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.
1980 Plymouth Arrow Base, Automatic TransFACTORY OEM SERVICE PROCEDURE
Detonation Sensor Test
NOTE:
Detonation sensor is used on Calif. V8 engines only.
- Connect variable timing light or timing probe to engine. Start engine and run on second highest step of fast idle cam (minimum 1200 RPM). Tap lightly on intake manifold near sensor using suitable metal object.
- Using timing light or timing probe, look for decrease in timing (maximum 11°). Decrease will be directly proportional to strength and frequency of tapping.
- If sensor fails to perform as specified, replace and repeat test. If new sensor fails to perform as specified, check wiring back to computer.
Factory Service Tools
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.
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