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.
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HOMESERVICE MANUALSDODGE AND RAM1982MIRADA 3.7L ENG VIN EREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSELECTRONIC FUEL CONTROLTESTINGELECTRONIC SPARK CONTROL SYSTEM TESTSSPARK CONTROL COMPUTER SPARK ADVANCE TEST
1982 Dodge and Ram Mirada 3.7L Eng VIN E
Spark Control Computer Spark Advance Test
1982 Dodge and Ram Mirada 3.7L Eng VIN ESECTION Spark Control Computer Spark Advance Test
- Warm engine to normal operating temperature. Disconnect carburetor switch or unground it by placing a piece of paper between curb idle adjusting screw and switch. Be sure that coolant temperature sensor is connected and working properly.
- Remove and plug vacuum hose at vacuum transducer. Connect an auxiliary vacuum supply to vacuum transducer and apply 16 in. Hg. Increase engine speed to 2000 RPM and wait 1 minute before checking specifications. Advance specifications are in addition to basic advance. See Spark Advance Test Specifications table
.Spark Advance Test Specifications
Computer Part No. Spark Advance (1) 4145907 30-38° 4145980 30-38° 4145996 30-38° 4145998 30-38° 4289034 16-24° (1) With engine speed at 2000 RPM and 16 in. Hg vacuum applied. - If computer fails to obtain settings, replace computer.
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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.