now my truck is reading code P0303 what is this exactly?

2003 DODGE TRUCK
100,000 MILES
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BEAUTIFULHAZLEYES
  • MEMBER
  • 2 POSTS
Is this something ill be able to fix my self or dose it have to go to the shop? yesterday i came here and asked about maybe putting a solution in my radiator cause its blew and is flowing like a river. my toyota isnt working so i had to drive it to the store now the check engine light is on and its flashing. the truck sounds HORRIBLE!!!! It sounds like its drowning. and now its reading a code P0303. I know its cylinder 3 misfiring, but why is misfiring all of the sudden? Is this a major problem? Is it something that a home mechanic could possibly do or will it have to go to some expensive mechanic shop? PLEASE HELP PLEASE!!
Oct 31, 2011 at 11:29 PM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Start with checking plugs, wire... Chances are that is where the problem is. If you never tuned it up, it is time.
Nov 1, 2011 at 3:28 AM
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