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"engine Judder" Around 1800 Rpm


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#1 Randallsfocus

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Posted 10 April 2014 - 04:44 PM

Hi this has probably be mentioned before. I've got a 2.0 tdci 2009 model, and it seems to judder at 1800 rpm while driving, similar to how a petrol engine would be when it has a misfire. The car is in a suitable gear so it's not labouring. No warning message comes up, any ideas?

Many thanks




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#2 FOCA

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Posted 10 April 2014 - 06:00 PM

Probably the "flat spot" caused by the EGR system (if it gas not been disabled or a soilid blanking plate fitted) 1800rpm is right in the "EGR operation zone"

 

Your engine runs well/ smoothly on clean air/ oxegen, once burnt exhaust gasses are injected into the inlet (via the EGR valve), not so smoothley, as the oxegen has already been burnt, this means there is less oxegen to make power,

 

If you "drove through" the "flat spot" at full throttle (redlining it through the gears) it would be less noticable, but at part- throttle, it can be quite annoying  

 

If you already have a solid EGR blanking plate fitted (as many FOC members have) it could be- a worn DMF, injectors or a faulty sensor, some of these things should show up in fault codes, (on a reader, anyway) though  

 

PS - the EGR valve deposits carbon/ gunge into the inlet, and often all over the inside of the inlet manifold, worth getting this cleaned out (once blanked with a solid plate, this stops)



#3 Randallsfocus

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Posted 10 April 2014 - 09:34 PM

Cheers, is blanking off the EGR a difficult job? Do you need to have the sensor turned off etc?


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#4 zeglover

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Posted 10 April 2014 - 09:59 PM

I have done it on the 2005 engine don't know if it is the same but it was very easy it is at the back of the engine just loosen 2 bolts 10mm and slide it between the the egr valve and a silver pipe tighten up and all done. It put a light on on mine but did not go on to limp mode.


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#5 Randallsfocus

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Posted 11 April 2014 - 08:53 AM

Is there any way to clear the light? Not had experience with clearing dash lights


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#6 zeglover

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Posted 11 April 2014 - 05:00 PM

You can use a code reader not 100% sure which one will be for your car I don't want to give wrong one. I just leave light on


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#7 phookoo

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Posted 15 April 2014 - 08:34 AM

I thought it would be worth mentioning this as this juddering was happening to my 09 1.8 tdci when I first bought it a few weeks back. Apparently, it can be quite common for the injectors to lose 'sync' with the engine. I'm not savvy enough to explain it more technically than that, but it's apparently a 5 minute fix for a garage. Obviously 5 minutes doesn't mean cheap, but I was told that 70-100 quid is a rough estimate. Luckily the garage I got mine from was liable as I'd not taken ownership at that point, but my issue sounds so similar to yours that I'd be interested to know if yours is the same.

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#8 Randallsfocus

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Posted 16 April 2014 - 08:58 PM

I plan to do the EGR blank off soon so will post the results.



#9 FOCA

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Posted 16 April 2014 - 09:36 PM

I plan to do the EGR blank off soon so will post the results.

Just as a "heads up" although manymembers have reported, smother running, less smoke, and slightly better pick-up from lower revs some have reported a drop in mpg,  

 

It may be that the (slightly) better performance has a MPG impact, so the non-EGR blank needs to be compared like for like, with the same level of performance/ acceleration/ driving style  

 

Blanking the EGR may affect  the MPG readout on the trip computer (which can be notoriously inaccurate) best to use traditional methods (brim to brim etc) and measured by fuel amout, as fuel cost can go up (and up) so you get less and less fuel for the same money

 

And driving conditions, temp /  etc would have to be the same to make a fair comparison

 

Let us know how you get on

 

PS - you probably know already but the plates with the holes are no good (defeats the purpose) and the solid plates are best     



#10 Randallsfocus

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Posted 17 April 2014 - 08:10 PM

Just as a "heads up" although manymembers have reported, smother running, less smoke, and slightly better pick-up from lower revs some have reported a drop in mpg,  
 
It may be that the (slightly) better performance has a MPG impact, so the non-EGR blank needs to be compared like for like, with the same level of performance/ acceleration/ driving style  
 
Blanking the EGR may affect  the MPG readout on the trip computer (which can be notoriously inaccurate) best to use traditional methods (brim to brim etc) and measured by fuel amout, as fuel cost can go up (and up) so you get less and less fuel for the same money
 
And driving conditions, temp /  etc would have to be the same to make a fair comparison
 
Let us know how you get on
 
PS - you probably know already but the plates with the holes are no good (defeats the purpose) and the solid plates are best     


I have read the recent posts regarding MPG figures, and it has put me in to minds about fitting one.

I suppose the best thing is to try and see. Any recommendation for a good supplier?

Many thanks


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#11 FOCA

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Posted 19 April 2014 - 03:41 PM

There are plenty on ebay - try and pick one with a decent thickness - stainless steel are best - the aluminium ones can melt through and mild steel ones can rust - some vendors are still selling ones with holes in them which are obviously best to avoid  

 

A "slot in" type is easier to fit

 

the 2.0L is probably similar to the 1.6L to fit - there is exellent advice on the forum and Lenny has done a fitting guide



#12 Randallsfocus

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Posted 19 April 2014 - 08:15 PM

Many thanks


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#13 painterman

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Posted 20 April 2014 - 03:24 PM

is cleaning the egr valve a possibility? I am having same issues with my 1.8 tdci , I used to have a Renault laguna with same problem and I took off egr valve every 6 months and cleaned it and it made sooo much difference .



#14 Randallsfocus

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Posted 21 April 2014 - 07:54 AM

is cleaning the egr valve a possibility? I am having same issues with my 1.8 tdci , I used to have a Renault laguna with same problem and I took off egr valve every 6 months and cleaned it and it made sooo much difference .


Hi, to be honest I've never tried cleaning the EGR valve. I've seen the wynns EGR cleaner spray where you spray into the induction pipe after the air filter. But not sure how effective it is.


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#15 painterman

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Posted 21 April 2014 - 08:16 AM

don't know how easy it would be on a ford but laguna egr was right at the front and I just took it off and soaked it in petrol all night and got all carbon deposits off with a toothbrush and it came up spotless with spring and plunger like new.



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