transistors,,,,,,can breakdown from heat and vibes......
you drive and LOG, the scope, to find the anomaly,,,
there is no glitch, or blip that goes away on its own......
diagnose it or don't......change parts if you like.....
and if you checked the grounds back in the spring...........HOW, visually?
what was the voltage drop on it?
I am not a shop and do not have a scope. I drive maybe 1k miles a year on this car, so even if I did have a scope it is kind of hard to diagnose and may drive for months with a very expensive diagnostic tool plugged in to catch it.
Yes I visually checked to make sure the grounds were attached , not frayed or broken off. Past that, no I have not done voltage drop tests.
I guess what I am asking here is please dumb down what you are asking me to do. I am not a shop or professional mechanic. If I had such equipment and skill level to diagnose such anomolies, i likely would not have asked others opinion.
That being said, I can either assume a certain 23yr old vital part to be bad from experience and other opinion, or I can test it. If you can advise how to test it without spending more money on the tool to test than the part costs, I am game to try it. If asking to do a specific test, please try to dumb down a little for me what you are asking to do. What am i testing voltage drop across? The specific sensor you think is the problem between its power pin and ground? Or just power from the battery to ground while the car is running? Ect?
I deff appreciate the help. You seem to be the only person to every answer anything on this forum, but please realize not everyone's experience is quite as vast as yours or have quite as detailed array of professional tools as you do. If I posted on the forum, its because I have no clue where to start. I am comfortable enough to figure out most things on my own, or use google until my eyes and fingers bleed before asking questions. Sometimes getting a few ideas from guys that have been through the ringer with these cars can help get on the right track before going too nuts with items that are not related. Some people have the tendancy to over diagnose and I really would like to keep that to a minimum.