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Knock Sensor Problem Solved or Not ?


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I have 1999 Subaru Impreza Outback Sport AWD 190,000 miles 2.2lt...anywho..I had the CEL go off and the PCM at autozone read....Knock Sensor Malfunction in Bank 1....so I go ahead and purchase a new Knock Sensor...take the old one off and put the new one on.....AS soon as I started the car with the new one ...the Engine Missed and carried on, would not go at all...SO i took it off and cleaned the block with steel wool and put it back on....still the same...so i took the old one and cleaned it with steel wool and....it is running just fine....CEL Still on ..but no more missing and timing problems. ...So did I solve the problem or not....anyone have any suggestions?

 

Thanks

Jon

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You didn't say if there were any performance issues initially. Clear the code and see if it comes back?

I have 1999 Subaru Impreza Outback Sport AWD 190,000 miles 2.2lt...anywho..I had the CEL go off and the PCM at autozone read....Knock Sensor Malfunction in Bank 1....so I go ahead and purchase a new Knock Sensor...take the old one off and put the new one on.....AS soon as I started the car with the new one ...the Engine Missed and carried on, would not go at all...SO i took it off and cleaned the block with steel wool and put it back on....still the same...so i took the old one and cleaned it with steel wool and....it is running just fine....CEL Still on ..but no more missing and timing problems. ...So did I solve the problem or not....anyone have any suggestions?

 

Thanks

Jon

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Oh I did forget to mention that....there was issues before I bought the new part...If I was going up hill the light would come on and the car would shutter and then wouldn't go very fast. and then eventually it would go back to normal in a matter of minutes....really it didnt only do it on hills...it would do it pretty much anytime. so when the light came on i drove straight to autozone and had them read the computer. Also another question I have the keyless entry on this car...but the remote doesnt work..I thought it was the remote battery so I bought a new one....but no luck..now I know there is an overide programming button on the car below the steering wheel...but I believe someone has removied it from the car....because its missing...is there any way to replace that...or get the programming to work any other way?

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Sounds like your knock sensor might be a little too sensitive, or you have some engine condition causing a lot of knock. It also sounds like maybe the aftermarket knock sensor might not have matched OE specs completely. Could maybe try going up a hill with the knock sensor disconnected and see if it acts up. For the remote, you might just have to 'program' your vehicle to recognize that remote's code; check the manual.

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Ok, Well whatever was wrong with the knock sensor is now fixed, No problems so far. I am still wanting to get the keyless entry working...the only thing I can find in the manual is that I need to press the overide programming button...problem is that the button is not there? HELP?

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Ok, Well whatever was wrong with the knock sensor is now fixed, No problems so far. I am still wanting to get the keyless entry working...the only thing I can find in the manual is that I need to press the overide programming button...problem is that the button is not there? HELP?

Time for a new thread on Keyless entrys.....

 

I have a new Subaru 01-02 entry system (plug and play) due to arrive in the mail any day now. I'm looking to sell it...CHEAP! I purchased it just for the remotes.

 

Oh ya, I had the same "knock sensor bank 1 malfunction" code last week.

Cleared it and it has not reared it's ugly head again...so far...:rolleyes:

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I've had two cars now with bum knock sensors and neither had crappy driving on account of it. My car's was broke for ages and no issues and a friend with a 97 had her's completely cut from the ECU and the car didn't carry on. I definitely think there are deeper issues here - knock sensors aren't that effective on how the engine runs.

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I had a bad Knock Sensor once and the ECM pulled a lot of timing to save the engine. It lost a lot of power and the mileage went to heck.

 

It made a difference.

Well, the 97 did feel a bit underpowered, but it didn't carry on as this person describes.
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Well, the 97 did feel a bit underpowered, but it didn't carry on as this person describes.
The mileage went from 22 to 18. The power was down and I could notice. But my wife didn't notice any difference. You must press the gas pedal to be able to tell.
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