Overheating on the highway. 76, 2.0 Options

[SVG223]

My 914 overheats on the highway. I had concerns about the air flap, but I think the thermostat has broken and it stays in the open position. I thought something might be clogging the fan but it looks clear. I wonder about the heater air hose that goes over the motor. It could be blocking some air possibly. I may try to tie it out of the way. After exiting the highway and stopping at a stopsign the idle was extremely low, I was surprised it was still running. I turned the engine off for a while and it ran better after it cooled down. Any ideas would be appreciated.

[emerygt350]

The other symptoms point to something out of the ordinary. I would check your plugs for lean conditions, check that timing, look for detritus in the cooling fins. What does your oil look like? If it is low it heats up real quick too.

And buy yourself a cht gauge. Dakota digital makes a nice one and you can install it without cutting your heads up.

[SVG223]

The other symptoms point to something out of the ordinary. I would check your plugs for lean conditions, check that timing, look for detritus in the cooling fins. What does your oil look like? If it is low it heats up real quick too.

And buy yourself a cht gauge. Dakota digital makes a nice one and you can install it without cutting your heads up.

I will check the plugs. The oil looks clean.
I think the mechanic that just did the valves checked the timing and went over the car and said it was all good. He may not have driven it far enough for it to get hot.