What did you do to fix your P0300 code?

[glenntroy]

I know this has been discussed many times, but I wanted to ask every with 2005-2006 4.0 jeeps, if you had this code, what was the final solution to correct it. I realize these jeeps are getting older, the plastic, wiring, rubber, etc., so curious specifically what you did that corrected it. Thanks

 

[Chris]

The dreaded P300 code and what worked for me
P0300 Code: Rough Idle And Stalling
P0339 & P0300 codes

Those are a few threads worth checking out.

 

[JKP]

On the 05, 06 it could be a bad OPDA.

Also, the 05, 06 PCMs are junk, although the usual codes are for O2 heaters. Other symptoms: gauges dropping out, Jeep glitching off.

 

[glenntroy]

I know this has been discussed many times, but I wanted to ask every with 2005-2006 4.0 jeeps, if you had this code, what was the final solution to correct it. I realize these jeeps are getting older, the plastic, wiring, rubber, etc., so curious specifically what you did that corrected it. Thanks