Thats strange, to have thre egr valves fitted in such a short space of time. The egr is monitered by the ecu and should it start sticking this should flag up a fault code.
If yours has not then theres a problem with the units or a software issue in your ecu.
Ive just cleaned one out on a 2008 vauxhall which had a fault code relating to the egr. It was almost compleatly blocked with very little movement.now cleaned, refitted and fault codes removed all is fine

hi super spark even l/rover are struggling with this one as every time its back with this flat spot/ hesitation at 2,000rpm and a drop in power no fault codes are stored but the dynamic pressure test says low pressure in inlet system at idle i was wondering if the maf sensor was faulty and was not telling the engine to burn the fuel correctly via the ecu its never had a maf sensor put on it  rainy-city
xs

I'm reading this with interest, mine seems much better but whether it was the last thing I done, the first, a combination or just luck I don't know. There is still a hesitation at 2k revs but nowhere near as bad as was, it is still there though so it's not fixed..........yet. I did notice today that when accelerating from low revs, once the engine picked up and started to pull the car was vibrating badly until it got past this dodgy spot in the rev range.

Hmmmmm, strange one this is. The MAF sensor could give problems without flagging up a fault code, can you get hold og one to try it? as buying individual sensors can work out expensive and may not be the underlying problem. Did landrover try flashing the ECU with the latest software ??? You know the more complicated these cars get the bigger the headache it is to fix them when they go wrong.
I dont know how machanically minded you are but I would start to check for loose items etc on the engine and arround the engine bay.I would now be checking tightness of fuel injectors, fuel rail etc making sure theres no leaks. Check all the wiring harneses are correctly fitted and are not damaged. Are the hoses all ok, pay attention to the EGR valve etc
Are the engine earth straps bolted tight, battery terminals tight.
These things and many more will have to be checked as landrover will only look with the fault code reader.
When my car had problems with the steering etc they couldnt find anything wrong so I fould the faults and took it back to them, they were a little embarrised that I seemed to know more than they did lol.

superspark wrote:

Hmmmmm, strange one this is. The MAF sensor could give problems without flagging up a fault code, can you get hold og one to try it? as buying individual sensors can work out expensive and may not be the underlying problem. Did landrover try flashing the ECU with the latest software ??? You know the more complicated these cars get the bigger the headache it is to fix them when they go wrong.
I dont know how machanically minded you are but I would start to check for loose items etc on the engine and arround the engine bay.I would now be checking tightness of fuel injectors, fuel rail etc making sure theres no leaks. Check all the wiring harneses are correctly fitted and are not damaged. Are the hoses all ok, pay attention to the EGR valve etc
Are the engine earth straps bolted tight, battery terminals tight.
These things and many more will have to be checked as landrover will only look with the fault code reader.
When my car had problems with the steering etc they couldnt find anything wrong so I fould the faults and took it back to them, they were a little embarrised that I seemed to know more than they did lol.

I have had an offer to have a proper diagnostic check which will get done hopefully in the next week or so, the only fault code the MOT garage could find (quite how involved this check was I don't know) was a 'possible' fault with the air flow meter. Somebody else has suggested the lambda sensor could be faulty? This weekend I'm replacing the rear discs and pads as it failed the MOT on these....while doing this I will have a good poke around and check all you suggest.

All checked and double checked SS, seems it may well be the MAF sensor

Well, thanks to oldgeezer the MAF sensor has been properly diagnosed (open circuit fault which could be plug etc but unlikely) as being faulty so I have one ready at LR to collect tomorrow. No other relevant faults stored so quietly optomistic the new MAF sensor will sort things out and rid me of this damn judder/hesitation that has been driving me up the wall!

Pleasure to meet up with you OG..............very much appreciated your time and considerable knowledge

Fingers crossed.
Good to meet up and lets hope problem solved. It was fun telling you the different things that had occurred in your freely's life and how you could associate them.

Hi
Many thanks for message. Its great when help is appreciated. Glad to hear all sorted and running well now.
Good to know that the diagnosis of air temp sensor open circuit in AFM was correct.
Viewing the live data to see the air temp set at default setting of 62 degrees helped confirm the above fault.
With the temp in default setting it was under-fuelling the engine.
may you have many more miles of trouble free motoring.

oldgeezer wrote:

Hi
Many thanks for message. Its great when help is appreciated. Glad to hear all sorted and running well now.
Good to know that the diagnosis of air temp sensor open circuit in AFM was correct.
Viewing the live data to see the air temp set at default setting of 62 degrees helped confirm the above fault.
With the temp in default setting it was under-fuelling the engine.
may you have many more miles of trouble free motoring.

Hi Dunk
Sorry had family do yesterday.

Are you sure the dual mass flywheel is ok ? I don't mind you popping over
Its either tyre or transmission related, dual mass or an injector leaking fuel on the overrun causing some erratic combustion. Wont do any harm to clean the sensor as I know its been problem before.
I should be around Wednesday am till 12 or Friday. need to give me a bell after Monday.
Rgds OG

oldgeezer wrote:

Hi Dunk
Sorry had family do yesterday.

Are you sure the dual mass flywheel is ok ? I don't mind you popping over
Its either tyre or transmission related, dual mass or an injector leaking fuel on the overrun causing some erratic combustion. Wont do any harm to clean the sensor as I know its been problem before.
I should be around Wednesday am till 12 or Friday. need to give me a bell after Monday.
Rgds OG

Without wanting to speak too soon, a LR specialist came out in the car today and diagnosed a possible drive shaft problem and much to my relief once it was up on the ramps back at the garage he confirmed this to be the case. So, fingers crossed, the issue will be (hopefully) sorted tomorrow. It was simply coincidental that the judder/hesitation/vibration/shake whatever were overlapping each other and once one was sorted the other problem worsened.

Shame my B-I-L is so busy with work and me not being able to do without the car for too long as he would of fitted it for me, bless his cotton socks!...as it stands it will cost me £275 inc which is about right from what I can see and certainly cheaper than what my wayward imagination was having me believe should it of been something far worse which I was losing sleep over

OG..........thanks again mate for the previous help and offers of assistance but I had to get something sorted urgently