I DONE A TUNEUP ON MY 3

  • Tiny
  • matthewcecil
  • 2001 Ford Ranger
  • 150,000 miles

I done a tune-up on my 3.0L. I put new wires&new plugs & now my check engine light is on. The code is p306, Which by my repair manuel says is a #6 cylinder mis-fire. I've cleared the code several times&it only comes on in the city. If I drive on the highway the light will not come on. Can you steer me in the right direction PLEASE?

Do you
have the same problem?
Yes
No
Thursday, October 25th, 2012 AT 10:24 PM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 43,570 posts

Check for a clogged egr system first, disconnect egr valve if miss goes away it's plugged. Also check for tiny cracks in coils on top.

Was this
answer
helpful?
Yes
No
Friday, October 26th, 2012 AT 12:32 AM

Please login or register to post a reply.

Similar Questions