mfa stuck on 99.9mpg

[Bdub]

I have got the same prob on my 8V ( 1989 ), Checked the hoses all ok, so I think mine is a faulty  sensor on the back of the instro cluster - I've given up and learned to live with it!

I know its a cop out!!!!!!!!!!

[Blue MK2]

Its an 1992 8V Digifant. Dirty engine in that pic but its very clean now. Cleanest ive seen in a mk2 for its age if i say so myself

[mk1]

If the vacuum pipe to the dash was split or disconected, the sensor will see less or no vacuum. Why would that make your mpg look higher?, I thought that the lower the vacuum (throttle open) the less mpg, higher vacuum more mpg. Sounds like a faulty sensor, easy check of the pipe and connection to the dash, unplug the pipe at the engine and suck it. If you can suck thru if, split or disconected, if you can't faulty unit. Eather way, dash out to fix.
Steve.

[Diluxe]

Steve,

wheres is the pipe connected at the engine bay side?

[mk1]

Can't say for sure on a mk2, on my mk1 it was a white/clear plastic pipe connected close to the throttle body. Should be the only small vac pipe going through the bulk head. (could be wrong  ) Anyone?.
Steve.

[Bdub]

Look on the picture that appears earlier in this subject, top right hand corner there is a little yellow cap ( where the brake servo pipe connects to the throttle body ) the thin clear plastic vac pipe connects onto a union here. it pushes into another rubber pipe.

[muppetsport]

mine is stuck on 99.9mpg aswell. need to change a bulb in the clocks anyway as the petrol guage side soesnt light up enough.

cheers blue mk2 for the instructions as to how to get the clocks out, was just gonna post for tips. guess i should buy a haynes manual or something

[pc16v]

cheers everyone.while i'me here,can any one tell me why my temp gage takes so long to show its up to temp ? also ....where is the water in my foot wells coming from,some one said that the plastic cover behind the door card   ?? i think i can feel water up the wheel well ,under the dash many thanks ,and sorry for hijacking  your page...paul. oh its a 91 8v 4 door..  mk 2

[Diluxe]

let us know muppet what you find when you take the clocks out, other than loads of wires

[muppetsport]

yeah, sure will. wont be able to do it till wednesday evening as me car is away getting fixed for the mot.

will take pictures for fun incase anyone needs them