It will not start until cold and then you repeat the cycle again. This happened to me while on the highway. No warning. It just died. I had to way until the car cool down. Luckely, it was a cool night so made it home. I did not noticed a faint SRS light going on and off. However, my A/C blower was also making a sound (I changed the brushes since then and no more blower sounds.) After that day, car continues to function great when is it cold but, as soon as it warms up. It starts acting up. The last time this happened. I crove the car for about 20 minutes with no problems. I went to the store for about 20 minutes. When I came back, I started the car and it run poorly like if it was missing a cylinder or two. The symptoms where worse when I tried to accelerate. I barely made it home (less tan 10 minutes away) going about 10 miles per hour. When I got home I disconnected the electrical connections (one by one) to the EHA, ICV, water temp sensor, check all the fuses, removed and reinstalled the OVP, Fuel Pump Relay. I tried to start the car again after each item was removed. The car would not start. All the instrument lights were on. One thing I did not notice before is there was a clicking noise behind the instrument cluster when I tried to start the vehicle (Hall-effect speed sensor?). That was about a week ago. Today I started the car on the first try. Running fine while cold. While researching, I know it could be a number of things like OVP, Fuel Pump Relay, Crank Position Sensor, coil, etc.
By the way, I tried a different FPR with no improvement in the problem, I suspect this is electrical...Can the Hall Effect speed sensor stall a car...?
What gives...?

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J.H.
'86 300E