fuel pump may be bad...fuel fiter may be clogged...do you hear pump when u turn key over?
The fuel pump relay on that 92 Blazer with the 4.3 engine is located under the hood, on the firewall, drivers side, if there is more than one relay there, it's the one closest to the drivers fender.
More than likely you have a bad ignition switch however your anti-theft system could still enabled.
i had similar problem with 99 wrangler and if its the relay its located in the fuse box.
Either your starter solenoid, if not check the neutral safety or clutch safety switch.
First make sure that this battery has a charge. Check its volts. Then if the battery is good, make sure the conectionns are clean. Then clean the connection to the starter relay ( solenoid ) just beside the battery. Then if needed, clean the conx. at the starter. If all the conx. are good, and still no start, jump the positive battery conx. at the starter relay to one of the small plug in conx. If the starter engages, then possible bad ign. switch. Hope something works. Good luck.
might be starter relay, or the crank circuitry from the switch or to the starter from the relay. I would trace back from the starter to the starter relay back through the neutral safety switch to the ignition switch.
Because a switch is a 'permanent' action. A relay only completes the circuit while there is power. If there is a fault in the circuit, a switch will still allow power through, whereas a relay will break the circuit.
You may want to start with the brake fuse. If you still have turn signals and lights. you may also want to check the brake electical relay switch in the relay box Check as well the brake switch located at the brake pedal.
.....still lookin'
The fuel pump relay on that 92 Blazer with the 4.3 engine is located under the hood, on the firewall, drivers side, if there is more than one relay there, it's the one closest to the drivers fender.
Posible relay problem
In my '96 beretta the cooling fan relay switch is located on the drivers side strut tower. That may not be the problem. If your fan still won't work after changing the relay switch try the coolant temperature switch/sensor.
Had ther same problem, ignition switch fixed it.
try a blower motor resistor
A potential relay operates on the voltage potential created by the induced voltage in the starting winding of the motor. It is an electromagnetic switch whose coil is wired directly in to the motor circuit. When power is applied to the circuit, the motor starts . As the motor attains its running speed the start winding acts as an auto generator and the voltage potential produced energizes the relay coil which cuts out the start capacitor and the start winding . The start winding still acts as an auto generator , however , and continues to produce enough power to keep the relay energized.
If the fuel system is still holding pressure the car will start and run until the fuel runs out, The relay turns on the fuel pump.
I would suspect The hazard switch has failed and/or the flasher relay also. Replace the relay first & see if problem still exsists. If does, hold onto relay & replace hazard switch or combination of both.