EA41-13-215
Measure intake air flow: It tracks how much air is being sucked into the engine (e.g., more air at high speeds, less at idle). This data tells the ECU exactly how much fuel to spray into the cylinders—creating the perfect “air-fuel mix” for combustion.
Optimize engine performance: With accurate air flow data, the ECU adjusts fuel delivery to match driving needs. This means better acceleration (when you press the gas, more air = more fuel = more power) and stable idle (no shaky engine when stopped).
Reduce fuel waste & emissions: The right air-fuel mix ensures almost all fuel burns completely—no unburned fuel wasted (lowers fuel consumption by 2–4%) and fewer harmful gases (like CO or hydrocarbons) released (meets emission standards).
Fits These: All Haima S7 variants (matches the engine’s intake system, ECU protocol, and air flow range—confirm with VIN).
Won’t Fit These:
Non-Haima vehicles: Even if the plug looks similar, ECU communication protocols differ (no functional match).
S7 with modified intake systems: Aftermarket cold air intakes or larger intake manifolds change air flow patterns—original sensor can’t read correctly (causes fuel mix issues).
Prep: Techs disconnect the S7’s battery (prevents electrical damage), then locate the sensor on the intake manifold (usually held by 2 small bolts).
Remove old sensor: They unplug the wiring connector, unscrew the old sensor, and wipe the intake manifold’s mounting surface (remove dust or oil).
Install new sensor: They place EA41-13-215 into the mounting spot, tighten bolts to Haima’s exact torque (too tight cracks the housing), then reconnect the wiring plug.
Test & calibrate: They reconnect the battery, use a diagnostic tool to sync the sensor with the ECU (critical for accurate readings), and test drive to check for smooth acceleration and no warning lights.
Keep it clean: Every 30,000km, have techs gently clean the sensor probe with specialized air sensor cleaner (avoid water or soap—damages electronics). Dust on the probe causes wrong readings.
Check wiring connections: During oil changes, ask to inspect the wiring plug—loose or corroded pins cause signal cuts (leads to rough engine running).
Watch for warning signs: If your S7 has weak acceleration, high fuel consumption, rough idle, or an engine warning light, the sensor may be faulty—get it checked immediately.
Avoid cheap cleaning products: Never use brake cleaner or alcohol on the sensor—they destroy the sensitive probe (needs full replacement).
Summary: Haima S7 Air Map Sensor (EA41-13-215)
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