was the solution some heat paste, or larger heat sink?The older v6 engine ecus had a well known issue with heat soak into the ecu easy to diagnose just drop a couple of ice packs near the ecu when it won’t start wait a couple of minutes it should start also the multi plugs in the engine ecu box and the coil one under the engine cover can both have heat issues
Replace the ecu problem is with v6 ecus if you pull them out at the wrong time you can brick them.was the solution some heat paste, or larger heat sink?
I like the diagnostic method, beats taking the ECU out and throwing into a freezer!!