|Manifold Absolute Pressure Sensors|
What they do
Sense and signal the ECU, changes in atmostpheric pressure and / or engine vacuum so the computer can control the fuel and ignition operation for varying
Poor engine operation, black smoke, stalling, surging and catalytic converter overheating can occur.
Maintenance / Service
Inspect 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.