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    Brandonabell's Avatar
    Brandonabell Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 21, 2007, 01:00 PM
    79 Ford won't stay running (is it the catalytic converter)
    I have a 79 Ford F100 with a 300 Straight six and it will not Idle or even stay reunning when I let off. It seemed to be running rich so I installed a new carb. After installing a new carb it ran fine for about 5 miles then it started acting up again. It runs great when I have my foot on the gas. I think it may be the catalytic converter. I know it is in tough shape, but could this be causing the problem? I would really appreciate any help.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Feb 21, 2007, 02:12 PM
    I believe your problem is ignition system related. Hopefully, the suggestions below will help.

    1. Test/replace the Ignition Control Module (focus on this first):

    http://www.partsamerica.com/ProductL...Control%20Unit

    2. Test/replace coil:

    http://www.partsamerica.com/ProductL...SearchFor=Coil

    3. Replace distributor cap, rotor, spark plugs (Motorcraft), and plug wires.

    4. Set idle speed and timing.
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