2003 CHEVY SILVERADO RUFF IDLE

  • Tiny
  • ruff_runner03
  • 2003 Chevrolet Silverado

Engine Performance problem
2003 Chevy Silverado V8 Four Wheel Drive Automatic 106000 miles

03 chevy silverado. Getting an intermittent rough idle and has a mass air flow code as well as a 171 and 174 codes (lean condition) replaced the spark plugs/wires, mass air flow and fuel filter. Also tested the fuel pressure and came out ok, but still getting the rough idle. Runs great at any speed besides idle. Any thoughts?

Do you
have the same problem?
Yes
No
Friday, February 26th, 2010 AT 8:12 PM

1 Reply

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

The lean mixtures usually indicate a vacuum leak. Have you checked for leaks?

Was this
answer
helpful?
Yes
No
Saturday, February 27th, 2010 AT 12:18 AM

Please login or register to post a reply.

Similar Questions