SkyeGuy wrote:

So - my 2008 throttle pedal has not cured my car's hesitation/jerk issue, and I suspect the difference in the way the torque or turbo boost is delivered is just down to me now having an earlier-spec pedal on my car.

dorsetfreelander wrote:

Has anyone with the problem approached LR customer services on the forum to see if they can help with a sale or return deal ? Or perhaps Dan at Duckworth ?

Hi folks just done 1000 mls trip fishing in ireland since changing throttle pedal, no hessitation brand new pedal fitted before trip thanks forum for helping me sort out problem

Anyone else tried this on a 2011? My problem is like in this video

I have this issue - as in the video above - at low speed/pulling away after a few seconds halted e.g. junction, roundabout etc.

....and of course it only occurs when the ambient temp gets above 15C...which is insane.

Local-ish LR specialists tracked it as far as identifying what is happening when that noise is made. They put a pressure sensor in the air intake on the join between the airbox and the duct to the turbo. Whenever that noise appears they found a back pressure spike in the duct from the turbo out through the air filter and into the outside world.

My guess is that you are hearing that noise from the left hand side footwell area when driving?

What they then did was to disconnect the MAP sensor on top of the throttle body and it stopped happening.

Since the sensor was not reporting errors they decided the throttle body was at fault and replaced it. This was a hot sunny afternoon in September and I then drove home in stop start traffic - normally a nightmare - and all good. Next day it was back!

Currently temp is of course a bit lower and it's like a different car, smooth, responsive, no "pcha pcha" noise - all good.

So, to my simple mind this has got to be related to something that is aware of the outside temperature - and pretty accurately too.

It reminds me of an issue with my KIA Sportage where they fitted rear roll bar bushes for hot climate to a number of cars. In cold weather they groaned over bumps - in hot they were fine - changeover around 15C........weird! However, not relevant to this problem.

So far as I can find out there are 3 things that could be easily relevant - MAP, MAF and ITA Temp sensors. All are easy to swap. Back in the good old days you use to have a moveable duct on air filter pipes that you used to swivel over to the exhaust manifold area to ensure you got warm air through the carburettor - used to play merry hell in the summer if you forgot to move it back.

I don't know if mass swapping of those bits will make any difference - but I'm going to give it a whirl because there doesn't seem to be any other solution anywhere. Probably won't know the result till next year!

If it's any help - this is my throttle pedal so idon't think it is involved?

cbfks wrote:

Anyone else tried this on a 2011? My problem is like in this video

Quote:

I have tried all these things for the last eight frustrating years without successfully remedying the problem. If LR and independents can’t resolve this problem that countless owners with a 11year model onwards seems to suffer from, there doesn’t seem a lot of hope.

Hi Bin , read my other posts on this complex multi symptom problem . My problem started the instant it had its first full service. Putting two and together I decided it must be the MAF that had been damaged whilst changing the air filter, it didn’t made the stop start work for a day, it hadn’t worked from new, but I was fobbed off with the dealers old chestnut of there are multiple requirements on the system for it to work. A new battery this May has made the stop/start work faultlessly ever since. Also the hesitation went away for about a week. This is what made me say, I don’t think there’s a solution.

bin wrote:

Quote:

I have tried all these things for the last eight frustrating years without successfully remedying the problem. If LR and independents can’t resolve this problem that countless owners with a 11year model onwards seems to suffer from, there doesn’t seem a lot of hope.

Interesting that yours is a manual - I was wondering if there was some part of the automatic system that may be responsible.

So, I'm guessing that the 3 sensors I mentioned have been replaced with no benefit?

bin wrote:

I have this issue - as in the video above - at low speed/pulling away after a few seconds halted e.g. junction, roundabout etc.

....and of course it only occurs when the ambient temp gets above 15C...which is insane.

If it's any help - this is my throttle pedal so idon't think it is involved?

Hi guys,

I've got a 2011 SD4 SE.

Same issue, intermittent loss of power when exiting low speed corners. Pulling into an intersection and it just decides to pause for a moment....then take off. It's a real pain.

I purchased the new pedal as suggested on here and it seemed to work for a short while but the issue persists.

Other forums have suggested the crank angle sensor, has anyone on here looked at this?

Cheers

logged for later reference, not a FL2 but a R40 which i know as a different engine as well, it was intermittent misfiring, and sometimes go into limp mode, that turned out to be the pedal, so its not only FL2 which may be the same fault?

So yes reference for later only.

CED wrote:

cbfks wrote:

Anyone else tried this on a 2011? My problem is like in this video

I have tried all these things for the last eight frustrating years without successfully remedying the problem. If LR and independents can’t resolve this problem that countless owners with a 11year model onwards seems to suffer from, there doesn’t seem a lot of hope.

bin wrote:

I have this issue - as in the video above - at low speed/pulling away after a few seconds halted e.g. junction, roundabout etc.

....and of course it only occurs when the ambient temp gets above 15C...which is insane.

Local-ish LR specialists tracked it as far as identifying what is happening when that noise is made. They put a pressure sensor in the air intake on the join between the airbox and the duct to the turbo. Whenever that noise appears they found a back pressure spike in the duct from the turbo out through the air filter and into the outside world.

My guess is that you are hearing that noise from the left hand side footwell area when driving?

What they then did was to disconnect the MAP sensor on top of the throttle body and it stopped happening.

Since the sensor was not reporting errors they decided the throttle body was at fault and replaced it. This was a hot sunny afternoon in September and I then drove home in stop start traffic - normally a nightmare - and all good. Next day it was back!


Currently temp is of course a bit lower and it's like a different car, smooth, responsive, no "pcha pcha" noise - all good.

So, to my simple mind this has got to be related to something that is aware of the outside temperature - and pretty accurately too.

It reminds me of an issue with my KIA Sportage where they fitted rear roll bar bushes for hot climate to a number of cars. In cold weather they groaned over bumps - in hot they were fine - changeover around 15C........weird! However, not relevant to this problem.

So far as I can find out there are 3 things that could be easily relevant - MAP, MAF and ITA Temp sensors. All are easy to swap. Back in the good old days you use to have a moveable duct on air filter pipes that you used to swivel over to the exhaust manifold area to ensure you got warm air through the carburettor - used to play merry hell in the summer if you forgot to move it back.

I don't know if mass swapping of those bits will make any difference - but I'm going to give it a whirl because there doesn't seem to be any other solution anywhere. Probably won't know the result till next year!

If it's any help - this is my throttle pedal so idon't think it is involved?

Unfortunately there is no known cure, speaking from eight years of trying and getting so called experts involved . Dealers haven’t a clue .