My ford taurus has been giving me problems with it revving on its own. the speedometer will go up and down on its own when I am at a stop light. it will stall when i operate my windows or door locks. now it won't start at all. it did not do this during the winter months, but now since it is getting warmer here in michigan it starts acting up. i took it to four different shops (one was a ford dealer) and they could not come up with an answer. what is wrong with this car?
SOURCE: 2002 Ford Focus and Wacky Speedometer
you can use the ford fault codes to check with out going to a dealer this may reset the poss ecu fault
easy check system without a laptop ?? as long as you have a digital trip
before you start your car press and hold the trip reset button turn the key to start your car and keep the button pressed within 10 seconds the clock will show 0000 when this appears each time you press the trip button it will self test differant systems full dash clock sweep all warning lights engine rpm alternator charge engine core temp fuel flow and will list fault codes which can be checked on this site atleast it will save you afew quid/euros dollers on ford checking it for you and you will know what if anything needs doing i hope this helps
SOURCE: 2005 Ford Taurus SE 3.0L V6 OBD Codes P0171 and P0174
The P0420 code is a Catalytic converter efficiency code check the compression.Swap the #1 injector to a different location to see if the code follows.Test the coilpak. A cracked exhaust manifold is the most likely cause p0171 and 0174 Induction air leaks, vacuum or some kind fuel restriction, weak fuel pump, restricted fuel filter etc.You also could have an exhaust leak near the upstream o2 sensor. If youtake it in they will probably use smoke to find out where the leak is.
SOURCE: Ford Escape stalls while driving.
As the post said earlier they went to a ford shop.... I suggest to have your vehicle inspected elsewhere. maybe have your o rings replaced and your fuel system cleaned.
SOURCE: My 95 Taurus Sho 3.2L, stalls every day. All
Will it stall if you keep your foot on the gas like the Idle speed is set low? Possible Idle speed motor? I'll have to look up the location of the low coolant sensor.
SOURCE: 2003 ford taurus idle problems had trouble codes
A code P0174 may mean that one or more of the following has happened:
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