answersLogoWhite

0


Best Answer

The knocking sound that the sensor is designed to detect is caused by uneven combustion of a lower octane gasoline than the engine is able to burn efficiently. The knock sensor signals the Electronic Control Unit and ignition timing and other engine parameters are changed to eliminate the knocking. Knocking, if allowed to continue over a long time can seriously damage the engine. --Ken

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the purpose of a knock sensor on a 2001 Subaru Forester?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Where is the knock sensor on a Subaru Forester 1999?

Where is the knock sensor located on a 1999 Subaru Forester?


Where is the knock sensor on a 2001 Subaru Forester?

The knock sensor is located near the idle air control solenoid valve on a 2001 Subaru Forester. The knock sensor is responsible for sensing vibrations caused by engine knock.


What does the 2000 Subaru Forester knock sensor do?

If somebody knocks on the front door of the Subaru, the KNOCK sensor, sets off the KNOCK Alarm....LOL


What is p0325 engine code for a 1998 Subaru Forester?

Knock sensor/vibration sensor


Is there an online video for replacing Subaru Forester knock sensor?

Yes.


Will check engine light come on with a bad knock sensor on a 1998 Subaru Forester?

Not necessarily.


Why does a 1999 Subaru Forester hesitate under load?

Could be a bad knock sensor. The ECM may be retarding the timing based on bad input from a faulty knock sensor.


What is the purpose of a knock sensor in a 1998 Subaru Forester?

It will sense the engine pre-detonating fuel(usual cause is fuel octane level to low). ECU will adjust timing to prevent damage to engine.


How do you change a knock sensor on 1998 Subaru Outback?

that the knock sensor does


What does code P0328 mean for a 2002 Subaru Forester?

P0328 on an OBD11 equipped automobile (everything since 1996) is a knock sensor code. I believe that it says the reading is over the high limit. You should focus on the knock sensor and the wiring leading to it. --Ken


How do you replace the knock sensor on a 2000 Subaru Forester?

Couldn't be easier. Once you locate the knock sensor below and behind the intake manifold, it is held on with one screw through the middle and connected to the wiring harness by one plug. Finding it is the hard part. --Ken


Where is the knock sensor on a 2000 subaru forester?

The knock sensor is just behind the intake manifold on the top of the engine. It is a few inches below the manifold and all you will see is a bolt with what looks like a very thick washer on it with wires coming out of it. The knock sensor appearance has been described as a small donut. Easiest to see while leaning over the left front fender using a flashlight.