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1996 Oldsmobile Aurora P0300 code

Tiny
CABLE_187
  • MEMBER
  • 1996 OLDSMOBILE AURORA
  • V8
  • FWD
  • AUTOMATIC
  • 122,000 MILES
Keep getting this random misfire code. Cylinder #2 has an excessive amount of gas going in it. The spark plug was covered in gas. It runs really rough in gear and I get a CEL and when driven the CEL fllashes so I have not driven it since. But I cant figure out what the problem is.
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Saturday, April 17th, 2010 AT 8:37 AM

4 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
That will most likely indicate a bad injector, and will need replacement
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Sunday, April 18th, 2010 AT 10:41 PM
Tiny
CABLE_187
  • MEMBER
  • 3 POSTS
It turned out to be a bad coil and a defective sparkplug wire. But now the car is overheating. I have only had this car 3 weeks and I have replaced plugs, wires, 1 coil, changed oil, and flushed and filled radiator and put in a new thermostat. Checked the fans and they work on a 12 volt source. Could it be one of the relays cause one of the was replaced right before I bought the car. I am kind of stumped. Never had so many things go wrong all at once.
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Wednesday, April 21st, 2010 AT 12:40 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Well, if the fans work. And one of the fans come on when the a/c is turned on(it is supposed to) then either the relay to the radiator fan is not good, or the engine coolant temp sensor is not good, either or
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Wednesday, April 21st, 2010 AT 7:37 PM
Tiny
CABLE_187
  • MEMBER
  • 3 POSTS
Thanks for replying to me it turned out to be the coolant tank cap seal was bad so a new coolant cap and we are smooth sailing. Again thanks for the help it is much appreciated
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Thursday, April 22nd, 2010 AT 12:12 PM

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