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Faulty MFA....
Posted: Thu Nov 12, 2009 8:24 am
by jxp
I have a fault on my MFA. It is just showing 99.9 mpg. Looked at a few threads and seems to look like a faulty speed sender. Anyone for one for sale??? Dont want to pay dealer prices if can help it.
Cheers
Re: Faulty MFA....
Posted: Thu Nov 12, 2009 8:36 am
by eamon1.3
Does the average speed etc still work? If so itl be the vacumm sender. Cant be bought new, i had to buy a second hand set of clocks
Re: Faulty MFA....
Posted: Thu Nov 12, 2009 9:07 am
by jxp
Average speed doesnt work either. Oil temp etc are OK seems to be al the speed/distance figures.
Re: Faulty MFA....
Posted: Thu Nov 12, 2009 9:39 am
by bluestreak56
This is a commom problem and occurs when as mentioned the vacuum sensor stops working. There was a post up on on a US forum depicting this issue:
http://www.sciroccoregisterforum.co.uk/ ... f=11&t=960
It could however also be a problem with
- The speed sensor
- The vacuum hose itself (if this has split fallen off etc)
Best advice would be to buy another set of clocks (same make either Motometer or VDO depending on what you have) test it in the car for a few miles to ensure it works, if so change over the vacuum sensor and speed sensor.
Shouldnt be too expensive on ebay, just make sure you buy clocks with the same number of connection pins at the bottom as yours (to connect to the wiring loom) - mine has 2 pins. Also ensure the MPG calculator is working.