Welcome back:
First, you are correct. A crank sensor wasn't used on this model. However, the most common cause of spark loss on it is related to the ignition control module in the distributor. Here are directions for replacement:
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1993 Chevy Truck S10/T10 P/U 2WD V6-173 2.8L
Ignition Module Replacement
Vehicle Powertrain Management Relays and Modules - Powertrain Management Relays and Modules - Ignition System Ignition Control Module Service and Repair Procedures Ignition Module Replacement
IGNITION MODULE REPLACEMENT
Typical Distributor Components
Pic 1
I highlighted the part in Pic 2
REMOVE OR DISCONNECT
NOTEIt is not necessary to remove ignition distributor assembly from engine.
- Distributor cap and rotor.
- Two module attaching screws, and lift module up.
- Leads from module. Observe color code on leads as these cannot be interchanged.
- Module.
INSTALL OR CONNECT
NOTEDo not wipe silicone grease from metal face of module or distributor base (where the module seats), when reinstalling the same module. If new module is to be installed clean distributor module base and spread new silicone grease on base and metal face of ignition module. The purpose of the silicone grease is to cool module.
- Module.
- Leads to module.
- Module attaching screws. Tighten to 2 Nm (18 lb. in.)
- Pick up coil.
- Cap and rotor.
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Before just replacing it, pull trouble codes. You don't need a scanner. You can do it with a short jumper wire or even a paper clip. Here is a link explaining how it's done. Do this and let me know the results.
https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method
Let me know what you find.
Joe
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Tuesday, October 22nd, 2019 AT 8:52 PM
