D3 4.0 V6 Petrol - EGR valve \ MAP Sensor

[djhampson]

I have a 4L V6 Petrol D3 with 215k and I've had problems with increased fuel usage. I also suspect it is running rich (smells rich)

Has anyone had to replace the EGR \ MAP sensor (it seems to combined in the EGR valve)?

Does anyone have the part number?

Any tips for confirming that the car is running rich? I have a BT ODB sensor but no idea what to look for.

[Disco-tastic]

I didnt think the petrol had an egr system?

Cheers

Dan

[djhampson]

It has one. I took it off today to take a look.

[justinc]

Hi mate any check engine lamps on? The ford system uses a barometric reading internal to the engine ecu and compares it to the manifold depression to get a value. If it is faulty it will set a check lamp. There is only a small margin from ok to not ok so i doubt it is your issue if there is no lamp on.

Jc

[Graeme]

More likely to be caused by an oxygen sensor (or both) giving incorrect readings. An exhaust gas analyser would confirm this but perhaps just replace both sensors as they deteriorate with usage.

[Disco-tastic]

What sort of fuel economy are you getting dj?

quuck question does the petrol get the same benefits from blocking egr's as the diesel? Is it even possible?

Cheers

Dan

[djhampson]

I haven't had the check light on. There were some EGR errors logged last time I had it serviced but they were only 1 or 2 so SBL cleared them to see if they come back next time.

My Fuel Economy has been on the way up for 2 years or so. I remember getting 14l/100km but now its more like 19l/100km.

I drove down to the Cold Coast and back to Brissie last night and got 15.5l/100km which is an improvement on my normal city driving but still seems very high.

I doubt the EGR can be blocked off as the MAP sensor is integrated into the EGR valve.

[Disco-tastic]

Thanks dj. Im getting 17-20 in mixed driving. Not happy with it so keen to hear if you find an improvement.

Cheers

Dan

[djhampson]

So its been a year or so and my fuel economy is still terrible but now I have occasional hard starting, stalling at lights and rough running. When it refuses to start a reasonable amount of throttle is required to get it to start. Stalling at lights can also be avoided by adding throttle.

I also get regular Check Engine lights and errors logged:


P0108-00(AA) Manifold absolute pressure/barometric sensor high input
P0406-00(AA) Exhaust gas recirculation sensor A circuit high


So I think its time to replace the MAP\EGR unit - does anyone have the part number? I'm struggling to find it.

[djhampson]

Nevermind, some more google searching turned up - LR012028


LR012028 | Valve - Exhaust Gas Recirculat - Land Rover Part LR012028 (https://www.lrdirect.com/LR012028-Valve-Exhaust-Gas-Recirculat/)

[SYDL3]

Hi DJ. - curious whether you have been able to fix this?

I am in very similar situation:
- 2006 LR3 V6 SE with CEL burning,
- poor fuel economy (18-20l/ 100km),
- only start in N with foot on acceleration pedal (with strong petrol smell), and
- same error codes (P108, P46).

Interested to understand the location of the MAP\EGR unit (I just don't see it, but not that technical) and how difficult/ time consuming it was to replace.
Did you go for the OEM part? or are there good after-market alternatives?

Thanks. - SYDL3

[djhampson]

I replaced the MAP\EGR valve recently and got rid of all symptoms.

The MAP\EGR is on top of the engine at the front under the plastic cover. On your ride side if you are standing at the front facing the engine.

122521

[Eevo]

i would replace the map sensor before the egr.

[djhampson]

i would replace the map sensor before the egr.

They are one unit in this engine.

[Eevo]

They are one unit in this engine.


doh.
my bad.

[SYDL3]

I'd like to thank everybody (in part. DJHampson) for their help.

I ended up buying a new EGR valve (with integrated MAP sensor). I wrote down the part-number (5h2e-9y456-ca; FoMoCo) and googled where I could get it.
I found one being offered on eBay by a company from Germany for ~40 EUR. Add the costs to send it over to Oz and it totaled just over ~50 EUR (~75 AUD).
Not sure whether I am allowed to, but here are the details of the company I bought it from (might come in handy for other LR3 owners that are confronted with the same problems):

- pwshop24
- peter (at sign) rhkonline.de
- +49 6742-843035

Also, find attached the picture of the EGR valve installed in my LR3. Took about 20 min to put it in. I just cleared the error codes and drove it around for 15 min. ride. No issues so far. Fingers crossed...

Regards. – SYDLR3

122895

[petroldisco]

Hi, I also had a faulty MAP and had to replace, was wondering how long it took until fuel economy came back to normal. As I bought the car with the issue I cant compare before and after, seem to get around 400km before fuel light comes on, is this normal for the car?

[SYDL3]

Hi PetrolDisco. - Honestly I am not sure. We hardly use the car (only shopping and day-care dropp-offs).
So no 'high-way' kilometers. I get ~21-22l / 100 km. Think that's about normal for how we use it.

[djhampson]

I get 17-19 driving in the city each day. Out on the highway that comes down as low as 13-14.