TD5 Fuel Economy

[rdavies]

Hi, I have a 2000 TD5 Auto approx 131,000 km and notice the fuel economy has declined quite significantly in the past 6 months. I was doing around 11L/100km and now about 16L/100km - this is normal around town driving. On the highway I am still getting close to 11L/100km, maybe slightly more. My best every mileage was a trip to Sydney in Aug last year where I did 908km on one tank - almost empty though.

I am not sure if engine power has reduced - it still runs well, a bit sluggish until it warms up, I have noticed it struggle slightly more towing, but any change in power is gradual. The only mod I have is an ARB roof rack (Nov 05), so I do expect a small change, at worst 1 - 2 L/100km. My last service was a major one at about 124,000 and the air filter was replaced and I always change the oil every 10,000.

Does anyone have similar experiences with economy? Or advice on some checks I could do?

Regards

Richard

[johnv]

Do your self a favour if you have not tried this one allready

I had a similar kind of symptom plus a vibration @ 2200 -2400 rpm that was getting worse.

Cure/fix

Get a 2 bottles of good injector cleaner. ( Get a new fuel filter in as well if its been a while )

Put the whole lot of injectore cleaner in one full tank of fuel to give it a shock treatment.

Put the other one in over the next several tanks

The imporvement in mine was noticble in fuel economy, noise, vibration, smoke etc.

[adm333]

I think I know what the problem is........


Stop doing this ......




:wink: :wink: :wink:

Dave

[tracker]

908 on one tank!!!!.I'm lucky to get 650.

[noddy]

When was the fuel filter last changed? You might have got a bad batch of fuel which has clogged the filter. It is expensive, but it might be worthwhile changing both your air and fuel filters to see whether this fixes the problem.

I also use a fuel conditioner/addiditive in every second tank which gives me better fuel economy but also addresses any problems with water or biological growths in the fuel.

Hope this helps.

[tracker]

Noddy,new filter just fitted last service,no change,injectors cleaned same time.Prob just right foot. Going on a run next week with caravan so will check.Not that worried,last lr was 200tdi disco used about same,one b4 was v8stage one but we wont go there :roll:

[DEFENDERZOOK]

Originally posted by Noddy
When was the fuel filter last changed? You might have got a bad batch of fuel which has clogged the filter. It is expensive, but it might be worthwhile changing both your air and fuel filters to see whether this fixes the problem.

I also use a fuel conditioner/addiditive in every second tank which gives me better fuel economy but also addresses any problems with water or biological growths in the fuel.

Hope this helps.

<span style="color:blue">
hey noddy....
what fuel conditioner are you using.....?</span>

[rdavies]

Thanks fellas, I will try a few of the suggestion and get back to you with some results.

And ADM333 (aka Dave), a great shot of my baby....its been a while since I have go her real dirty.

[rdavies]

and thanks for the recovery



lets drain out the water

[duff]

I have suffered really bad fuel economy as you are now. It started to be a problem only when towing my van, then it started happening on hot days and no van, eventually it was all the time. even though LR argued fiercely that there was no problems (I was trying to explain to the morons that the gearbox was slipping its clutches all the time and would rarely lock up the convertor).
The gearbox has been replaced recently (under warranty) and lo and behold my car is getting around the 11km per hundred again. Just about everywhere doing everything.
I am rapped its fixed for now, embarressed for LR that there dealers are Morons, and a little ****ed that for nearly two years (50000 kms) I have been using an extra 5lt (about $5.50) every 100 kms.
If only ZF would make there gearboxe's stronger so they wouldnt fail, or at least weaker so they would fail completey ,,,,not over a two year period TIC

Maybe taking note of what your box and all the ECU's are doing. At first my symptoms where very subtle but the economy was gone. It was doing things like not engaging gears first thing(first selection out of park) in the morning for a few seconds more than normal. it would not chage into top gear for km after km. again these all started subtle, subtle enough for me to at first think I was just getting over driving such a nice FWD(the novelty) and had just started to notice things that were not perfect. but alas it was the first symptoms of a terminal condition for the box.