It signals the computer to reduce the ignition timing.
It is in front of the starter on my van.1990 350
no
What year, and application? NEW ANSWER: That would be the knock sensor,
oil pressure switch or knock sensor
In place of the coolant drain plug on either side of the block.
location of knock sensor in 1997 cheverolet Tahoe SUV 305 or 350 engine
Location of knock sensor 1991 GM sierra 350 2500?
yes
Make SURE the engine is COLD. Then unscrew the old sensor and install the new one. Antifreeze will leak out of the engine so be quit when replacing it.
It is screewed into the side of the engine block just in front of the starter. It will have an electric wire pluged into it. It is round in shape.
NO.
Yes.