FAILED AN EMISSION TEST. TROUBLE CODES: P0300 AND P0305

  • Tiny
  • Eli3000
  • 1999 Lexus GS 300
  • 166 miles

199 Lexus GS300. Failed an Emission test and the results were;
P0300: Random/Multiple Cylinder Misfire detected.
P0305: Cylinder 5 Misfire detected.

The car has been hesitating and misfiring on take off and/or any type of acceleration. Engine light, VSC off, and the ABS warning lights continue to stay on. It runs ok once I get up to speed, but as soon as I slow down and try to speed back up I feel the same all over again. Please someone help!

Do you
have the same problem?
Yes
No
Saturday, June 9th, 2012 AT 3:43 AM

1 Reply

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

Try replacing the plugs. You have a misfire on cyl 5. Pull that plug and check it.

Was this
answer
helpful?
Yes
No
Saturday, June 9th, 2012 AT 4:00 AM

Please login or register to post a reply.

Similar Questions