Running hot or timing too far advanced
it depends on what engine you have but most of them are a 5.4 or 4.6 or 4.2 and those have the knock sensors under the intake manifold on the passenger side.
As you are looking at your truck from the front the knock sensor shoud be on the passenger side right under the manifolds
If the knock sensor failed the CEL (Check Engine Light) would be illuminated and the engine may "ping" or "spark knock" under load. Serious "spark knock" can damage the engine if allowed to continue.
Check the module under the distributor cap.
It is screwed into the passenger side of the engine block between the starter and motor mount. You will have to get under the truck to be able to see it
You would probably hear a spark knock or pinging under acceleration or load. Check engine light may come on also.
on top of the block. on the left side under the intake manifold.
the Spark/Knock Sensor is under the intake manifold. Driver side. Approximately 5-7 hour job.
Knock Sensor On your 1992 Toyota Truck Previa 2WD (2.4L FI DOHC), the Knock Sensor is located: Front seating area, center, under engine cover, passenger side of engine, under intake manifold, mounted in engine block
under the lower intake manifold
If you slide up under the passenger side of the truck behind the front wheel and look up at the side of the engine You will see the starter, Just in front of the starter and screewed into the side of the engine block is the knock sensor. It will be round and have an electric wire pluged into it.
iF YOU SLIDE IN UNDER THE TRUCK BEHIND THE PASSENGER FRONT WHEEL AND LOOK UP AT THE BOTTOM SIDE OF THE ENGINE, YOU WILL SEE THE STARTER. NOW JUST IN FRONT OF THE STARTER A FEW INCHES YOU WILL SEE THE KNOCK SENOR SCREEWED INTO THE SIDE OF THE ENGINE BLOCK. iT CAN BE HARD TO SEE.