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.
Transmission Controlled Spark: Maintenance
Periodic maintenance of Transmission Controlled Spark components is not normally required, should a switch or valve fail to operate properly it should be replaced. However the following components do require maintenance or adjustment to keep exhaust emission system as a whole, working properly.
| Component | Service Interval (Miles) | |
|---|---|---|
| Oil Filler Cap | Clean Every 6, 000 | |
| Exhaust Heat Valve | Lubricate Every 6, 000 | |
| Drive Belts | Adjust Every 6, 000 | |
| Air Cleaner | Clean Every 6, 000 | |
| Replace Every 12, 000 | ||
| Distributor Cam Wick | Rotate Every 6, 000 | |
| Replace Every 12, 000 | ||
| Oil Filler Cap | Clean Every 6, 000 | |
| PCV Valve | Replace Every 12, 000 | |
| PCV Filter (6 Cyl.) | Clean Every 12, 000 | |
| Charcoal Canister Inlet Filter | ||
| (V8 Auto. Trans. Only) | Replace Every 12, 000 | |
| Carburetor | Adjust Every 12, 000 | |
| Spark Plugs | Clean Every 12, 000 | |
| Ignition Timing | Check Every 12, 000 | |
| MANUAL TRANSMISSION (GEAR) | AUTOMATIC TRANSMISSION (VEHICLE SPEED) | AMBIENT (AIR) TEMPERATURE | COOLANT TEMPERATURE | VACUUM APPLIED TO DISTRIBUTOR | |
|---|---|---|---|---|---|
| 3 SPEED | 4 SPEED | ||||
| 1-2 | 1-2-3 | Under 25 MPH | Below 63°F | Below 160°F | Manifold |
| 1-2 | 1-2-3 | Under 25 MPH | Below 63°F | Above 160°F | Ported |
| 1-2 | 1-2-3 | Under 25 MPH | Above 63°F | Above 160°F | None |
| 1-2 | 1-2-3 | Under 25 MPH | Above 63°F | Below 160°F | Manifold |
| 3 | 4 | 25-30 MPH | Below 63°F | Below 160°F | Manifold |
| 3 | 4 | 25-30 MPH | Below 63°F | Above 160°F | Ported |
| 3 | 4 | 25-30 MPH | Above 63°F | Above 160°F | Ported |
| 3 | 4 | 25-30 MPH | Above 63°F | Below 160°F | Manifold |
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.