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Re: Vibration and weirdness.. Lost!
Not all codes set the SES, but generally those associated with the injector circuits will.
You may have mechanical problems that the PCM won't pick up without specific tests. You should have a cylinder contribution test run to check your injectors. If one comes up with that test, then you'll have a spot to look at. It may not be the injectors, but the CCT will (no make that should)pinpoint the cylinder(s) that are causing the problem. Compression test and other mechanical inspection will get you closer to the cause of your problem. If you swap the indicated bad injector with another, and the CCT code follows the injector, then that would confirm it as a bad injector.
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First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version  ), AIS, coolant filter w/"hokum" bracket, regulated return, heated mirror mod, lighted cupholder, Marinco heater plug-in.
Hard or no-start? Check Here
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