Freelander 2 (LR2) Rattle from throttle body gears area

Hi all,

Seen loads of whining noise issues in the throttle body when engine is switched off, but mine is different to this. When i put the key in but don’t start the car, the rattle starts behind the plate where the plastic gears sit. Also continues for a few minutes after key removal.

To me it sounds like shot bearings, is there anything in there that runs on bearings or something else that could be causing this issue? Just working out whether it’s a repair or if I have to fork out for a new throttle unit. Car is a 2008 Freelander 2 2.2 diesel with around 70,000 miles.

Many thanks for taking the time to read this post.

Regards

Peter

I'd just replace the TB. If it's rattling, the gears are shot.
Get an OE part, which doesn't come in the expensive LR box. Don't forget that it'll need an air path calibration after the new TB is fitted, or it'll fail again soon.
Mine is on its 3rd TB at 132k miles.

Nodge68 said:

I'd just replace the TB. If it's rattling, the gears are shot.
Get an OE part, which doesn't come in the expensive LR box. Don't forget that it'll need an air path calibration after the new TB is fitted, or it'll fail again soon.
Mine is on its 3rd TB at 132k miles.

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Thanks for that, seems the logical way to go. Something like this?


Regards,

Peter

peterdallan33 said:

Thanks for that, seems the logical way to go. Something like this?

Throttle Body for Land Rover Freelander 2 2.2 Diesel

Throttle Valve Assembly (Aftermarket) for Land Rover Freelander 2 Diesel 2.2L This is a motorised throttle valve body for the Land Rover Freelander 2 Diesel. This is a motorised "butterfly" valve that is driven by a motor that drives some gears to close and open the "flap". The problem is that...

www.powerfuluk.com

Regards,

Peter

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No, that's an aftermarket part.

Get an OE from Advanced Factors.

Nodge68 said:

No, that's an aftermarket part.

Get an OE from Advanced Factors.

Dw12 Throttle Housing

Land Rover Freelander 2 LR2 Dw12 Throttle

www.advancedfactors.co.uk

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Perfect, thanks for the advice.

Regards

Peter

@Nodge68 What's an air path calibration? I didn't do anything other than a test drive after I fitted a new throttle body. Not experienced any throttle fault codes or problems since.

Rank Amatuer said:

@Nodge68 What's an air path calibration? I didn't do anything other than a test drive after I fitted a new throttle body. Not experienced any throttle fault codes or problems since.

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The air path calibration process is very involved, although very easy with the correct equipment. Basically the ECM doesn't have the ability to self-calibrate, so it needs all the components on the air intake path to be calibrated via diag software. From memory the calibration sets the flow parameters for the MAF, MAP, IAT, EGR valve stop positions, TB stop positions, and turbo vane actuator position.
If the calibrated isn't completed, then the engine can't run optimally, and can cause early failure of the TB, EGR or turbo actuators, as the ECM doesn't know when to stop driving the motors against the stops.
It takes about 30 minutes to carry out an air path calibration using JLR SDD.

That does not sound like a DIY job for anyone, like me, without the JLR SDD kit.

As for running optimally, I've noticed no change in performance, fuel consumption, rattles, wheezes or whines since changing the throttle body. Guess I'll live with it.

Rank Amatuer said:

That does not sound like a DIY job for anyone, like me, without the JLR SDD kit.

As for running optimally, I've noticed no change in performance, fuel consumption, rattles, wheezes or whines since changing the throttle body. Guess I'll live with it.

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It needs diagnostic equipment with the capability to carry out the calibration, JLR SDD does obviously, but I think the Foxwell and others do it too. You may be lucky and have no issues with it, but that's far from the norm. From what I've seen, failure to carry out the calibration often results in early TB gear wear.
My own FL2 has had 3 replacement TBs, the first was installed by LR @ 90k, the second was installed by a general garage, I replaced this at 120k, as the gears had stripped in 30k miles. When I fitted my replacement, I carried out the calibration, and there was a noticeable improvement in engine response, and the MPG claimed a couple of MPG too.