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Standard Ignition PVS49 Ported Vacuum Switch
| Brand | Standard Ignition PVS49 |
|---|---|
| Contents | Ported Vacuum Switch |
| Fits | Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac · 15 vehicles |
OEM specification. Precision fit and performance from carefully constructed components.
Brass housing. High-temperature plastic adds durability and stable operation.
Thermal elements. Specially designed for improved performance.
Cross-references Carlson 13237, 2-29039 and 7P1006 for the same application. See all 9.
Ported Vacuum Switch for GM EGR Control
Standard Ignition PVS49 is a ported vacuum switch built with a brass body and high-temperature plastic housing to match OEM specification for fit and function. It uses thermal elements designed to improve switching performance in emission-control systems, making it a direct replacement for vehicles that rely on precise vacuum routing.
Compatible with 1982-1987 Chevrolet Chevette, Pontiac T1000, Oldsmobile Firenza, Buick Skyhawk, Cadillac Cimarron, Chevrolet Cavalier, and Pontiac J2000 applications, Standard Ignition PVS49 supports accurate EGR vacuum control in the original system layout.
- Brass and high-temperature plastic construction
- OEM-spec fit and performance
- Thermal elements engineered for improved operation
- Two hose connectors for ported vacuum routing
- Designed for emission-system service on select GM vehicles
Detailed Product Overview
This ported vacuum switch is used in EGR-related vacuum control circuits to regulate when vacuum is delivered based on operating temperature. Standard Ignition PVS49 is a practical replacement for aging switches that can cause inconsistent vacuum signal timing, drivability concerns, or emission-system faults. This part cross-references Carlson 13237 for the same application.
Vehicle-specific fitment includes Fits 1984-1987 Chevrolet Chevette, N/A; Fits 1984-1987 Pontiac T1000, N/A; Fits 1982-1983 Oldsmobile Firenza, N/A; Fits 1982 Buick Skyhawk, N/A; Fits 1982 Cadillac Cimarron, N/A; Fits 1982 Chevrolet Cavalier, N/A; Fits 1982 Pontiac J2000, N/A.
Common Issues This Part Can Address
- Delayed or incorrect EGR vacuum switching
- Vacuum leaks at a worn switch body
- Emission-system warning or inspection failures tied to vacuum control
- Rough idle or hesitation caused by unstable vacuum routing
- Hard-to-diagnose drivability issues on older GM compact cars
Installation Notes and Tips
Verify the original port count, hose routing, and mounting location before installation. Match the gray, two-port configuration to the removed switch and inspect vacuum hoses for cracks or soft spots before reconnecting. Confirm proper engine temperature operation after installation to ensure the switch opens and closes as intended.
Quality Assurance
Standard Ignition manufactures emission components with quality control maintained throughout the production process, from component selection to finished part. PVS49 is built to OEM specification for precision fit and consistent performance in service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1987 | Chevrolet | Chevette | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1987 | Pontiac | T1000 | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1986 | Chevrolet | Chevette | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1986 | Pontiac | T1000 | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1985 | Chevrolet | Chevette | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1985 | Pontiac | T1000 | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1984 | Chevrolet | Chevette | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1984 | Pontiac | T1000 | 1.6L | L4 | N/A | Gray; 2 Ports |
| 1983 | Oldsmobile | Firenza | 1.8L | L4 | N/A | Gray; 2 Ports |
| 1983 | Oldsmobile | Firenza | 2.0L | L4 | N/A | Gray; 2 Ports |
| 1982 | Buick | Skyhawk | 1.8L | L4 | N/A | Gray; 2 Ports |
| 1982 | Cadillac | Cimarron | 1.8L | L4 | N/A | Gray; 2 Ports |
| 1982 | Chevrolet | Cavalier | 1.8L | L4 | N/A | Gray; 2 Ports |
| 1982 | Oldsmobile | Firenza | 1.8L | L4 | N/A | Gray; 2 Ports |
| 1982 | Pontiac | J2000 | 1.8L | L4 | N/A | Gray; 2 Ports |
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