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Message: <blockquote data-quote="Michael Plummer" data-source="post: 1501443" data-attributes="member: 9170">Back in 2002, there was a national class action in California, Howard v. Ford Motor Co., that reimbursed owners for failed ignition modules that occurred during the first 100,000 miles. Many other vehicles were affected but seeing this is an SN-95 forum it affected Mustangs built from 1984 to 94/95 Mustang/Capri HO (5.0L).The Thick Film Ignition ("TFI") module, regulates the electrical current that fires the air-fuel mixture in each of the engine’s cylinders. * A TFI module's "design life" was documented to be the lifetime of the vehicle because of the solid-state circuits used.* A TFI's "service life" was discovered to fail when the module was subject to temperatures that exceeded approx. 254 degrees F.* A "failing" TFI is when your vehicle stalls or dies at any time and restarts when the TFI module cools. Other symptoms can include bucking, and hesitation, and may experience other "driveability" symptoms that may provide you a warning that the TFI module is about to fail. It's important to note that this will happen at all loads and not when you try to go into WOT.......But it's easy enough to replace.And despite what I posted above, I would still use a real Ford Motorcraft or Standard TFI module over anything else because the construction will be better over anything from the aftermarket.I hope this helpsMichael Plummer</blockquote>