How do you repair codes PO300 and PO440

Tiny
ANONYMOUS
  • MEMBER
  • 1997 BUICK LESABRE
  • 180,000 MILES
How do you repair codes po300 and po440
Thursday, April 11th, 2013 AT 3:11 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,913 POSTS
The PO300 is a multi-cylinder misfire. That can be the result of many things. When was the last tune up? Have you checked fuel pump pressure? As far as the PO440, Evap Emission Ctrl Sys Error, that too is a very vague code. Anything I would say would be a guess.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, April 11th, 2013 AT 3:32 AM

Please login or register to post a reply.

Related P0440 Content

VIEW MORE

Sponsored links