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General Forums => The Mess Hall => Topic started by: oldjeep on May 10, 2016, 03:57:07 PM

Title: P0304 code in daughters 97
Post by: oldjeep on May 10, 2016, 03:57:07 PM

Hello all

Have a recurring issue in my daughters 97 2.5L.  Started throwing a P0304 code a few weeks ago.  Replaced plugs, cap, rotor, wires and it came back a few days later.  Have done some googling but haven't found many ideas.  Any thoughts on what might be happening?

Title: Re: P0304 code in daughters 97
Post by: neale_rs on May 10, 2016, 04:11:36 PM

Maybe a bad connector somewhere, maybe even at the computer.

Title: Re: P0304 code in daughters 97
Post by: chardrc on May 12, 2016, 07:18:00 PM

Have you looked at the injectors? I had a recurring misfire code on my 02 wj which has the 4.7l (I know not the same engine....). Ended up being a injector clogging up. You could try swapping injector #4 with another injector and see if the code follows the injector.

Title: Re: P0304 code in daughters 97
Post by: oldjeep on May 30, 2016, 05:24:48 AM

Quote from: chardrc on May 12, 2016, 07:18:00 PM

Have you looked at the injectors? I had a recurring misfire code on my 02 wj which has the 4.7l (I know not the same engine....). Ended up being a injector clogging up. You could try swapping injector #4 with another injector and see if the code follows the injector.

Actually just ordered a set of rebuilt 4 hole injectors for it, as well as a new set of rods and lifters.  Figure I'd throw $125 worth of parts at it and see what happens. 

Title: Re: P0304 code in daughters 97
Post by: oldjeep on July 01, 2016, 12:14:53 PM

FWIW, the injectors fixed the problem, no codes in weeks.   Which is good since we just put it up for sale yesterday.