| Manifold Absolute Pressure Sensors |
What they doSense and signal the ECU, changes in atmostpheric pressure and / or engine vacuum so the computer can control the fuel and ignition operation for varying Failure SymptomsPoor engine operation, black smoke, stalling, surging and catalytic converter overheating can occur. Maintenance / ServiceInspect during tune-up or every 25'000 - 30'000 miles. Look for misrouted, collapsed, cracked or clogged vacuum lines or corroded terminals or broken wires.
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