poor fuel economy td4 auto

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traffic0703

Member
Posts
50
Hi,

My TD4 auto (2004) is returning about 18 mpg on town driving.

I know it is extremely cold etc but the hand book quotes 25mpg.

Is there something wrong?

I may have a thermostat problem causing the engine to run at a lower temp than normal. Maybe this is effecting fuel?

Any comments please.

Thanks


Rob
 
Mines returning a pretty naff mpg - guess it's the cold whether and me trying to do 4x4 wheelspins - with some success!!! :D
 
Skynet said:
I hope the front wheels slip first ;)
Click to expand...

I think they do, but as I'm in the Hippo - a bit hard to see - have tried adjusting the mirrors, but to no avail....

It does feel that front first then the rear kicks in........'he hopes...'
 
My MPG is down a bit in this weather. I put it down to running the heaters etc on full whack, and the fact that the engine seems to take longer to warm up so using more revs on the autobox.

Run some millers through on a double dose for a tank or so and see if it picks up, I like many on the forum swear by the stuff (****, another £12 :)), but in all honesty it does clean up your injectors and the fuel system altogether seems a little more efficient.

Also check your tyre pressures as you may have lost a few PSI in the cold as the air becomes less dense.

Like others said, check for resistance anywhere in the drivetrain & breaking system, this should present itself as having to give the TD4 the beans just to get around normal driving, does it feel like its pulling a weight or resisting?
 
I think the cold weather in general ruins the MPG. Big block to heat up, and lots of ancillaries running. You will probably find it picks up again when the weather gets a bit warmer. I find that whenever I need to use glow plugs (when the dash light comes on) the MPG is due a hit. Then when it warms up back to normal. Also tyres are all over the place at this time of year. If I'm in Cornwall I bring them up to 30psi, if I'm in Scotland I leave them down a few psi to maintain grip in the snow.
 
Many thanks for the suggestions - going to get the thermostat looked at first to see if this improves things as something is definately wrong there. I think this plus the weather is probably the main reasons.
 
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