: p0300



whos your caddy
02-19-11, 01:34 PM
replaced a bad fpr but still have code what would you do next?

Submariner409
02-20-11, 04:12 PM
replaced a bad fpr but still have code what would you do next?

This thread belongs down in Northstar Performance. It is not a Technical Tip. :thumbsup:

stoveguyy
02-21-11, 12:33 PM
cylinder misfire? could try new plugs but it probably is a bad coil pack. get another pack. either used or new. $200 or so. a cylinder can misfire because the plugs are wet. hopefully it is not a HG issue. does it run better as it warms up?

kckranz
02-21-11, 01:02 PM
Hook up an OBDII scanner (take it to AutoZone) and the tool will read the cylinder(s) misfiring as P030X where X is the misfiring cylinder. Troubleshoot from there - swap plugs, ignition cassettes, etc - take it back to AZ for another readout. Does the problem follow the cassette? plug? If so, replace that.