Question about 2001 Nissan Altima

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  • deno1962 Mar 07, 2009

    1997 Altima also have the same issue code P0325 fuel pump works and changed ignition module no spark at plugs cranks but will not start?

  • Mike Butler
    Mike Butler May 11, 2010

    Who suggested that and why, did you have it checked for trouble codes or something?



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  • Nissan Master
  • 726 Answers

No, knock sensor will not cause NO start condition. You have a different problem.

Posted on Feb 08, 2009


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Does a 99 lincoln have a knock sensor?

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Car doesn't start after replacing both knock sensors

The car should start without the knock sensors, why would you change the knock sensors? They are a piezo quartz generator that rarely go bad. Usually other symptoms of engine faults produce a code that say there is a knock sensor problem. Back to the no start thing, maybe you may have caused a unrelated problem. Bad reconnection or something. Retract your steps to see if you did something wrong

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1 Answer

My car pulled p0328 code what does that mean

thanks, that helps. It could be that is the only problem. The knock sensors started being installed several years back to provide performance feed back to the ECM/PCM. If a cylinder doesn't fire the knock sensor reports a misfire to the computer and a misfire code is shown. In this event the sensor is returning a value that indicated to the computer it was not functioning correctly. Replacement of this sensor doesn't require the motor to be rebuilt should cost around $200 at a dealer maybe a little more. You can view the knock sensor a little like the O2 sensor with the main difference being that if the knock sensor doesn't work correctly it could cause the vehicle to computer to adjust your timing the wrong way.

Jul 20, 2010 | 2008 Chevrolet Cobalt

1 Answer

DIY replace knock sensor?

before you start taking stuff apart, make sure that the knock sensor is bad and not the wires. test for ground and continuity on the signal wire from the sensor connector to the pin on the pcm connector. google "testing knock sensor" for more info

Mar 23, 2010 | 2000 Subaru Outback

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Knock sensor replacement ....2003 kia rio....emissions ...obd II....failure...need to pass inspection...failure code P0325 (Knock sensor 1 circuit malfunction)....where vis the knock sensor located on a...

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3 Answers

Knock sensor needs replacement. Is this a DIY, or do I need a mechanic?

To replace it is very very hard due to its location. BUT... it is quite simple to take care of if you understand what a knock sensor is. It is just a sound detector. It listens to the engine and if it hears detonation, then it signals. So you need a sensor that works, but if it hears nothing who cares?
Thus, fixing the problem (you have a code) is easy. Buy a new knock sensor. Mount it to the body of the car anywhere that is grounded. Like the sheet metal above the engine manifold. Now reroute the wires that run to the old sensor to this new sensor. Leave the old sensor (now disconnected) where it is. You will need to get the manual (ebay) to locate the wires. Oh - the white wires turn yellow with time. That yellow wire is white.
The new sensor operates perfectly, but it never hears anything. Problem solved.
F&*K-off you guys at the DMV and the EPA!

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1 Answer

High RPMs

yes its related to knock sensor because car is running rich in fuel, and car runs of on safe mode, so overdrive will be off. have you and a friend replace it. remove intake assembly, then intake manifold, but first remove your anifreeze from radiator, trust me you want to remove antifreeze! their are brackets by the fire wall to hold down the manifold, thats the hard part is taking it off and putting that on since not to much space to work on it. on the block you'll see the two knock sensors, has 2 wires each, knock sensors cost between 150- 200 a piece, still cheaper than dealership putting it on. also buy some liquid gasket because you will need that. after putting it all back together reset the ecu and you should be fine,

Feb 19, 2009 | 2001 Lexus RX 300

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