I have a lot of these but this loose wire is black, heavy gauge, with a small eye end. In a small bundle from behind engine to passenger side. See photo. Any idea what it goes to?
It's that time of year in Texas. My 87 GN does not overheat in traffic, less than 190*, but without the normal air flow the Underwood temps seem to cause the ignition module to act up. It starts misfiring and throws a code 42. Let it cool off of start driving at normal speeds and it's fine again...