Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Detonation Sensor
Used only on 318" 4-Barrel V8 engines, this sensor is mounted in the intake manifold and sends a low voltage signal to the computer whenever engine knock is detected. The computer then retards timing a maximum of 11°, the actual amount being in proportion to the strength and frequency of the detonation. When the condition no longer exists, timing is advanced to its original value.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.