Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999METRO L4-079 1.3L VIN 2 MFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS - POWERTRAIN SYSTEMSIAT
1999 Chevrolet Metro L4-079 1.3L VIN 2 MFI
IAT
1999 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION IAT
Scan Tool Range -40°C to 120°C (-40°F to 250°F). The PCM displays the electrical resistance of the Intake Air Temperature sensor (IAT) as degrees. The PCM uses the IAT sensor in order to calculate incoming air density. The PCM uses air density information in order to adjust fuel delivery and ignition timing.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.