Question about 2000 Ford Focus

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Car won't start!

Turn key nothing happens. Checked battery, its at 13.2VDC. Jump car and it fires right up! While its running I checked the battery again, its now at 16.5 VDC. "Alt is working". Next day, same thing. Put the key in, turn lights indicators, buzzers, nothing. Check battery, 13VDC. Put battery charger on and it fires right up. ?????? Help??????

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  • fishinhuntin Nov 16, 2008

    I will take your recomendations...thought there is no build up visible. Two weeks ago when this problem started, I went out and bought a new battery. When I changed it out, there was no corrosion. (The old battery was shot)

    If I brush the terminals and it doesnt fix it, can it be the ign switch or perhaps the starter siloind? I believe the problem is on the starter side of the ingination and not the charging system...


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Well six of ten is right,but frying scot ??17 volts ?? well frying scott as its obvious you know nothing about motor vehicles i suggest you refrain from answering any questions.......the only way to test a battery is with a drop tester where the reserve amperage is tested as without this all your silly gismos are a waste of time.yes a 12v battery should do this or that but in pratice its not always right.battery can read from 11v to 13v and be perfectly ok.Correct way to test a battery is use a heavy discharge tester ,secondly a heavy discharge induction amp meter is placed on the cable and engine cranked with main coil lead out or coil pack supply disconnected so that engine will not start and the amperage checked in case windings on starter motor are shorting through causing motor to draw too much current.So i would suggest you go to college and study for six years and try to pass a motor vehicle technicians course ,yes technicians course and not motor mechanics or national craftmans .But in all honesty studying anything to do with motor vehicles in this day and age is a waste of time in the uk as no protection is available unlike here in spain where you cant evan fit spot lights without somebody with my qualifications signing a piece of paper and charging for it trust me on this one,but UK ??? study mechanical engineering thats recognised ---car mechanics, garages dont want them,well not the likes of myself as i know more than the owner which means they dont want to be shown up as not knowing -or paying skilled wages.Unlike spain with paperwork where the legislation is different and i can charge for signing a piece of paper.VIVA ESPAñA

Posted on Dec 02, 2008

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Clean the cables. When you jump start the car you eliminate the problem because you hook the jumper cables to the wires that go to the starter. The car continues to run because the alternator supplies the power to keep it running. The lead (chemical symbol pb) posts on the battery rust, and when they do it produces a hard non-conductive surface - it must be scraped off.

Posted on Nov 16, 2008

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The battery on a ford focus 1.8 and 2.0 needs at least 17.2vdc to turn the starter. that's why when you put it on the charger it fires every time i recommend you get a new battery at a cost of about £70- £80.

Posted on Dec 01, 2008

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