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Project Ugly Horse: Part VI

Solid axle? What solid axle?
I was fully prepared to embark on a seven-day journey down a rabbit hole of broken bolts, internet hearsay and consternation.
This should not have gone this easily. Having a long and checkered history of simple projects punctuated by much wailing and gnashing of knuckles, I was fully prepared to embark on a seven-day journey down a rabbit hole of broken bolts, internet hearsay and consternation when I finally decided to lay hands on the '89 Mustang with the goal of relieving the car of its stock rear axle. Instead, it took less than a full morning's worth of work to carve the old 7.5-inch solid axle from its moorings and mock up something, well, different.

Submit your questions for Autoblog Podcast #329 LIVE!

We're set to record Autoblog Podcast #329 tonight, and you can drop us your questions and comments via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #329
Subcompact sales slump, yet again

NHTSA closes Ford F-150 EcoBoost acceleration probe

Typically when we report on the findings of an investigation from the National Highway Traffic Safety Administration, it's because the government body has discovered a safety issue and prescribed a recall. In this case, however, NHTSA has closed an investigation into a reported performance deficit without ever getting to the recall stage.
The issue revolves around the Ford F-150 - specifically those equipped with the 3.5-liter EcoBoost engine - of which some 360,000 were built in the 2011, 2012 and 2013 model years. After receiving an initial 95 complaints, NHTSA opened an investigation last May - almost a year ago - into the reported issue of reduced engine power under hard acceleration. The agency has since received a total of 525 such complaints, and Ford itself reported receiving over 4,000.
Together, NHTSA and Ford determined that the problem resulted from cylinders misfiring, an issue itself stemming from water getting into the charge air cooler (CAC) mated to the turbochargers. In particularly humid or rainy conditions, water was found to get into the CAC, causing some of the cylinders to misfire, which in turn triggered the ECU to disable those cylinders in order to protect the catalytic converter from damage.