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 MANUALSPONTIAC1986GRAND PRIX BROUGHAM, 3.8 AREPAIR AND DIAGNOSISENGINE PERFORMANCEADJUSTMENTTUN E-UP - V8 (CANADA)SPECIFICATIONS
1986 Pontiac Grand Prix Brougham, 3.8 A
Tun E-Up - V8 (CANADA): Specifications
1986 Pontiac Grand Prix Brougham, 3.8 ASECTION Specifications
IGNITION TIMING SPECIFICATIONS
| Application | Degrees BTDC @ RPM |
|---|---|
| 5.0L | 4 @ 500 |
| 5.7L | 2 @ 600 |
FAST IDLE RPM SPECIFICATIONS
| Application | Degrees BTDC @ RPM | |
|---|---|---|
| 5.0L | ||
| Auto Trans | 1850 | |
| Man Trans | 1500 | |
| 5.7L | 1850 | |
CURB IDLE RPM SPECIFICATIONS
| Application | Degrees BTDC @ RPM | |
|---|---|---|
| 5.0L | ||
| Auto Trans | 550 | |
| Man Trans | 650 | |
| 5.7L | 600 | |
PROPANE ENRICHED RPM SPECIFICATIONS
| Application | RPM | |
|---|---|---|
| 5.0L | ||
| Auto Trans | 570-610 | |
| Man Trans | 710-750 | |
| 5.7L | 620-650 | |
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.