Where is egr temp. sensor?

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Nissan noobness 1, me 0. 1994 hardbody throwing a code for egr temp. sensor. I found the electrical connector but nothing is plugged in. I know the engine has been swapped so there is probably a bolt where the sensor should be. You know, the same way the bulb was removed from the service engine soon slot. Failed emissions big time, nox way too high. I have the new sensor just dont know where to screw it in at.

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I found it. I was right about a bolt being in the spot. There was so much carbon under the bolt I thought it was metal, but after tapping it out the sensor screwed right in.