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Why does your engine knock when you step on the gas?
Probably a bad rod bearing
Does the engine knock with a bad knock sensor?
NO it will not. If you have a knocking sound then you have trouble inside of the engine.
Will a bad knock sensor prevent an engine from shifting?
A bad knock sensor would illuminate the check engine light and allow the engine to ping (spark knock). The engine doesn't shift, the transmission shifts.
Will it hurt engine to drive with bad knock sensor?
Yes it can hurt your engine to drive with a bad knock sensor. The knock sensor should be replaced as soon as possible.
Can bad knock sensors damage an engine?
NO, but it will cause bad engine performance
Will it improve performance much if you were to replace a bad knock sensor will it shorten your engine life?
a knock sensor will retard or advance ignition spark, improving gas mileage and will not shorten engine life , if any thing it will extend engine life.
Does the engine on a 2003 impala knock in the top of the motor if the knock sensor is bad?
The knock sensor just advances and retards the engine timing only. If there is a noise in the engine then you have engine are valve train problems. The knock sensor will not make the engine knock.
Does a knock sensor ECM error mean that sensor is bad or that the sensor is just reporting a knock in the engine?
The sensor is bad. A properly-functioning knock sensor allows the ECM to advance timing until it senses a knock. It then retards timing until the knock just barely goes away allowing for optimal gas mileage.
Would a bad torque converter cause the motor to knock?
No, it will not cause the engine to knock.
What does a car do when the knock sensor is bad?
The knock sensor retards the engine timing when there is a knock or ping detected. This will make the car a little sluggish. It is rare that the knock sensor goes bad.
Sign of knock sensor going bad?
the only sign is if it goes bad it should trigger the check engine light, you wont notice loss in peformance in engine. all it does is when there is a knock in a cylinder, from bad fuel, it leans back on fuel to stop the knock.
Will a bad knock sensor cause bad gas miledge?
YES, It sure can but I don't think you would notice it that much. It would help us to know the year,engine size and what you are working on.
