Knock sensors are common, but you wont have any problems from it. Verify good spark plugs and wires, cap and rotor. It may be time for a pro to check it and not waste money guessing.
SOURCE: 2001 Xterra - Replaced fuel pump twice and is still not running.
I am no expert, but I just had a similar problem. The car would shake and buck when accelerating. It finally just died and would not start. After sitting for some time, the car would start and run a while, then do the same thing. I thought fuel pump. The dealer diagnosed distributor. After replacing, the car is running perfect. Something to think about. Good luck.
SOURCE: 2004 Nissan Xterra 75,000 miles
I had the same problem recently, but gave me 2 codes knock sensor (which will not activate the service light as i found around)
and gave me the air flow mass sensor. took it out clean it,
change the air filter,with a good one, vacum the inside of the filter holder and light went of about 2 days later.
SOURCE: on my 2004 xterra, the compressor operates, but
The engine drive belt operates the AC compressor. The OUTER pulley on the compressor , where the belt is, is always turning when the engine is running. When the AC is turned on, a CLUTCH on the compressor is engaged and connects the outer pulley to the compressor shaft. So, when the compressor is actually working, the outer pulley AND the inner ring just behind the outer pulley are both turning. When the AC is off (or not working correctly, as in your case), only the outer pulley turns.
It sounds like there is a major leak somewhere in the system. If you want to try and to find the leak yourself, there is a product in auto parts stores that is made for this. It is a canister, like the refrigerant used to charge the system, that will blow out a dye in the system, where the leak is. This can help you identify where the leak is ....If this info was helpful, please post... Thanks...
SOURCE: Knock sensor in 2002 xterra se/sc
ok if it is getting spark at spark plugs that rules out ignition, let go to fuel, needs to check fuel pressure and also injector pulsation, if no pulsation fuel will not get into cylinder's, also a knock sensor will not keep an engine from starting, it controls ignition timing once engine is running.
SOURCE: Diagram available for 01 Nissan Xterra Knock Sensor location?
V6 3.3L The sensor is located underneath the air intake manifold on top
of the engine block. This should take an experienced mechanic about 3-4
hours to replace.
Fig. Engine compartment component locations
Hope this help (remember rated this free help) Good luck.
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Thanks for the info Joel but its not a leak in the AC system. When I purged the system to change the compressor it already had the dye in it and it looked like I just massacred the predator. Lol I didn't find any dye anywhere and after some research the knock sensor seems to be the culprit. How can I test the sensor to see if its a faulty connection or if its the sensor itself?
Well I believe I have found the problem. 2000-2003 xterra's have a recall on the sending unit do to cracking resulting in corrosion of the connectors on the top of it. Mine is doing just that on the connector to the fuel pump. So I'm contacting Nissan to see if they'll replace it under recall. Thank you guys for your input and help. And I hope this helps anyone else. Word to the wise Google the other recalls they are very important to check!
Well I believe I have found the problem. 2000-2003 xterra's have a recall on the sending unit do to cracking resulting in corrosion of the connectors on the top of it. Mine is doing just that on the connector to the fuel pump. So I'm contacting Nissan to see if they'll replace it under recall. Thank you guys for your input and help. And I hope this helps anyone else. Word to the wise Google the other recalls they are very important to check!
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