pleas help very poor mpg

[kingy38]

how do i do that please bud.
i have vcds but only one i got from ebay but i can read codes but nothing else

[Crasher]

Engine 01, Measuring Blocks 08, Zone 001, coolant temp.

[kingy38]

hi, sorry for long delay, the temp was 88-90c. i thought i would change the stat as i never did it before but now i have no heating front or back. i tryed draining and doing again but still no heating

[niall campbell]

run car & put the heater on the hottest setting, put the fan for the heater on full speed

let the car run for 10 to 15 minutes and you have to make sure the temperature on dashboard is showing 90


This is a rule of thumb for all cars, you may have use bleed nipples located at various points if fitted

[Crasher]

Post 1998 VAG temp gauges are useless, the typical readings will be 90 at a real temperature of anywhere between 72 and 117... We were working on an A4 last week waiting for the fan to come on using the lap top to view the temp and it did not come on until 102 which is correct but the gauge still said 90.

[kingy38]

i now have heat front and back . there was a blockage is the hose going to the expansion bottle. now the gauge is moving up then back to low. but still crap on fuel.
can the gauges read wrong and still have fuel left. the center display is flashing refuel now but fuel light not on on the gauge

[Crasher]

Yes the two can disagree in either direction.

[kingy38]

how do i know whats right ?

[Crasher]

You have to know where the level is in the tank and use full VCDS to help you work out what is wrong.

[kingy38]

hi, thanks for the help, seems a bit better now, secondry water pump has stopped working but new bushes in my draw just waiting for better weather. then i had a split pipe on top rad pipe. car gets warm quicker now aswell but mpg still not great. about 400 miles to full tank