MFA Problems

[Blazing Storm]

Thanks anyway. I'll definitely take a look tomorrow.

[monzablue16v]

Mines balloxed too kind of given up on it tbh tried changing the clocks and allsorts, still no bloody joy!!

[Blazing Storm]

What readings work on yours?

[monzablue16v]

Oil temp, Outside temp, Time. And thats it!

[Blazing Storm]

I reckon oil temp may work on mine if I changed the sender. Looks like we're in the same boat. Rather puts me off replacing the clocks. I wonder what might be causing it then? I've heard there's a little black box under the dash that controls the MFA but not sure it's true. Another thing I'll look into tomorrow. Rubs would probably know. Seems to know his stuff.

[monzablue16v]

Changed that too, it controls the ISV. It used to work thats the annoying thing I think it stopped when I changed my bulbs for LEDs.
I have changed allsorts matey
All vac hoses,
all temp senders,
Clocks,
ECU, Ignition amplifier,
Voltage Regulator in clocks,
Vac unit in clocks,
Speedo Cable,
Oil pressure sender,
Oil temp sender,

 my last ditch attempt is to change the LED's back to bulbs and the stalks and see if that cures it, can't see why it would but you never know!

[Blazing Storm]

To answer my own question from earlier I've found I can keep my original mileage if I do the same as was done here: http://www.golfgtiforum.co.uk/index.php?topic=46057.70

[rubjonny]

that hose isnt to sdo with the econ gauge, that would be working off the vac hose to the back of the clocks.  Fort a start the digifant wasn't even invented when that gauge was around
That hose and the other blanked of hose at the front is used for automatic engines and things like the emissions controls fitted to countries like the US with stricter laws.

Looking at your issue I'd say nthe problem is due to the speedo sensor screwed to the back of the speedo, without this non of the milage & mpg related settings will work.  Also your oil temp gauge is buggered, or the wiring to it has snapped, or just a dirty connection between the 2.  The oil temp sender is the small one on the oil filter housing with a black/green wire, to test if it the sender or wire, remove the wire and earth it to the block.  If the gauge shoots to max you know its a sender issue or the connection needs cleaning up!

[Blazing Storm]

Thanks rubjonny.

"Looking at your issue I'd say the problem is due to the speedo sensor screwed to the back of the speedo, without this non of the milage & mpg related settings will work."

How is best to fix this?

Is it the black box here:


Reference: http://www.golfgtiforum.co.uk/index.php?topic=46057.70

Do I simply replace it?

Cheers

[rubjonny]

1st thing to do is just have a shufti at it, make sure its screwed in place properly and the PBC is clipped in it properly.  If it all looks ok you could find one from another set o clocks and swap over, but you would need another set o GTI clocks!  If you got another set o clocks just chuck em in, if it fixes it you know its a problem with the old cluster, if not issue is elsewhere...