Rick's Free Auto Repair Advice

Ford Ranger Misfire Codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, and P0316

Ford Ranger Misfire Codes

You’re not going to be a happy camper when you’re done reading this post. Ford has issued a TSB #05-26-3 that describes a fairly significant design problem with the cylinder heads on 2004-06 Rangers with the 3.0 overhead valve “Vulcan” engine. The problem shows up as any of these misfire codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, and P0316. The TSB states that the cause may be an exhaust valve “recession” that causes a loss of compression. Ford wants you to do a running compression test and a cylinder leakdown test. Click here to see how that’s done. If the results show low compression, the only fix is to replace BOTH cylinder heads with the new redesigned heads now available from Ford. The repair costs may be covered by your warranty. Check with the dealer to make sure. This is a costly repair.

For more information on this repair or any others for your vehicle, buy an online subscription to either Alldatadiy.com or eautorepair.net. Click on this link to compare the two services: Compare Alldata and Eautorepair.

If you just need information for a single repair and want to save money,eautorepair offers a lower price 1-week subscription for only $11.99. Or, if you’ll be working on this vehicle in the future, you can buy a 1-year subscription (Alldatadiy.com for $26.99, or eautorepair.net $29.99)

© 2012 Rick Muscoplat

Posted on by Rick Muscoplat


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