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97 4.0 cutting out.. need some insight please

754 views 5 replies 3 participants last post by  stokes 
#1 ·
i have a 97 grand cherokee with the 4.0 in it.. it seems to stumble or cut out while driving several times then stops and runs fine.. it does this every now and then.. i just welded a big crack on the header and now it seems to be worse.. can this be a clogged cat? or faulty ignition?
 
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