some grease/oil from the pipe that goes from the crank case to the induction system. Even if I hold it at 2000rpm you still get a noticeable miss fire although its worse on idle by a fair bit.

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