Restricted Performance - 2010 3.0 Diesel - MAF Maybe!!! HELP

lanesun · 14th June 2020, 10:10 PM

Originally Posted by Damo4runner

Ok so I ordered two new MAF sensors from LRDirect and they arrived, ordered them Wednesday night they were on my door Monday morning, pretty good considering it came from the UK and I'm in Tasmania.

So I have fitted the sensors and have driven it for about 100-150klms and no more Restricted performance codes so it would seem that I am now trouble free. Time will tell but thanks for all the help.

Damo

I got "Restricted Performance" + "Transmission Fault" error message recently. After diagnose by Land Rover dealer, they did a transmission module software update first, but it didn't fix the problem.

Then they said it is a fault related to fuel pressure system and fitted a new fuel filter. However after few weeks of driving the same error message come up again.

I am feeling desperate now, really hope this problem can be fixed or I will sell the car. I was just wondering after replaced two MAF sensors, did it fixed the problem permanently? and which brand of sensor did you purchased, VDO or Land Rover one?

Thanks

**BradC** · 14th June 2020, 11:36 PM

Originally Posted by lanesun

I am feeling desperate now, really hope this problem can be fixed or I will sell the car

Don't load the parts canon. Get the codes read. There are literally a plethora of things that can cause "restricted performance" events, and going out on a limb with nothing bur a cursory search is just going to cost you time and money.

Number 5 : Malfunction. Need input.

**scarry** · 15th June 2020, 05:56 AM

Originally Posted by lanesun

I got "Restricted Performance" + "Transmission Fault" error message recently. After diagnose by Land Rover dealer, they did a transmission module software update first, but it didn't fix the problem.

Then they said it is a fault related to fuel pressure system and fitted a new fuel filter. However after few weeks of driving the same error message come up again.

I am feeling desperate now, really hope this problem can be fixed or I will sell the car. I was just wondering after replaced two MAF sensors, did it fixed the problem permanently? and which brand of sensor did you purchased, VDO or Land Rover one?

Thanks

Forget the dealer,take the vehicle to a good LR Indie.

They will read the codes and know where the issue is.

There is no other way to sort it.

Guesswork doesn't get you far with these vehicles,apart from wasting time and $$.

**DazzaTD5** · 15th June 2020, 09:47 AM

As already mentioned the 2 MAF sensors are the same and interchangeable.
You generally wont need to get a smoke test done, a cracked inlet manifold is very obvious, there will be some to a lot of black goo starting to cover all the injectors.

**DazzaTD5** · 15th June 2020, 09:49 AM

Originally Posted by Graeme

The secondary turbo inlet isolation valve is operated by a vacuum chamber whose vacuum is controlled by a servo on top of the motor. Early versions of the valve could become sticky from dirt build-up between the external lever and the housing. The stickiness can trigger reduced performance but fault codes including manifold pressure and turbo operation are normally included so that's unlikely to be the cause of your engine's current faults.

As Graeme has mentioned above, another sign is the air filter will start to get oil contamination from the secondary turbo inlet.

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