DieHardBuick
New Member
- Joined
- Jun 24, 2018
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 . Have the module tested and it tests fine. Wondering if it might be something else or a different module option. I would go with the TR6 if it has enough heat tolerance for daily driving in Texas. TIA