Check Engine light just came back on today. The codes are PO300, PO301, PO302, etc up to PO306.
The plugs and plug wires are brand new (within 30 days) and the firing order is correct. The gap is correct.
What should my next step be?
Does the 1999 Jeep Wrangler have an EGR Valve or Solenoid?
Friday, December 14th, 2007 AT 8:46 PM