Make sure there is the correct voltage going to the dist. On yours I think you should have about 8 volts not 12. There should be a resistor wire to cut the voltage down.
Probably lack of die electric grease under the mounting surface of the module. This special grease keeps the module cool & lack of it could cause the module to overheat & burn out.
Ignition switches and body control modules are issues on these cars.
You should check the pick-up coil, it can short out the modules. I have ran into this problem before and was a the end of my rope. I found a pamphlet at the auto parts store and read through it and came to the conclusion that the pick-up coil was shot, replaced it and never had to put another module in. Probably lack of die electric grease under the mounting surface of the module. This special grease keeps the module cool & lack of it could cause the module to overheat & burn out.
Ignition module in the distributor.
It would have electronic ignition, no points.
A bad ignition module.
The 1991 Blazer has a current draw causing the wire to burn. You will need to trace the wiring out to find what is drawing too much current.
test ignition coil,ignition module,pick-up coil,electronic spark control,and knock sensor
I would expect that the power for the fuel pump would be supplied through the ignition switch so I would start there, that is check the ignition switch.
Probably ignition switch. Have it checked out.
I would replace the ignition control module that's in the distributor.
I would suspect a failing ignition control module.
Because it has HEI (High Energy Ignition).
IF IT IS A 4 CYL YOU PROBABLY HAVE A BAD CRANK SENSOR OR IGNITION MODULE.
There is a short somewhere in the ignition system causing the fuse to burn out. Start by replacing the ignition switch to see if that helps.
The ignition module that is in the distributor is probley bad.
Changing the ignition coil on a 1993 Chevy Lumina could be a hard and daunting task to someone who is unfamiliar with cars. It would be much easier and faster to take the car to a mechanic where they would have a better understanding and knowledge of the car and the parts it needs.
Make sure you have only about 8 volts going to it not a full 12. There is a resistor wire that should cut the voltage.
The buzzer that lets you know the key is in the ignition in a 1989 Chevy Blazer is in the steering column. To access it you would need to remove the steering wheel with a special tool, or remove the ignition assembly. The key makes contact with a tab that activates the buzzer.
I paid $35 for a new key with the chip in it.
Bad heater core.
I would guess Financials and HCM are 2 most used modules.
Yes, but I don't know why you would take the HEI / High energy ignition distributor out and replace it with 1 that has points and condenser. That would be a BAD move.
When you take a voltage reading at the coil with ignition on and the ignition points are open you would get the same reading on both + and - .
It could be a weak battery or a bad ignition coil.
You would have to drill out the center of the lock or have a locksmith pick the lock.