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Model specific boards => Golf mk2 => Topic started by: bigdirtyturbo on 29 May 2012, 23:51

Title: MFA Strange problem...????
Post by: bigdirtyturbo on 29 May 2012, 23:51
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??

Title: Re: MFA Strange problem...????
Post by: X4MGS on 29 May 2012, 23:55
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...   :laugh: :laugh: :laugh: :laugh:

Fill it up and do an average when you refill it....
Title: Re: MFA Strange problem...????
Post by: bigdirtyturbo on 30 May 2012, 00:14
Lol.. I wasnt thinking of the accuracy more of why its going up and then down??

Thanks anyway matey
Title: Re: MFA Strange problem...????
Post by: X4MGS on 30 May 2012, 00:26
You using setting 1 or 2 on the stalk?
Title: Re: MFA Strange problem...????
Post by: bigdirtyturbo on 30 May 2012, 00:33
You using setting 1 or 2 on the stalk?

Im not sure what you mean? i just click it to the mpg setting...
Title: Re: MFA Strange problem...????
Post by: X4MGS on 30 May 2012, 00:42
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...
Title: Re: MFA Strange problem...????
Post by: bigdirtyturbo on 30 May 2012, 00:53
How do i switch between the 2 of them?

Would this explain it dropping right down though?
Title: Re: MFA Strange problem...????
Post by: X4MGS on 30 May 2012, 00:55
Slide the switch on the stalk.....

Someone having a Malteaser Moment.... :laugh: :laugh: :laugh: :laugh:
Title: Re: MFA Strange problem...????
Post by: Seanl on 30 May 2012, 17:58
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.  :wink:
Title: Re: MFA Strange problem...????
Post by: bigdirtyturbo on 30 May 2012, 18:59
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
Title: Re: MFA Strange problem...????
Post by: CanisLupus on 30 May 2012, 22:20
I'm a bit curious from your other topic where we were discussing how to get your MFA MPG counter running again. Was it a vacuum leak somewhere in the end? Or was it something else? Cheers
Title: Re: MFA Strange problem...????
Post by: bigdirtyturbo on 30 May 2012, 22:24
me?? I didnt have any leaks on my vacuum pipe to the MFA..
Title: Re: MFA Strange problem...????
Post by: X4MGS on 30 May 2012, 22:29
I'm a bit curious from your other topic where we were discussing how to get your MFA MPG counter running again. Was it a vacuum leak somewhere in the end? Or was it something else? Cheers

Try disconnecting the Battery and check the earth wires... if its not a Vac leak...
Title: Re: MFA Strange problem...????
Post by: CanisLupus on 30 May 2012, 22:44
Ah, sorry bigdirtyturbo, mixed you up with somebody elses problem with the MFA from last week. Should have double checked first :)