2003 Saturn L300 I have a Lw300

2003 SATURN L300
115,000 MILES • 3.0L • V6 • FWD • AUTOMATIC
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FARMBOYETHAN
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  • 1 POST
This car has just had all the spark plugs replaced and an ignition coil replaced to try and fix a cylinder misfire to no avail- the car only has a misfire in cylinder 3. I also cleaned the MAF sensor, and replaces fuel filter. The engine still misfires but i have to drive it for a while. I can feel it coming on (as in the problem might come soon) if i make hard accelerations my service light does not come on. This service light only comes on when it misfires and again i have to drive it a while before it misfires. The misfire is prevented however if i make the hard accelerations at this point. What could this be? Because when i first start driving its perfectly fine and the service light is not on.
Nov 29, 2014 at 4:53 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
Switch the injector from cylinder three with one of the other ones to see if the misfire moves to that other cylinder.
Nov 29, 2014 at 6:57 PM
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