Got a` 93 GMC F250 4.6 engine. I rebuilt the engine and now get a knock sensor code. replaced the sensor and computer no help. Removed knock sensor and hooked it up with jumper cables, still code came back. Any ideas? hate this pickup.

Forgot to say that the voltage tests OK

yes, they were pretty junky as they age. Well, either wiring is bad,computer is bad (if you put a used one in the knock sensor circuits often are burned out) OR the engine has a bad knock the sensor keeps reporting

Thanks Scotty, I'll replace the wiring to it. With it away from the engine and hooked up with a jumper cable I think the engine is OK. Ha`ve too much money in it now to walk away.