I have a f-350 7.3 , 1989 diesel. problem will start when cold, run until completely warm, shut down go shoping for 20 min. come back and will not start? whats up.\r\nSteve H.

Your toyota technician should know what a "cold starting solenoid" is. It is the little thing that works your throttle until the motor warms up and something else takes over. I'd suggest going to another technician.

The cold start valve needs to be replaced. It is not letting the engine warm up properly.

If I crank the motor while it is st ??????? Probably ignition module . When it shuts off check for spark .

in my experience alot of times what happens when ignition systems get hot from running for a period of time the ignition coil breaks down and weakens when old and worn out then let it cool down for awhile then starts right back up. so look into checking into the coil break down for loss of spark

Check the water coolant thermostat. If it is stuck in the "open" position you are heating up all the water in the coolant system and this will take time. The thermostat keeps the water in the engine until warmed up to almost normal running temperature, only then does it allow the coolant to enter the radiator.

well its a long shot but it could be your catalytic converter is going bad or is clogged, i have seen them get so hott they glow red. this sometimes can be seen at night by looking under your car after it has ran to the point of stalling and dieing,, if thats the problem the car cant exhaust creating back pressure that robbs power and can cause your car to die.. after it cools the metal shrinks back and the car will runn again untill it getts hott.. i hope this helps

your ignition coil are going bad, they need to be replaced. once the car gets hot the circuit shut down the car when hot. once they cool your riding again until they get hot. thats your problem. Good Luck

It's definitely your injection pump seals mate.....common prob with these engines. My 1994 2.8TD was exactly the same until I had the sealls replaced. I went for the complete reconditioning and not just the main seal and it cost me £519 in total. Dunks

Check fuel pressure when it quits.

Have the Cam Position Sensor changed. Ford has a recall to replace it to the new style. Typically the CPS does not cause an intermittent problem b ut mine did the same and stopped once the CPS was changed. If Ford will not fix it the new sensor is around $20-25.