well i am driving home on 75 in georgia and after about a half hour at 80mph the car just dies and i roll off to the side of the shoulder. Tried to restart and nothing would happen. I called a friend to come and get me. After about a half hour i open up the hood diconnect the maf and try to start the car and it starts fine except for the cel which i knew was going to happen but the car ran fine for the next 45 minutes at 80. I left the hood open after noticing the temp of the shifter lever.

A few notes :
The code pulled after it died was 1221. Ox sensor
The boot after the MAF is busted and needs to be replaced,
Before the car stopped the shifter was awfully hot. Like to hot to hold for more than a minute.
I was extremely concerned about the heat on the lever and it was noticably cooler with the hood open. Made me wonder if the clutch on the fan was engaging so i checked it when i arrived home. It does not appear to be locking up. I think this is being caused by not enough air passing thru the radiator.

Any thoughts? on what the initial cause could be for the engine quiting?

Chris
95 530i 163,000 Auto , 1975 Cessna 172M