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dhallworth



Member Since: 10 Oct 2011
Location: Glasgow
Posts: 2042

United Kingdom 2012 Range Rover Autobiography TDV8 Baltic Blue

I got a 2012 module for my SC in January. It does make a big difference. I tend to use my phone a lot when I’m in the car on my own so it was something I wanted fixing.

The new module is easy to fit and is much clearer then the old modules were. It shows contacts and signal strength which the old one didn’t. My module hadn’t been updated by Wiggs so I needed to repair my phone every time I got in the car and that was just a hassle.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Post #597014 10th Jun 2021 12:45am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

The right solution as you say is to replace with a more modern module, so that may come at a later date, for now I cant justify the cost when I still have a list of more important jobs.

My module gives me a contact list that allows me to call, the called phone rings and answers but there is no sound. Callers can call my phone and again my phone will answer (and mute radio/cd etc) but still no sound.

Pleased to see that your car is going well with your latest update, need to get mine there as soon as I can. Next priority jobs Vacuum leak and nearside wheel arch rust. I will be starting to strip the intake system tomorrow, this time probably all the way to the injectors.

David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #597016 10th Jun 2021 12:57am
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dhallworth



Member Since: 10 Oct 2011
Location: Glasgow
Posts: 2042

United Kingdom 2012 Range Rover Autobiography TDV8 Baltic Blue

Out of interest, what makes you think you have a vacuum leak?

My car idles a little lumpy when stone cold but it clears shortly afterwards. I thought it was a vacuum leak as I could hear air wooshing around the PCV valve even after replacing the PCV and the plastic hose from it. I bought a smoke machine and tested it myself and couldn’t see anything so I took it to the local specialist who did a high pressure smoke test on it for me and they found nothing.

Apparently vacuum leaks on the 4.2’s are a fairly rare occurrence from what they said.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Post #597017 10th Jun 2021 1:22am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

Thanks David, interesting

After my car failed its MOT for emissions the pre cat sensor was replaced by the warranty company. Shortly after the car popped up a P0171 error. So I had my local garage do a smoke test, "there was so much smoke coming from the brake vacuum take off" that they couldn't get enough pressure to continue. So £70 lighter I decided to do my own smoke test.
That gave no issues, both with throttle open and closed.
I checked the fuel trims and found that bank 1 was all over the place whilst bank 2 was very stable.

I now have an error code P0420 which is related to the cat on bank 1, this could be a sensor fault but as far as I can tell it could be a failing cat due to lean running.

So I am fairly sure that the issue is not within the shared intake system, but to be certain I will test all the way through.
My gut feeling is that it could be a failed O ring on one of the injectors.

That's where I stand at the moment but am open to all suggestions. Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #597019 10th Jun 2021 2:29am
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Mikebob



Member Since: 10 Jun 2019
Location: Pretoria
Posts: 9

South Africa 2007 Range Rover Supercharged 4.2 SC V8 Java Black

Hi, i have an 07 4.2SC. It was fairly poorly cared for before i got it. I have been chasing a misfire on cylinder 8 since i got it. Changed all the usual stuff but still it persisted. Kept getting the misfire code and both cat efficiency codes. Obviously the engine light was a daily occurence. Like you my cat 2 sensor readings were jumping all over the place.

Yesterday i got my iid licensed on the vehicle. I reset the engine adaptions and since then i haven't seen the engine light. The engine seems to be running smoother too.

Worth a try seeing as you have the tool

Post #597020 10th Jun 2021 6:10am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

David, thanks your comments made me think, if leaks are uncommon/unknown then why have I got an issue? / have I got an issue?

Mikebob thanks, but my initial thought was I have already done that, so that's not the problem, however after looking at my records that was done before the pre cat o2 sensor was changed.

So reset the engine adaptations, cleared all faults and now after several days driving the P0171 code has not recurred.

But the P0420 code has come back. Next job is to replace the post cat sensor and repeat the road test. I really hope that cures the issue so that I dont have to change the cat.

Thanks both, now fingers crossed! Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #598337 22nd Jun 2021 2:14am
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Mikebob



Member Since: 10 Jun 2019
Location: Pretoria
Posts: 9

South Africa 2007 Range Rover Supercharged 4.2 SC V8 Java Black

Have you checked what your fuel pressure is?

Post #598343 22nd Jun 2021 6:05am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

Yep checked fuel pressure, but that was a while ago so I will check again, thanks Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #598354 22nd Jun 2021 11:05am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

Yes I know, its taken me a while, but been a bit busy.

My iidtool tells me the fuel pressure is 300kpa. The manual says 335kpa so is my 300kpa within spec?
I will be putting a proper gauge on the fuel rail, once a friend of mine loans me the kit. So how reliable is the fuel pressure sensor?


David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #599206 30th Jun 2021 1:30am
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Mikebob



Member Since: 10 Jun 2019
Location: Pretoria
Posts: 9

South Africa 2007 Range Rover Supercharged 4.2 SC V8 Java Black

I have the spec at idle as 450kpa, so its very low

Post #599224 30th Jun 2021 9:05am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

From the manual, I found the following





However further down in the manual, where it talks about the injectors

"The fuel rail pressure is regulated to 4.5 bar by a fuel pressure regulator which is integral to the fuel pump module, within the fuel tank."

Why they mix kpa and bar I dont know however 4.5 bar is about 450 kpa so that has to be the max running pressure.

I must get a gauge on it soon.

David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #599305 1st Jul 2021 1:21am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

I managed to do the Supercharger oil change that I promised the car since I bought it.
I know a few people on here have mentioned that the photos are missing from the post in the wiki, I hope these help....

First an under bonnet shot, all SC owners will recognise this and yes the engine cover is missing.



After removing the Induction resonator the drain/fill plug is easily visible, here the Allen key is already inserted to help make it obvious. My fingers are holding a part of the wiring harness out of the way.



I found that the hex key flexed too much (movement was restricted the throttle body intake) to loosen the plug, so I used the old ring spanner trick to provide the required force, by sliding the ring spanner down to the 90 degree bend of the Allen key I managed to get enough movement to release the plug. (it was tightened way too much by the previous gorilla. As it has an O ring it only needs to be nipped up) Once the plug was released it would have been useful to have an Allen driver available to spin the plug out, but I used a Torx driver as it was quicker than using the ball end of the Allen key.

Once the plug was removed it was an easy job to suck out the oil, I managed to remove 150ml, here is a shot showing the refilling, just for reference



Here is a shot to show the difference between old and new. The only worrying thing is that this is after only 15k miles so I intend to do this again at the next engine oil service in about 5k miles.




Getting the plug back into place was very difficult, I asked my wife to give it a go as she has small hands, but that didn't work and as my hands were too big to get access, I removed the bolt holding the front of the Throttle Body Intake down and as it has a rubber collar at the Throttle body end I was able to lift it enough to get my hand in to insert the plug. Otherwise I would have removed the Throttle Body Intake, an easy job but you need to remove the Plenum Chamber to do so.

So an easy job made difficult by access issues Personally I would change every 20k not 50k as others including the oil suppliers recommendation of 50k, the cost compared to a rebuild/replacement of the supercharger makes it a no brainer!

David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #601739 25th Jul 2021 4:09am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

Finally gave in and replaced the Bluetooth module, couldn't resist when I found one on eBay for £50

At the normal price they fetch I could not justify replacement, its rare I use my phone in the car, but it was something that didn't work and that annoyed me. The next not needed repair is the TV tuner, which again I got cheap (£32) from eBay.

David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #611869 7th Nov 2021 2:47am
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conor



Member Since: 27 Aug 2021
Location: London / Ireland
Posts: 132

United Kingdom 2005 Range Rover Supercharged 4.2 SC V8 Zambezi Silver

This is a great thread and I will be referring back to it to read in greater detail in Future.

May I ask what you used to make up the plan of job in one of your earlier posts? Is that a software program or just a nicely formatted Excel spreadsheet?

Thanks

Post #611999 8th Nov 2021 11:27am
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bigbo



Member Since: 07 Jul 2014
Location: Derbyshire
Posts: 435

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

I use Microsoft OneNote to keep a history of servicing, parts and specific jobs that I have done or need to do. I also add links to my calendar and Microsoft ToDo which sync to my mobile and other devices. Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Post #612019 8th Nov 2021 2:14pm
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