Every now and then i start my 94 f150 XLT for the 1st time of the day and just take off without letting the engine get warmed up, I drive for a short trip to the store or something and turn it off, when i return to start the engine...it just turns and wont start. But i can get it started every time if i put the gas pedal to the floor first. does anyone know what this may be?

 

It could be a failing coolant temp. sensor,I have had to replace quite a few of them at work,it may be something else like ign. module or coil but once they start to fail they will usually act up all the time. I would try to get the computer scanned at your local parts store and see if you have any codes or look at the data from the coolant temp. sensor.

 

thanks, now that you mention it, my temp gauge has been on high lately but the engine isnt overheating.. so i went and picked up new thermostat, but havent swapped it out yet.