Doing electrical circuit testing of the thing's not working would be the way to find the problems . Not looking for magical fixes on here . Without testing anything said on here would be guesses . Are prepaired to replace a bunch of parts till it's fixed . Do you know how to do automotive electrical testing using a wiring diagram and a DVOM - digital volt ohm meter ?
the engine about 30 - 90 seconds and it will start and go another 3-15 miles and die again.
Do fuel pump electrical circuit testing an fuel pressure an flow testing .
Electric Testing Techniques You Need to Know
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter vehicle info. year , make , model . under system click on HVAC subsystem HVAC controls . Click the search button then the blue link's .
Does your vehicle have manual or automatic climate control ? Automatic has a blower motor control proccessor manual has resistor pack. an a relay for high speed. Does any speed work ?
Blower Motor Problems Auto Repair Help
Testing Electric Fuel Pump Problems with Voltage Drop Test
This is why repair shops charge what they do . Takes years of learning (training ) to get good at testing electrical systems. Plus the amount of tool's required. $$$$$$$$
The fuel gauge or the sending unit could be the problem or the insturment cluster . Testing ,hooking up a scan tool that can read codes in the insturment cluster , that can read codes in all the modules on the vehicle.