Awfulcanawful Posted January 11, 2009 Report Share Posted January 11, 2009 Working on a 1999 Tahoe 5.7L. No start engine spits and sputters. checked spark at plug consitant spark but is yellow in color. Removed coil wire and i am getting a very weak spark out of coil and not very consistant. Removed coil and ignition module from known good vehicle and installed. engine started and runs well. which part do you think i should buy the coil or the ignition module. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted January 11, 2009 Report Share Posted January 11, 2009 change one part at a time more than likely the coil is hoed if you have yellow spark though Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted January 17, 2009 Report Share Posted January 17, 2009 coil Quote Link to comment Share on other sites More sharing options...
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