I seem to be having this strange problem with my manual 07 FR2. The car seems to randomly jolt when accelerating or when driving at a constant speed on the motorway (even with cruise control on). It seems as if the engine suddenly cuts out or the brakes are heavily applied for a split second, then continues to drive fine. Luckily the car doesn't loose much speed in this time but I can't imagine the jolt is good for the car. Has anyone else had anything like this? It's just been serviced and has had all new filters, but this hasn't helped the problem!

Thanks

Sorry to say sounds like it may be a clutch problem.

If you do a search there are quite a few threads about this subject for further info.

The thing that gets mentioned most is the "Dual Mass Flywheel" but I don't know if that is relevant in this case.


I'm sure there will be more answers and suggestions from much more experienced members than me


By the way when searching either put a + in-front of additional words e.g. "clutch +slip" or use google including "freel2.com" in the search box. 2002 Honda VFR800
2002 Toyota Celica 140 Silver (mid life crisis - again!)
2007 FL2 GS Manual Army Reconnaissance Green + freel2.com sticker
2004 Toyota Celica 140 Black - Gone
2000 Toyota Celica 140 Silver - Gone
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jmatthewz wrote:

I seem to be having this strange problem with my manual 07 FR2. The car seems to randomly jolt when accelerating or when driving at a constant speed on the motorway (even with cruise control on). It seems as if the engine suddenly cuts out or the brakes are heavily applied for a split second, then continues to drive fine. Luckily the car doesn't loose much speed in this time but I can't imagine the jolt is good for the car. Has anyone else had anything like this? It's just been serviced and has had all new filters, but this hasn't helped the problem!

Thanks

many thanks for your responses

I'm really hoping that it is not the clutch as my car is over 70k miles and isn't under warranty any more! I've seen the other forums relating to clutch problems, but they all seem to have slipping problems and lag when building up speed. My FL2 drives otherwise fine and the clutch doesn't slip or lag at all when driving, it's just this sudden jolt which I thought might be a sensor fault or something, as if the engine suddenly cuts power for a split second and the engine braking causes the jolt? With the clutch, would there be noticeable jolt? or would the car just lower speed without engine braking as if the clutch was open? I'm not sure on how the FL clutch system works!

If the EGR valve could have some effect on this, then I'll get it cleaned and looked at

Cheers

These Jolts, are there any warning lights or messages displayed when it happens
When it happens is it similar to the engine losing all power then suenly getting full power back i.e. when you lose power you are actualy thrown forwards then thrown back in the seat just as though someone has turned the engine off for a second then turned it back on again

as210358,

there are no warning messages or lights with this problem. The best way of describing it is that the engine stops providing power for a split second, and the engine braking causes the car to jolt, almost like a backfire. The rev counter barely moves during this as it happens so quickly and the car carries on as normal afterwards and the electrics are not interrupted. I will probably need to take it in to LR to look at, but since it's out of warranty and I need my car all week for my job, I wanted to see if any of you guys knew what it could be so that I can get it sorted in as few garage trips as possible!

Thanks for your help so far

Have a read through the thread below, it sounds very much like what I had and was a 2007 manual (not that the gearbox would make any differance) on the end of the crankshaft is a Pulley, behind the pulley is the Reluckter Ring which has a number of magnetic poles on it, this in turn tells the sensor what position the crankshaft is for the timing, it was the the Reluckter Ring that failed on mine. As the magnetic Reluckter Ring spins it generates a pulse for the sensor as the Ring was at fault no pulse was generated and this it seems why no fault was ever registered in the ECU. It seems as the Reluckter Ring was not emitting the signal the engine would think that it had been turned off and shut down then, pick up the signal again. If it is that as I understand it the part is quite cheap but mine was warranty anyway.

When it cut out the rev counter would drop a bit, and you would almost get whiplash and off you would go again.

http://www.freel2.com/forum/topic5041-45.html

I have a similar problem on MY11. It only happens intermittently but it is almost as though everything has cut out for a split second. It then gives a cough and goes on! This usually happens when the engine is properly heated up after a long run and you accelearate away at a roundabout, for instance. there seems to be a relese of pressure noise at the same time. Dealership, on advice of LR, downloaded software of car, sent it to LR by email who then updated it and returned it for re-loading. It has been better since but not cured. Awaiting LR technical guy to come up to dealership to have a go of it.

On another matter the other day I started it and there was a terrible vibrations and rattling noise from engine. Immediately stopped it, gave it a minute and re-started. No problem and no problem since. Any thoughts? I thought the pistons were coming out of the side of the block! Thanks

I have had this engine vibration twice now in 10 months of ownership. The first time many months ago after the DPF software update and the second time a fortnight ago (both times after a hot restart). I was so concerned to stop the engine to prevent damage that I did not check if it would respond to the throttle, no warning lights came on and it took a while to respond to the stop button. This has been reported to the dealer but as nothing is logged in the ECU there is little they can do. I have also noticed a dead spot on slow acceleration usually when cold and not every day.

Thanks for your responses, I feel better knowing that this may be a more know about fault!

That said, it was the worst it's ever been today, had a number of jolts and on one the car lost power for a couple of seconds and the warning "Reduced Engine Performance" came up for the first time. This was on a busy motorway doing 70, rev counter dropped by 300rpm and suddenly lost a bit of speed because of this. Taking it easy with the car now until it's resolved!

I normally use a local land rover specialist mechanic to service my car, but with a problem like this i'm not sure if they'll have the technical know how particularly if it's to do with a drive chain sensor or if it needs a software update etc as they are more used to fixing older LRs. At the same time my local LR dealer wants £180 just to look at my car and this doesn't guarantee they'll diagnose the problem! Might have to take the hit and go to LR....

Sounds similar to mine, when the crankshaft sensor was playing up. Get LR to do a diagnotic - that sorted mine oue  Gone - TD4 XS Auto, Sumatra Black, Mud flaps and side strips, clear indicators, private plate, privacy glass

jmatthewz wrote:

Thanks for your responses, I feel better knowing that this may be a more know about fault!

That said, it was the worst it's ever been today, had a number of jolts and on one the car lost power for a couple of seconds and the warning "Reduced Engine Performance" came up for the first time. This was on a busy motorway doing 70, rev counter dropped by 300rpm and suddenly lost a bit of speed because of this. Taking it easy with the car now until it's resolved!

I normally use a local land rover specialist mechanic to service my car, but with a problem like this i'm not sure if they'll have the technical know how particularly if it's to do with a drive chain sensor or if it needs a software update etc as they are more used to fixing older LRs. At the same time my local LR dealer wants £180 just to look at my car and this doesn't guarantee they'll diagnose the problem! Might have to take the hit and go to LR....

Just had it back from LR and it turned out to be a faulty crankshaft sensor, as someone suggested above. £352 and seems to have solved the problem!

In the last week mine has started showing the same symptoms. Anyone know the part number for the Reluckter Ring/Crankshaft Sensor? Can this be replaced as a DIY?

I believe these are them, note there is a VIN No change but the LR000681 should suit your year as the latter one is also for the Evoque.

LAND ROVER LR000681 1 SENSOR, TIN PLATED, SENSOR - CRANKSHAFT POSITION - CPS, L359 FREELANDER (V)AH999999
LAND ROVER LR021649 1 SENSOR, TIN PLATED, SENSOR - CRANKSHAFT POSITION - CPS, L359 FREELANDER (V)BH000001