After driving 75-85 mph for two hours, engine died at first stoplight with a thump, as if it had seized up, and wouldn't start, but started after five minutes; something cooled off, evidently. Sensor? Which one? MAF? Or VATS?

Notes: (1) Just installed 3-row radiator with 160 degree sensor & 190 degree thermostat; temp. doesn't go over 160. (2) recently replaced ECM. (3) Fuel injectors have never been checked. (4) Engine sputtered at low idle, before dying.

 

How much gas in the tank?

 

Nine gallons.

 

Hmm... Since the fuel cools the pump, long drives on a low tank can over heat the pump, causing it to stick. When they cool back down, sometimes they come back. But 1/2 tank, it's probably not that issue.

 

any codes?

 

Didn't check.

 

Gas gauge read empty, but took only 10 gallons to fill & read full afterwards. There was a thirty mile headwind over the last 110 miles, and I was doing 75-80 mph, so that pump could have heated & heated more when I stopped. You're probably right.

 

The starter didn't turn over or click, though the electric fan & cluster functioned.