Hi Haasman:

You need to take off the air cleaner and taking off the oil filter helps a lot because the sensor is right below the oil filter. If memory hasn't failed me yet, you will need a 5mm hex socket to take the sensor off.

Hope this helps.

Aloha,
Eric

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1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles