Compression Ignition Addict
Join Date: Feb 2010
Location: Farmersville/Dayton, Ohio
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It doesn't necessarily control the injectors, it just fires them when the PCM tells it to. They are known to wear out overtime, and will also get water in them that will short them out. Best way to troubleshoot it is to borrow a known good one and swap it in.
And its the big silver box on the fender. I believe its 3 bolts, and 1 large plug with a bolt in it. Very simple to remove. On the SD's its inside the fender, and a PITA to get to.
97 F-250 ECLB 7.3/E4OD/4wd, 216k miles: FFD 250/200%'s, stock turbo, built trans, e-fuel, Swamps IDM, shimmed 910's, Melling LPOP, welded cam gear/modified pick-up tube. Built and tuned by me
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97 F-250 ECSB project truck:250/2's, Gen 3, S468, SD axles, studs/springs, ZF-6