CowboyBilly9Mile
Charter Member
Hold on, lol, charter member doesn't equate to 40+ years of working as a tech at a Ford dealer. However, I've also worn out shoes from marching around the block many times.
Lots of posts here, but it appears that there are a series of electrical issues and most of them involve instrumentation. First reactions here are, grounding issue and connection/ground issue. I don't know your vehicles electrical, but I have seen very strange things happen when ground straps, if OEM, are missing. Frame to engine, battery to frame, body to frame, etc need to be there and in good condition.
The other thing that caught my attention was the part way back about the voltage at the battery dropping from 13.9 to 8.5V. I don't know how long that event took, but I do know that to do this will take some time (with a good and fully charged battery). So. Just something I noticed.
On parts, me only buys parts when diagnostics prove that buying it/them will fix a problem, or that methodical diagnostics demonstrate that the likelyhood is EXCEPTIONALLY high that the new part will cure the issue AND there is no other way (example, pinpoint diagnostic) to confirm a part failure. By doing this, it saves money, time, and a ton of frustration.
Somehow, I hops this helps. IMO, focus on one issue at a time unless the *things* you are working on are unquestionably, unrelated to each other.
Lots of posts here, but it appears that there are a series of electrical issues and most of them involve instrumentation. First reactions here are, grounding issue and connection/ground issue. I don't know your vehicles electrical, but I have seen very strange things happen when ground straps, if OEM, are missing. Frame to engine, battery to frame, body to frame, etc need to be there and in good condition.
The other thing that caught my attention was the part way back about the voltage at the battery dropping from 13.9 to 8.5V. I don't know how long that event took, but I do know that to do this will take some time (with a good and fully charged battery). So. Just something I noticed.
On parts, me only buys parts when diagnostics prove that buying it/them will fix a problem, or that methodical diagnostics demonstrate that the likelyhood is EXCEPTIONALLY high that the new part will cure the issue AND there is no other way (example, pinpoint diagnostic) to confirm a part failure. By doing this, it saves money, time, and a ton of frustration.
Somehow, I hops this helps. IMO, focus on one issue at a time unless the *things* you are working on are unquestionably, unrelated to each other.