You're right about the need for good clean (good continuity) connections, not only ground connections but all connections. Something we should be checking as a matter of periodic maintenance on our older cars. Maybe someone has established, thru experience, a procedure or check list for each model that details where all the connections are that need inspection and cleaning. Also, the method of cleaning, what solvents, contact cleaner, and oxidation inhibitor to use. I tend to think that silicone grease as a good inhibitor but a terrible conductor. There are other substances designed specifically for this task that promote good continuity as well. I found some minor corrosion on my DME connectors, especially terminal #1 which leads to the negative side of the coil, so I set about cleanig all sensor connections. It made a small difference in performance. Anyone out there already done this? We could use some expertise here.
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