TOYOTA 90917-11036 MAP Sensor Gas Filter

The genuine Toyota 90917-11036 oil separator filter (gas filter / vacuum filter) is a premium OEM component that plays a vital role in the precise operation of the engine management system. This compact in-line filter is installed in the vacuum line between the intake manifold and the MAP (Manifold Absolute Pressure) sensor.

Operating Principle and Function

In modern internal combustion engines—particularly turbo-diesel powerplants—oil mist and soot can accumulate in the intake manifold due to crankcase ventilation and the EGR system. The purpose of this filter is to prevent these contaminants and moisture from entering the delicate measuring chamber of the MAP sensor, thereby protecting the sensor against failure and ensuring that accurate pressure signals are transmitted to the engine control unit (ECU).

Technical Specifications

• Manufacturer: TOYOTA (Genuine OEM part)
• Part Type: Oil separator filter / MAP sensor gas filter (FILTER, GAS)
• Housing Material: High temperature-, pressure-, and chemical-resistant plastic
• Filter Media: Specialized microfiber membrane that effectively separates oil vapor and solid particles
• Installation Position: In-line between the intake manifold and the MAP sensor

Symptoms of Wear and Clogging

Over time, the filter becomes saturated with oil and soot, restricting gas flow and leading to incorrect pressure readings. Typical symptoms of a clogged or failed filter include:

• Illuminated Check Engine light and diagnostic trouble codes (e.g., MAP sensor-related faults)
• Sluggish throttle response and loss of engine power (due to improper boost pressure regulation)
• Increased fuel consumption and elevated soot/exhaust emissions
• Rough idling or engine hesitation/stuttering under load

To maintain optimal engine performance and longevity, regular inspection and replacement of the filter as needed is strongly recommended.