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 MANUALSCHEVROLET1983MONTE CARLO V8-350 5.7L DSLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSADJUSTMENTSDIESEL INJECTION
1983 Chevrolet Monte Carlo V8-350 5.7L DSL
Diesel Injection
1983 Chevrolet Monte Carlo V8-350 5.7L DSLSECTION Diesel Injection
Refer to Diesel Engine Performance Specifications chart for curb and fast idle speeds.
Fig. 2 Slow Idle Adjustment Screw Location:
CURB IDLE SPEED ADJUST
1. Apply parking brake, then block drive wheels.
2. Adjust throttle linkage, if required.
3. Start engine and allow to reach normal operating temperature, then shut engine off.
4. Remove air cleaner assembly.
5. Connect diesel tachometer J-26925 or equivalent, following manufacturer's instructions, then disconnect vacuum hoses as directed on vehicle emission label.
6. Disconnect two lead connectors at generator, then start engine and place transmission in Drive.
7. Turn slow idle adjustment screw, Fig. 3, in or out and set curb idle speed to specifications.
8. Disconnect tachometer, then reinstall air cleaner.
FAST IDLE SPEED ADJUST
1. Apply parking brake, then block drive wheels.
2. Adjust throttle linkage, if required.
3. Start engine and allow to reach normal operating temperature, then shut engine off.
4. Remove air cleaner assembly.
5. Connect diesel tachometer J-26925 or equivalent, following tool manufacturer's instructions.
6. Disconnect vacuum hoses as directed on vehicle emissions label.
7. Disconnect two lead electrical connector from generator, then start engine and place transmission in Drive.
8. Disconnect electrical connector from engine temperature switch.
9. Install suitable jumper wire between engine temperature switch connector terminals.
10. Turn screw on fast idle solenoid inward or outward and set fast idle speed to specifications.
11. Remove jumper wire, if applicable, then reconnect all electrical connectors and vacuum hoses.
12. Readjust curb idle speed, if necessary.
RENDER: 1.0x
NO RELATED
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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.