Ford Repair: no power, throttle position sensor, batt cables

Question
QUESTION: i have a 1997 couger and all of a sudden no power at all batt/good alt/good fuses/good but no dome lights nothing there was a theft light flashing on the dash but it does not now the haynes book i bought is no help please help me i just paid 8.000$ for this perfect car that is not doing squat?

ANSWER: I assume that you took the battery out and had it tested.If the battery tested good and you have no dome light coming on then you have a bad connection at the battery.Or perhaps even a broken battery cable.

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QUESTION: no the cable ends were painted but your advice led me to that thanks but now the car idels good and wants to die when i hit the gas. egv? maybe?

ANSWER: Have the trouble codes tested.You may have a throttle position sensor going down.Go ahead and change the fuel filter if the check engine light is not on.

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QUESTION: ooh you are good the batt cables were painted no conn.now i replaced the purge valve and the evg i think thats whats it called not fun the car idels good but dies and sputters when i ease on the gas the purge has two lines on it one has an arrow that says eng and the other one had nothing hooked up.close to the evg? is a yellow and white pluge hooked to nothing cant fing were it goes im so stressed out please help

Answer
If the car will not drive to be tested then you will need to buy a scanner.You can always take it back.Find what codes are present.It is imperative that you do that.I had trouble understanding you're last reply,it was a run on sentence.But that is o.k.Get the codes read.