2002 ford taurus ses. me and my dad ran my car through a diagnostics computer and it says there is something wrong with either the catalytic converter, the coil pack the spark plugs the spark plug wires or the cars brain. well we replaed all of these except for the brain and it didnt do anything. my car does a max of 3500 rpms and wont even do 4000. it doesnt get enough power when it drives wont get up to speed and shifts late??? any help would be appreciated
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I had this same problem not to long ago! It turns out the only way to fix it is to take it to the dealership. It seems the computer reads it wrong. There is a leak somewhere and you have fluids somewhere in the cylinders. The only way to fix it is to drain everything from the engine, remove the cylinders, clean them, replace them, and fill the fluids. This cost me $450.00 at the dealership! Good luck, but don't drive it too long like that!
I'm guessing that you have a check engine light on: http://repairpal.com/check-engine-light
It sounds like you have some sort of fault that is causing problems throughout the emissions control system. These are sometimes extremely complex problems, and it's rarely that all the parts associated with the codes just need to be replaced. Additionally, are you able to clear the codes with your scanner?
Last of all, it really sounds like the emissions faults have your car in limp mode. I often recommend for ugly problems like this to get the help of a really good diagnostic tech who knows his way around OBD emissions problems.
