please help diagnose 130 tdi low mpg in berkshire

[lee99]

:1zhelp: Hi guys , could somebody help me diagnose my low mpg problems. Ive changed the temp sensor, brake position switch. car is fully serviced. thanks in advance.

[Issac Hunt]

Telling us what car you have might help a little bit?

How low is low MPG? Have you looked at the MAF sensor?

[paul b]

Telling us what car you have might help a little bit?

How low is low MPG? Have you looked at the MAF sensor?
And if so don't ever fit a Bosch one, you must go genuine. The others simply don't work.

[lee99]

Hi Issac thanks or getting back to me. The car is a bora 130 tdi 53 plate. I was suffering from low lpg the glow plug was flashing error codes were for brake position switch and eng temp switch. Replaced both with genuine vw parts myself the glow plug reset itself and the mpg went right up again 6 weeks later and im only getting 46mpg on the motorway doing 70 mph i was getting between 58/62mpg 6 weeks ago the car is driving fast with no problems i thought from what ive read on the forums if the maf was on its way out, then the engine performance would suffer or change but as ive no experience im probably wrong thanks for your help.

[lee99]

Hi paul thanks for tryin to help me with this problem. my car is a 53 plate bora 130 tdi. The glow plug was flashing codes were for bps and the eng temp replaced both with genuine parts glow plug reset itself. mpg went back up to 58/62mpg on the motorway doin 70mph. all was great then 6 weeks later cant get above 45/46mpg, tyre pressures all ok engine drivin great no performance change im stumped cheers mate.

[paul b]

No more fault codes?

I only get 46 anyway, but its a heavy A6, not a light, nimble Bora.

Paul