MFA Strange problem...????

[bigdirtyturbo]

Hi
Ive just cured 1 problem with my 8v and found another this evening while out on a run.

I had my battery dis-connected today so when i re-connected it the MFA had reset. So i decided to see what kind of MPG reading i was getting. I was quite happy to see that over a 30 mile journey ( mainly motorway ) my car reached 44.9 MPG... I thought this would probably be a little optimistic but was still happy with what i saw.

Once i arrived at my destination i turned off the car and left it for around 45 mins. I got back in the car started it up and the reading was still the same... But after only a few miles i had noticed the MPG dropping rapidly, I noticed that  it dropped at a rate of 0.1 MPG to every 0.1 of a mile or more.

When i finally parked up it was reading under 19 MPG and still dropping... Surely something is wrong here, has anybody got any advice??

[X4MGS]

Hi
Ive just cured 1 problem with my 8v and found another this evening while out on a run.

I had my battery dis-connected today so when i re-connected it the MFA had reset. So i decided to see what kind of MPG reading i was getting. I was quite happy to see that over a 30 mile journey ( mainly motorway ) my car reached 44.9 MPG... I thought this would probably be a little optimistic but was still happy with what i saw.

Once i arrived at my destination i turned off the car and left it for around 45 mins. I got back in the car started it up and the reading was still the same... But after only a few miles i had noticed the MPG dropping rapidly, I noticed that  it dropped at a rate of 0.1 MPG to every 0.1 of a mile or more.

When i finally parked up it was reading under 19 MPG and still dropping... Surely something is wrong here, has anybody got any advice??

Yeah - Don't rely on a 20+ year old system that was never that accurate when new...   

Fill it up and do an average when you refill it....

[bigdirtyturbo]

Lol.. I wasnt thinking of the accuracy more of why its going up and then down??

Thanks anyway matey

[X4MGS]

You using setting 1 or 2 on the stalk?

[bigdirtyturbo]

You using setting 1 or 2 on the stalk?

Im not sure what you mean? i just click it to the mpg setting...

[X4MGS]

On the stalk there is a switch...

Position 1 is for instant reading's or from when the car was last started.

Position 2 is the average since been reset by either disc the battery or using the reset button...

[bigdirtyturbo]

How do i switch between the 2 of them?

Would this explain it dropping right down though?

[X4MGS]

Slide the switch on the stalk.....

Someone having a Malteaser Moment....

[Seanl]

On the stalk it should look like        0 1 2 0       by pushing and holding to the left zero, this resets the journey readings. By pushing and holding the zero to the right, resets the total since last reset. 

[bigdirtyturbo]

Thanks guys, ive sussed it out now.. Avg MPG seems to be holding out at around 35..

Must of just been one of those days