What does all that mean? do i need a tune up? or is this gonna cost more than the car is worth? I changd the plugs and plug wires yesterday and it ran great. Today it ran like a pig thru gum. suggestions?
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Your codes indicate misfires. What was done in the "tune up"? Misfires can be caused by any of several different causes including (but not limited to):
spark plug wires
The term "tune up" used to mean, "replace points, condenser, distributor cap and rotor, and plugs". Since most cars no longer have points, condenser, distributor cap and rotor, we need to ask what was done...
If it overheated and won't crank it means that the motor is ceased and would need a complete strip and rebuild if possible depends on damage caused and costs
may be cheaper to fit a used motor and get someone to look at the ceased motor for a quote on a rebuild
most important thing is to find out why it was overheating
you need to have your engine tuned up, unless it's been done recently. misfire means it's not getting fire or fuel to #7 plug. you may have a plug wire bad or a bad spark plug on #7 if you go to effort of sending it to garage just to replace one plug or wire,you'll pay labor for whole tune up. wires,plugs, and maybe a bad coil pack. suggest you have tuned up with new plugs and wires. also while they are there, have them check fire to #7 plug on coil first before you do a complete tune up. thank you for choosing fixya.com
SIMPLE YOU GET IT TUNED UP, OIL, FILTERS, SPARK PLUGS WIRES, AIR ELEMENT, ETC CHECK THE PC VALVE. THEN RESET OR REMOVE ONE OF THE BATTERY CABLES FOR 5 MINS AND HOOK IT BACK UP. BUT DONT GET ME FOR GRANTED IT CAN ALSO MEAN THAT YOU NEED A OXYGEN SENSOR OR OTHER PARTS. BUT REMOVE THE CABLE FOR 5 MINS AND SEE THEN WHAT HAPPENS. IF YOU HAVE SOME CODE ACTIVE IT WILL BE RIGHT. IF NOT YOUR NOT GONNA SEE THE LIGHT AT LEAST FOR A WHILE.
A P0303 code is a cylinder #3 misfire code. Usally a tune up, of plugs and wires fixes the problem. Normal cost is about $5 dollars a spark plug, about $85 in spark plug wires and around $100 in labor. So around $200-250 for the tune up. Then you'll need them to clear the check engine light, which may cost a diagnostic fee. If you haven't done a tune up in a while that would be the place to start. The other problem it could be is a fuel injector or a cylinder compression problem but those are unlikely. Hope this helps.
Check the wire pigtail that plugs into the coil pack. The plastic insulation around the four wires become hard and brittle, this can cause shorting and cross fires. Carefully pull the protective cover back to expose the four wires that go into the plug, check visually then bent the wires to see if they are flexible. If they are flexible and not brittle it is something else. Check out this link for detailed information and tests.