goodwillhinton

96 LS400 misfiring issues

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I have recently inherited a 96 LS 400 from my father and am having some misfiring issues. Car started idling very roughly and spewing smoke a week or so ago. Engine light came on and my repair guy said that codes showed cylinders 4, 6, 8 were misfiring. He replaced original cap, rotor, and spark plugs. Now codes are showing misfires on 6 and 8 but the problem is intermittent. He said that it may be a computer issue and I might need to have the dealer look at this. Thoughts? I don't really want to put much more money into such an old car but also don't want to give up on it if it isn't too difficult to resolve. Any thoughts or suggestions are welcome.

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If your father didn't repair ECU before, check your ECU first.

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