Thread: D3 TDV6 poor fuel economy

Will check top hose and check the maf/map. Definitely confirmed that it's actual, not just off the readout as I filled to same spot and calculated that way.

Thanks for the ideas!

I cleaned my MAF sesnor today (BEFORE picture attached ) and already that has cut black smoke by about 75% and I have noticed an increase in responsiveness during acceleration.

However the one second delay off idle still exists.

Hopefully fuel economy improves now too.

My wife drives ours and consistantly 10-11 city diving with road tyres and no roof rack.

Put on MT tyres and roof rack and its 13 add camper and its 13.5 to 14.

I clean the Senser in the Y piece on top of the engine every fortnight, and remove the Y piece and clean it every service.

Check the 2 main hoses that go to the I/Cooler 1 on either side of the radiator at the bottom. I believe the drivers side one does split .

Cheers Ean

It has new silicone intercooler hoses and new other hoses from the timing belt change a few months ago.

Once I get some more time I'll put the blanking bits in too.

10 degrees here at home this morning too.

Just to ensure picky Dale, that's the MAP sensor, not MAF sensor.

The MAF sensor sits just to the right of the air box as you look at it.

Originally Posted by sheerluck

Just to ensure picky Dale, that's the MAP sensor, not MAF sensor.

The MAF sensor sits just to the right of the air box as you look at it.

Thanks Dave - more than happy to be correctly informed. However the improvements already experienced mean that it was certainly worth doing anyway.

I had looked through the workshop manual and it did not bring up an MAF sensor for the TDV6

Will have a crack at the MAF sensor tomorrow evening. About to head to the Mindil Beach markets

I'm just back from a 5773k trip in 13 days - so we averaged 444k a day!

Anyway I cleaned both the MAF & MAP sensors and changed all my oils before the trip, my EGR valves are blanked and I averaged 13.17lts/100k with a roof rack( with wood!) and my oversize mud tyres.

This figure has been calculated back down to standard tyre kms and the lowest I had was 12.2 and the highest 13.9 so I'm reasonably happy with those figures.

BTW the first tank was the lowest figure and it also had 2 stroke added which none of the other fills had, maybe something in that.

When was it last serviced?

May be an idea to give it a full service with all new filters and oils, I always find the fuel filter gets missed a lot. LR say every 75,000 miles but I change mine earlier than that.

Also, for egr valves.
If your car is an 04-07 it can be blanked easily. Plenty of kits and guides to show how to do it.
If it's a 07-09 then you need to fit emulators as well as the physical blanks as the egrs are tied into the engine management system and simply removing the egrs throws up an engine warning light.
The emulators fool the car into thinking the egrs are still present and doesn't throw up a warning light.

If it's an auto, it may need the gearbox oil and filter changed.
ZF say every 50-75,000 miles between changes for them.

Very few people do that of course.