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1999 Isuzu Rodeo Question: Getting P0300, it used to be P0304 an change!

 

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Mauricio CR, 2.2L 4 Cylinder, Long Key, FL, November 20, 2012, 06:59
 Rookie

I just replace sparks, plugs, EGR Valve, clean the entire EGR pipes, o2 sensors seems to be ok, the car runs roughtly, and i spot some bubbles at the coolant

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  • Answer #1

    your.mechanic November 20, 2012, 09:37
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     Master

    reset codes and drive

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  • Medium-star Best Answer
    Miles Auto Services (884 Answers) , Richmond, VA - (804) 885-4176
    milesauto November 20, 2012, 10:15
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     Master

    May need to re-learn the crank sensor signal. You need a factory scan tool to perform this procedure. Correct spark plugs are improtant and the gap should be correct. Some bubbles in coolant could be normal if you are not loseing coolant or not overheating. If it is running rough I would try and disable spark to each cylinder one at a time to see if one of the cylinders is not contributing thus could mean a mechanical , fuel injection problem or an weak spark to a cylinder.

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  • Answer #3

    Greg's Orange Auto (13388 Answers) , Orange, CA - (714) 361-9386
    globalhelper November 20, 2012, 13:12
     Master

    seek diag and est from your mech

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  • Answer #4

    ziptie12 November 21, 2012, 13:56
     Master

    Get diagnosed - possible headgasket leak. AFTER FULLY warmed up and system purged , bubbles ARE NOT NORMAL.

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