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 MANUALSPONTIAC19876000 SAFARIREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEM2.0L VIN [K] / 2.5L VINS [R & U] TESTS W/CODESDIAGNOSTIC CHARTSCODE 25 - MAT SENSOR TEMPERATURE HIGH (A/J/N/P BODY)DIAGNOSTIC AIDS

1987 Pontiac 6000 Safari

Diagnostic Aids

1987 Pontiac 6000 SafariSECTION Diagnostic Aids

If the engine is allowed to cool overnight, the coolant and MAT sensors, when measured with a "Scan" tester, should read close to each other.

Fig 1: Code 25 Schematic: MAP Sensor Temp High (A/J/N/P Body)

G50D06659

RENDER: 1.0x

NO RELATED

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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.