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No such thing on your car. The temp sensor tells the computer what the engine coolant temp is. If it were faulty you would get a check engine light. I would have the fuel pressure checked before and after you crank the engine. The pump relay provides power to the pump when you turn the key on to recover some of the lost fuel pressure after the car sits. The one way valve in the pump is supposed to prevent the pressure from dropping. If the fuel pressure drops to zero it could take some time to crank the engine enough to get it back up.
In the morning, turn key to on position for 5 seconds. Do not crank.Then turn off for 5 seconds. Repeat this about 5 times. Then try to start. If engine starts right up, the fuel pump check valve is bad. Meaning all fuel in fuel line is returning to the tank when car sits overnight. The only fix is to replace fuel pump. If that doesn't work, replace coolant temp. sensor for the computer. About a 12.00 part.
Safer is to use 'carburetor cleaner' which is also flammable but a little less dangerous than using gasoline.After sitting a long time, our modern gasoline gets tired; never allow something to sit so long without adding some 'fuel stabilizer.'If possible with your car, I would drain (siphon) the tired gas out and replace it with a few gallons of fresh. Really tough starting problems can also be overcome with 'starting fluid' which is pure ether and very flammable.Any of these may require the removal of the engine air filter so the liquid gets into the intake manifold. Stale gasoline can also gum up the fuel injectors which may have to be removed for service if none of the fluids causes the engine to fire.
i know industry jargon can be confusing, but lets try this. if it turns over but won't start, it could be your ''ignition module'' that sits on top of the vave cover on the motor or it might be the fuel pump or filter. make sure when you crank the engine that the key is all the way turned or it may not always make a proper contact to activate the ignition module. iv'e seen this before & had to change the ignition switch & all worked ok after that. i would need to know engine lt size to give you more details on the matter. please get back to me.