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poldaly
hi folks,
i recently bought a focus 1999 1.4lx 16v for my daughter. after a few days the speedometer, rev gauge, petrol gauge all started flapping from low to high while out driving, the trip milege clock also reset at zero. i am hoping its something easy to sort out .
please help THANKS
H3lly
It will more than likely need a new VSS (vehicle speed sensor). It can be a PITA to remove though if planning on changing yourself. The part is cheap enough from ford about £30 in your money. Don't waste money on plugging in code scanners etc.
poldaly
[quote name='H3lly' date='20 August 2010 - 12:59 AM' timestamp='1282265378' post='93869']
It will more than likely need a new VSS (vehicle speed sensor). It can be a PITA to remove though if planning on changing yourself. The part is cheap enough from ford about 30 in your money. Don't waste money on plugging in code scanners etc.
[/quote]
poldaly
thanks for the info, she tells me this morning it has not happened for 2 days. it only happens for about 5 seconds and stops is this normal and do you think it will get worse or is it dangerous
artscot79
[quote name='poldaly' date='20 August 2010 - 09:43 AM' timestamp='1282293231' post='93878']
thanks for the info, she tells me this morning it has not happened for 2 days. it only happens for about 5 seconds and stops is this normal and do you think it will get worse or is it dangerous
[/quote]

thats not the vss that will cause the speedo to drop and pick up what you have is the dials are going into diagnostic mode most likely culprit is the car has the wrong battery must be silver calcium lead calcium battery not a lead acid battery if its lead acid its being overcharged likely has a faulty cell in it the correct battery will solve the issue any garage will likely test it for freeif the battery checks out okay then ide go for the vss sensor but its usually the battery
poldaly
[quote name='artscot79' date='20 August 2010 - 02:33 PM' timestamp='1282314191' post='93916']
thats not the vss that will cause the speedo to drop and pick up what you have is the dials are going into diagnostic mode most likely culprit is the car has the wrong battery must be silver calcium lead calcium battery not a lead acid battery if its lead acid its being overcharged likely has a faulty cell in it the correct battery will solve the issue any garage will likely test it for freeif the battery checks out okay then ide go for the vss sensor but its usually the battery
[/quote]
poldaly
i think i will head to the garage.
Thanks for your knowledge
foceye.95
speed sensor, mine was exactly the same a few weeks ago.. mines a 1.8 but still the same problem, before it was fixed the problem did get worse.. the car started to cut out..

once new speed sensor though it was perfect and all those problems stopped
SkaterStan
We had a similar problem in our 1.4CL. It was just the speedo and mileage counter that would reset. Initially it was only for a short time but after a year it was pretty much every journey. I learned how to tell the speed from the rev counter and what gear I was in!

I changed the VSS myself and I'll second the previous poster that it was a PITA to get out. Fixed all the problems and the car drives a lot better now, although I did change the spark plugs at the same time so that may be the reason for the improved performance!


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