Yes, the 1987 Chevy S10 pickup is equipped with an electronic ignition system (EI). By the mid-1980s, most General Motors (GM) vehicles, including the S10, had transitioned from older mechanical ignition systems (like points and condensers) to electronic ignition systems, which offered better reliability, improved fuel efficiency, and reduced maintenance.
What Kind of Electronic Ignition System Does It Have?
The 1987 S10 typically uses GM’s High Energy Ignition (HEI) system, which was introduced in the mid-1970s and remained common in GM vehicles through the 1980s and beyond.
Key Features of the HEI System:
- Electronic control eliminates the need for points and condensers.
- Integrated ignition coil in or near the distributor cap (depending on the model).
- Improved spark timing and stronger spark, resulting in better combustion.
- Some versions of HEI systems in later 1980s models are computer-controlled, with electronic spark timing managed by the Engine Control Module (ECM).
How to Tell If Your S10 Has Electronic Ignition:
- Look at the distributor:
- An HEI distributor is usually large, with the ignition coil often built into the top of the distributor cap.
- No points or condenser inside the distributor:
- Instead, you’ll find an electronic module controlling the ignition signal.
- Wiring harness connected to the distributor:
- Signals come from the ECM if it’s computer-controlled.
FAQs About the 1987 Chevy S10 Ignition System
1. Is the HEI system reliable?
Yes! HEI systems are known for their reliability and low maintenance, especially compared to old points-style ignitions.
2. Does the 1987 S10 have computer-controlled ignition timing?
On certain engines, yes. Many 87 S10s with fuel injection systems used ECMs to control ignition timing, while some carbureted engines still used vacuum advance distributors.
3. Can you upgrade the ignition system?
Yes, there are performance HEI distributors, aftermarket ignition coils, and spark control modules available to enhance the ignition system further.
Final Answer
Yes, the 1987 Chevy S10 pickup uses an electronic ignition system, typically GM’s High Energy Ignition (HEI). This system provides better spark, more reliable operation, and less maintenance than older, mechanical ignition setups. Some models from this year may also feature computer-controlled ignition timing managed by the ECM.
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