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good morning to all. i am very new to these forums. i have an 04 taurus that has a check engine light on it... i went to pepboys to have them read the codes. based on that i have replaced coil pack,plugs and wire, ect. i finally took it to kwik kar lube and he was unable to finish his evaluation on it but said it started dumping alot of gas into the engine. when he took it on a test drive, he said all of the O2 sensors flat lined on him and then came back up and started running just fine. he thinks its a possible electrical issue. any thoughts
 

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Discussion Starter #3
dont know what the codes were.... i drove it today to work, on my way, the idle dropped down and started to idle rough. not sure whats going on.
 

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We can not help you at all without knowing the code or codes!!!!!!
 

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without knowing the codes..kinda sounds like lazy o2 sensors and/or a vacuum leak causing a rich condition.
I doubt electrical, but wouldn't hurt to check wires for scathed insulation.
 
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