hey all, got a mk1 fg xr6t. got tuned to 390rwkw on 98, all the supporting mods for it. car was running nicely right up until a week and a bit later, the pcm stopped sending signal to coil 5. swapped coils around and the coil from cylinder 5 worked in other cylinders.
new ecu and new coils (genuine ford not aftermarket junk), ecu calibration from ford and some $$$ later, it's still misfiring. ran vac tests, checked injectors and adaptors. only thing that remains the same is harness, which hasn't been touched in any way so unsure of how it could have made the first pcm driver fail.
fingers crossed the second computer isn't f#@ked.
has anyone else had these issues and if so how were they resolved?
my tuner isn't a ford specialist but has tuned a good handful of high power barras without fault. my fg and another customers (his is mk 2) got pretty well all the same parts and got work done at the same time have the same fault. (both copped code p1358) but my car was perfect for a week and his car didn't even make it to final stages of the tune.
my tuner and another local-ish tuner have beef which I don't want to become a part of so no jumping ship or naming them.
any help would be appreciated because it's been near a month and I miss driving my car and feeding commodores