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I Replaced the fuel pump & overload voltage relays about a year ago. The car has some sputtering after cold starting then smooths out. Recently it has had a couple of instances of cutting off and idle surge. There is now an intermittent dull chatter sound coming from behind the glove box. Has anyone had this experience? could it be that I received a defective fuel pump relay or is this more likely a ground issue?
 
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