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Topic: MFA (Read 516 times) previous topic - next topic

MFA

Hi all, hoping this is the right section. I've got a problem with my MFA, as in in external temp is not giving me a reading. I've spoken to my local VW specialist and he says there is nothing wrong with temp quage and that it might be an MFA problem. Anyone got any ideas. I have seen details about a BILTECHNIK that does MAF repairs but I can't find any contact details.

Re: MFA

Reply #1 –
i have not known about a external temperature reading in a gti.
is the instrument included in the digital clock, or where is it exactly ?

with a little bit of effort, the facia panel could be unmounted
and one could probably check the signal of the sensor on the plug there.

Re: MFA

Reply #2 –
The temp sensor looks like a little plastic fixing and pushed through the left hand side front wing behind the bumper. Sometimes you see them lose in the engine bay, assuming someone did some work, and didn't know what it was and where it went so left it hanging.

Quote from: richie2480 on
I've spoken to my local VW specialist and he says there is nothing wrong with temp quage and that it might be an MFA problem.

I'd be interested to know what they tested to come up with this conclusion.

The parts involved are:
  • The the sensor in the wing
  • The switch on the stalk - if it cycles through the functions I can't see this being an issue
  • The onboard computer bit of the MFA itself - if the other functions are working I can't see how that would be an issue
  • The wires that join the above components together

I'd be tempted to look for the sensor, check it's condition and follow the wires back through the bay.
 

Re: MFA

Reply #3 –
I would agree with the sensor being the problem. Access through the left front wheel arch.