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Tommybuk



Member Since: 17 Jan 2024
Location: Ellon
Posts: 11

Scotland 2016 Range Rover Autobiography SDV8 Barolo Black
Restricted performance with cruise control on.

2016 4.4 FFRR

Anyone had this?.......

'Restricted performance' when accelerating up a hill over 50mph with the cruise control on. It never does it with cruise off.

If I stop and start it again, its fine. It throws a code for the MAF, absolute pressure sensors

Its only done it about 3 times in 6 months....... No other symptoms.

Cheers! Thumbs Up

Post #697463 5th Aug 2024 10:06pm
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ChrisJC



Member Since: 14 Sep 2023
Location: Northants
Posts: 106

United Kingdom 2014 Range Rover Vogue SDV8 Aintree Green

Change the MAP sensor - it's very easy to do!

Chris. L405 - 4.4SDV8 Vogue
P38 - 4.6V8 HSE
Land Rover series IIA V8

Post #697518 6th Aug 2024 7:58pm
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Tommybuk



Member Since: 17 Jan 2024
Location: Ellon
Posts: 11

Scotland 2016 Range Rover Autobiography SDV8 Barolo Black

Yeah, I've had that out to clean it. It was full of gunge!
Any idea why it only does it with cruise control on? Confused

Post #697519 6th Aug 2024 8:06pm
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Dolphinboy



Member Since: 07 Dec 2009
Location: Bristol
Posts: 3127

United Kingdom 2011 Range Rover Vogue TDV8 Atacama Sand

my 4.4 TDV8 (l322) had this - it is to do with the sudden demand for fuel and air to maintain the speed uphill. on mine it was a cracked inlet manifold which led to RP.

Post #697527 6th Aug 2024 9:58pm
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Tommybuk



Member Since: 17 Jan 2024
Location: Ellon
Posts: 11

Scotland 2016 Range Rover Autobiography SDV8 Barolo Black

Ok, thanks for the reply. I'd heard the later 4.4's didn't suffer with the cracked manifolds, but who knows.
Hopefully if the fault gets more regular, the problem may be more obvious.

Post #697528 6th Aug 2024 10:05pm
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Dolphinboy



Member Since: 07 Dec 2009
Location: Bristol
Posts: 3127

United Kingdom 2011 Range Rover Vogue TDV8 Atacama Sand

you're right they did change the spec for the later models. mine is a 2011. I think the 2012 on got the upgraded manifolds. Certainly the L405's did.

My prob was ongoing for. few months - always at the same part of the M4 as it went uphill and CC was on. small crack spotted in the Pax side inlet manifold. £1600 to replace as the all the injectors need to come out and be replaced as part of the job.

Post #697578 7th Aug 2024 7:33pm
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