Manifold Absolute Pressure Sensor for 1989 Pontiac Firebird - Walker 225-91026

Keep fuel and ignition-timing calculations accurate on your 1989 Pontiac Firebird with the Walker Products Manifold Absolute Pressure Sensor 225-91026, an OE-replacement MAP sensor built to drop into the listed application. A manifold absolute pressure (MAP) sensor measures the pressure inside the intake manifold through a changing voltage signal and reports that data to the onboard computer (ECM). The computer combines this reading with other inputs to calculate engine load and set the correct fuel injection and ignition timing, helping the ECM keep the air-fuel ratio dialed in.

• OE-replacement function: reads intake-manifold pressure and communicates it to the ECM for accurate fuel-delivery and timing calculations.
• Built for the engine bay: designed to withstand high engine-bay temperatures, vibration, and intake air contaminants.
• Tested output: checked for accuracy and responsiveness, and made to OE specifications for electrical output, pressure range, and connector fit.
• Straightforward installation: designed for easy replacement to minimize vehicle downtime.

If a failing MAP sensor is the cause of check-engine codes, rough idle, hesitation, or poor fuel economy, this OE-replacement unit replaces it and supplies the correct pressure signal to the computer. Diagnose the cause before replacing.

Interchange: 213-101
213101 · EC1678 · SU504DG · 16040749 · 849934 · AS210 · SU504

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