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84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

22re Knock Sensor

Old 03-16-2019, 03:56 AM
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22re Knock Sensor

85 PU 22re: Check engine light comes on at 2k rpm. Pulled code 12... knock sensor needs to be replaced. My question is, does the sensor thread through the block into the oil jacket? or does it thread only part way into the block? I am wondering if I need to drain my oil first to replace it.

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Old 03-18-2019, 03:04 PM
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No need to drain the oil. I would first pull the sensor and make sure the threads are nice and clean on both the sensor and the block. I had the same symptoms, took a battery terminal brush to all the threads re-installed and it hasn't come back.
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