2003 Ford Taurus SES wont start and theft light blinking
The other day my 2003 Ford Taurus SES suddenly would not start! I unhooked the batt. for 1 hr or more hoping it would reset, but of course that didnt work. I also tried another method of locking the doors for 60 sec. and then turning the key left for 30 sec. then right. This also of course did not work. All lights and features in the car work but when you try to start it all you here is the click of the starter then nothing. At that time all the idiot lights on the dash light up. When you turn the key back the theft light begins to blink again. Help! I will try anything!
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I see that you replaced battery, coil, plugs, wires, cap and rotor. Did you or do you have a check engine light or SES light on? If you did not I agree with the problem being Anti theft which includes a replacement key not having a transponder chip. BUT at the same time it could be something as simple as dirty battery post or bad battery cables, since sometimes it does start. I RECOMMEND CHECKING THE BATTERY CABLES FIRST. let me know if this works for you.
check that the small [exciter wire] is not loose or disconnected at the starter motor solenoide !
It could also be a bad starter relay!
try bridging the exciter terminal to the posative [big cable ] on the starter solenoide with a screwdriver or a piece of heavy guage wire to see if the starter activates!
if it works would it could be a faulty relay
the tech is right.. the trouble codes do not tell you what is wrong with the car... they just give you a general area to look in which involves testing multiple components and sensors. if the tech quoted you for and hour diag time i would say that you should at least expext to spend somewhere in the 300$ area depending on part cost.
Either you may be using a key that you had copied from the original or your chip went bad in your original key. Most of cars now a days have the key censor in the key so if it is the incorrect key it will not start your car or if it does not read that chip it will not start
make sure battery is fully charged and have tested for a weak cell and check out the alternator and the drive belt and if the car has over 40,000miles it needs a tune up plugs wires fuel filter and if all this fails have the timing checked and don't forget the crank sensor to have it checked