2001 Jeep Cherokee CODE PO306

2001 JEEP CHEROKEE
70,775 MILES • 6 CYL • 4WD • AUTOMATIC
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RFITZ
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  • 1 POST
I SCANNED MY CHECK ENGINE LIGHT, CODE COMES UP PO306 #6 CYLINDER MISS FIRE. I REPLACED MY COIL RAIL .THIS DID NOT SLOVE THE PROBLEM .I CHECKED FOR PULSE SIGNAL AT THE INJECTER. IT HAS IT. I HAVE 150PSI COMPRESSION IS MY ECU BAD. WHAT ELSE COULD POSSIBLY CAUSE MY MISS FIRE PROBLEM.
Jan 19, 2009 at 5:25 PM
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BMRFIXIT
  • ✓ASE Certified Mechanic
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Did u replace the spark plug
and if not you should


also check if the new coil working (firing )
if not check wiring and connector




ohm the injector
Jan 19, 2009 at 5:32 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
Possible causes for this code are: defective Camshaft Position sensor, deftective Crankshaft Postion sensor, improper valve timing, vacuum leak, defective ignition system, fuel contamination, improper fuel pressure or capacity, spark plugs, accesory drive belt, or defective fuel pump.

Did you check your spark plugs to ensure #6 is receiving proper spark and is not fouled?
Jan 19, 2009 at 5:32 PM
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