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    infantry89's Avatar
    infantry89 Posts: 4, Reputation: 1
    New Member
    		  
    #1

    Sep 15, 2010, 11:22 PM
    My 2001 Mercury Cougar why does my car hesitate and jerk after it hits 1/4 tank?
    My car runs top until it hits real close to 1/4 of a tank and below and then it hesitates, it's a 5 speed and it makes my car jerk.
    I have gathered it can't be water cause I have read other questions on here. But could this really be a fuel filter problem, wouldn't it happen all the time? Just wondering I'm not the most mechanically inclined but I know a simple thing or two.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #2

    Sep 16, 2010, 06:30 AM

    You will probably need to replace the fuel pump/tank unit.

    While doing the final diagnostics, you may want to gather a small fuel sample and see if there is any foreign substances in the tank.
    During one of those times when it's hesitating, taking the sample of that fuel could be beneficial.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #3

    Sep 16, 2010, 06:43 AM

    Empty the tank, change the filter, and you should be good to go.
    infantry89's Avatar
    infantry89 Posts: 4, Reputation: 1
    New Member
    		  
    #4

    Sep 16, 2010, 05:58 PM
    Thanks guys
    Much appreciated I will come here more often with questions about my car
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