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 MANUALSBUICK1985ELECTRA V6-260 4.3L DSLREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLETESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURES440-T4, (4T60/4T60-E) AUTOMATIC TRANSAXLENO CONVERTER CLUTCH OPERATIONW/ELECTRONIC CONTROL MODULE (ECM)
1985 Buick Electra V6-260 4.3L DSL
W/Electronic Control Module (ECM)
1985 Buick Electra V6-260 4.3L DSLSECTION W/Electronic Control Module (ECM)
1. Defective ECM.
2. Damaged, loose, or corroded connectors.
3. Pinched wires.
4. Third clutch switch Inoperative.
5. Inoperative solenoid.
6. Solenoid screen blocked.
7. Solenoid seal leaking.
8. Converter clutch shift valve and/or apply valve sticking.
9. Damaged or defective torque converter.
10. Damaged turbine shaft seals.
11. Damaged pump shaft seals.
12. Converter clutch blow-off check ball not properly seated in channel plate.
2. Damaged, loose, or corroded connectors.
3. Pinched wires.
4. Third clutch switch Inoperative.
5. Inoperative solenoid.
6. Solenoid screen blocked.
7. Solenoid seal leaking.
8. Converter clutch shift valve and/or apply valve sticking.
9. Damaged or defective torque converter.
10. Damaged turbine shaft seals.
11. Damaged pump shaft seals.
12. Converter clutch blow-off check ball not properly seated in channel plate.
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.