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 RAM1977PICKUP D300, 4D PICKUP, 3.7L ENG VIN B, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONENGINE PERFORMANCEMAP - ENGINE PERFORMANCE & MAINTENANCEENGINE PERFORMANCE AND MAINTENANCEINTAKE MANIFOLDS
1977 Dodge and Ram Pickup D300, 4D Pickup, 3.7L Eng VIN B, Automatic Trans
Intake Manifolds
1977 Dodge and Ram Pickup D300, 4D Pickup, 3.7L Eng VIN B, Automatic TransSECTION Intake Manifolds
| Condition | Code | Procedure |
|---|---|---|
| 15,000 miles or 12 months beyond most recent Chemical Engine Decarbonization | 5 | Suggest chemical engine decarbonization |
| Corroded, affecting sealability | A | Require repair or replacement |
| Integrated air or fuel control components inoperative | A | Require repair or replacement |
|
NOTE:
Inoperative includes intermittent operation.
|
||
| Internal air or fuel components damaged, affecting performance | A | Require repair or replacement of component |
| Internal air or fuel components damaged, not affecting performance | No service suggested or required | |
| Internal air or fuel components missing | C | Require replacement of component |
| Leaking | A | Require repair or replacement |
| Out of specification | B | Require replacement |
| Restricted | A | Require repair or replacement |
| Threads damaged | A | Require repair or replacement |
| Threads stripped (threads missing) | A | Require repair or replacement |
| Warped | B | Require repair or replacement |
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.