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There are two on the engine cooling system. One is kind of buried in behind the thermostat housing on the V6, it runs the fan. The other feeds the computer and the dash display and is threaded into the driver-side rear head. The 4 cylinder has the same sensors but I am unsure where it is.

There are technically 3 on the AC system. One is on the receiver tank in the spare tire compartment at the front and two emergency shut down sensors on the AC Compressor.

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10y ago
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Q: How many cooling sensors are on a 1986 Pontiac fiero?
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