I need help and I hope someone out there can help:
Last week I bought a Late 2002 Focus ( Newer Shape ). However after driving it for a week I have discovered that after driving for a bit (20 mins or more) The needle on the speedo will suddenly "sweep" up the dial, the volume on the stereo goes up and then it all goes back to normal. sometimes this happens more than once and sometimes it doesn't happen at all. However it is becoming more regular. I talked to the riginal owner and he said he had been back and forth to the local ford dealership and they kept telling him there was nothing wrong with the car. I have noticed today that after the car has this power surge thing you can see, if you look really closely, that the lights on the dash and the main lights pulse very slightly after this power surge thing.
I have read alot about the speed senser being the cause of a fault very similar to this one however the fault that needs the speed senser seems to be the reverse of my fault. they have a lose of power and I seem to be getting to much !
I would love some help