Manager Forum

2007 DODGE GRAND CARAVAN SXT, 3.8 ENGINE, 61K CAME INTO SHOP WITH P0300/P0301/P0303/P0305 MISFIRE CODES, FAILING EMISSION TEST.

CUSTOMER HAD NOT REPLACED PLUGS AT 30 OR 60K, SO WE STARTED WITH PLUGS AND WIRES. AFTER DRIVING FOR ABOUT 1000 MILES, THEY CALLED WITH A REPORT OF POWER LOSS/ENGINE SURGING BETWEEN 30-45. THEY RETURNED TO FIND NO CODES IN COMPUTER. WHEN DRIVING WITH SCAN TOOL, WATCHING MISFIRES, THEY ARE NOT REGISTERING IN THE PCM. PCM HAS THE CURRENT FLASH LEVEL, WHICH WAS VERIFIED WITH OUR LOCAL DEALER. NO PROBLEMS FOUND WITH ANY IGNITION OR FUEL SYSTEM COMPONENTS.

ANYONE RUN INTO THIS BEFORE?

Welcome to the forum!

Fuel pressure is what? And O2 sensor readings are what? That could possibly clue you in on the issue.


I have seen wiring issues on those engines. Connections also.

and STOP yelling please, lol


Moderator note: All capital letters is considered yelling on-line.

I know this posting was way back in 2010, but was eneded up being the final solution to the problem

Gale

I'll try that again what ended up being the solution to the problem --- can't type too close to Christmas

It appears that the original poster isn't willing to share. Some go unanswered. if I were a betting man I would think alomg the lines of a fuel issue such as plugged filter, bad pump, etc.