Question about 2005 Ford F 250 Super Duty

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I have an 2005 ford f250 with the 5.4L. and its showing codes po174, po300, po305, po307 and i alreadt put a new maf in. what should it look at next?

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Did you resolve the other codes? p0300 random multiple misfire, p0305 misfire cyl #5, p0307 misfire cyl #7? You could have bad ignition coils or a vacuum leak. Check your coils and check for vacuum leaks at the intake manifold check vacuum hoses. Hope this helps!

Posted on May 23, 2011

  • gregjpowell May 26, 2011

    Will i change the coils and i find water under them. And then it showed a code for the back o2 on the drive side, so i changed the o2 and now thats fine. but its still has the po300 and po305 code, should i pull the plug and look at it? and i also think it has a leak but i haven't found it yet so its still showing the po174. Where are some of the main leaks come from, so i can start they?

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