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PROS14
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PostSubject: Need help to decipher codes...   November 5th 2007, 10:35 pm

sup everyone? if you're reading this, I hope that you can help me with this problem. i have been driving around for a while with my check engine light on. it has popped up with the same codes:

P0400 - EGR Flow Malfunction
P0325 - Knock Sensor
P0440 - Evap Emission
P0446 - Evap Emission

I already have an idea with the first one (cuz I was the one that cause that code to pop up) but the other ones I don't know. Can anyone help me correct this problem? I need to get this done as soon as possible because emissions is comin around soon and I haven't finished rebuilding my other engine yet. Thanks in advance for your help.
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lopez6558
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PostSubject: Re: Need help to decipher codes...   November 5th 2007, 11:17 pm

i had the knock sensor come up to it's located right under your intake manifold (s14) and it should cost about $60 on E-Bay.
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PostSubject: Re: Need help to decipher codes...   November 5th 2007, 11:28 pm

the code says to kill the president of the united states of america...

that'll fix your engine
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PROS14
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PostSubject: Re: Need help to decipher codes...   November 6th 2007, 9:25 am

must...killl...president......or just vote democratic in the 2008 elections. lol

but seriously, can anyone help me get rid of these codes? thanks lopez6558. i'll definitely try that out this weekend and see if it corrects that sensor problem.
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Xmax
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PostSubject: Re: Need help to decipher codes...   November 6th 2007, 11:14 am

http://autorepair.about.com/cs/troubleshooting/l/aa042603a_09.htm
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PROS14
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PostSubject: Re: Need help to decipher codes...   November 6th 2007, 2:26 pm

thanks for the link xmax. stupid emissions system...hopefully i can get that checked out before i go in for the test...
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PostSubject: Re: Need help to decipher codes...   November 6th 2007, 4:09 pm

getting a code from the knock sensor doesnt mean the sensor is bad. that goes for any sensor really.

test it before buying and replacing. all the light means is the knock sensor is reading (or not reading) something other than the regular operation.

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PostSubject: Re: Need help to decipher codes...   November 7th 2007, 9:15 am

how should i test the knock sensor? would i have to just clean it, clear the codes, and just see if the code shows up again?
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PostSubject: Re: Need help to decipher codes...   November 7th 2007, 9:56 am

disconnect the battery for 24hrs (one way to drop codes completely)

and then connect it all back and see if it throws the codes right off the bat again...

testing a knock sensor on its own is a no-go.....thats one of them choices to either replace or see if fixing the emissions components will take away the knock code.. afterall, if, the canister diaphram locks up it could throw a knock code as well..

im not 100% on emissions componetry, i take all the stuff out lol
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PostSubject: Re: Need help to decipher codes...   November 7th 2007, 10:47 am

lol i would like to take all that emission component crap out of my car. but because it's a 96, i can't do it....yet. are there a lot of emission components in a ka24de? if so , what are they and how would i be able to check and see if they are functioning properly?
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PostSubject: Re: Need help to decipher codes...   November 7th 2007, 3:08 pm

taba240 wrote:
disconnect the battery for 24hrs (one way to drop codes completely)

and then connect it all back and see if it throws the codes right off the bat again...

testing a knock sensor on its own is a no-go.....thats one of them choices to either replace or see if fixing the emissions components will take away the knock code.. afterall, if, the canister diaphram locks up it could throw a knock code as well..

im not 100% on emissions componetry, i take all the stuff out lol
something i see wrong with your statement is that it doesnt take 24hrs to clear a code. you can disconnect the battery and press the brake pedal a few times (kill what is still in the system). wait like 5 minutes and reconnect everything. thumb up

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PostSubject: Re: Need help to decipher codes...   November 7th 2007, 6:54 pm

Nachtmensch wrote:
getting a code from the knock sensor doesnt mean the sensor is bad. that goes for any sensor really.

test it before buying and replacing. all the light means is the knock sensor is reading (or not reading) something other than the regular operation.

i just replaceed it when the code came up cuz i didn't feel like replacing it later.

Thats just me though.
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PostSubject: Re: Need help to decipher codes...   November 8th 2007, 8:06 am

I'm wondering if you want to reset the PCM/ECU on a 96 240 is the same as reseting the PCM/ECU on a Maxima, if thats the case, then its not so hard as you think. You need to find your PCM underneath the dash. Turn the key to the ON position, don't start your car Look for a seal with a screw behind it. Break the seal, and turn the screw clock wise until it stops, DO NOT USE A LOT OF FORCE TO TURN IT. Wait a few seconds, then turn it back. Your CEL will start blinking, thats just another way to get code of your PCM. Then turn the screw once more clockwise wait a at least two seconds again. Then turn back the screw to the starting position. Your PCM shoulc be reset by now.
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PostSubject: Re: Need help to decipher codes...   November 8th 2007, 11:50 am

lopez6558 wrote:
i just replaceed it when the code came up cuz i didn't feel like replacing it later.

Thats just me though.

actually, that's pretty reasonable. i was thinkin the same thing too. but i plan to do the test before i invest in the sensor.
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PostSubject: Re: Need help to decipher codes...   November 8th 2007, 10:07 pm

Nachtmensch wrote:

something i see wrong with your statement is that it doesnt take 24hrs to clear a code. you can disconnect the battery and press the brake pedal a few times (kill what is still in the system). wait like 5 minutes and reconnect everything. thumb up

for the s14 yes that is 100%

i tried it with my s13 and it wouldnt do it, many others have also tried too with nothing, getting to the ecu and workin the switch is also out of my "things i want to do list"

lol i read 240 and thought i could help...hahahah my bad beer

the FSM's state how to test emissions components one by one...it sounds a bit lude but it does involve some sucking and blowing to acheive proper results.....i read what exactly causes a knock code, i forgot to save it and now i cant remember where the hell i saw it...ill hunt it again though for sure see if i can find it
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PostSubject: Re: Need help to decipher codes...   November 9th 2007, 1:30 am

if you DO need a knock sensor its pretty generic Nissan part
check out the list of the cars it fits in this ad
http://cgi.ebay.com/ebaymotors/KNOCK-SENSOR-NISSAN-90-00-PATHFINDER-ALTIMA-XTERRA_W0QQcmdZViewItemQQhashZitem230189282958QQitemZ230189282958

new one from ebay is 45shipped
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PROS14
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PostSubject: Re: Need help to decipher codes...   November 9th 2007, 11:04 am

taba240 wrote:
the FSM's state how to test emissions components one by one...it sounds a bit lude but it does involve some sucking and blowing to acheive proper results.....i read what exactly causes a knock code, i forgot to save it and now i cant remember where the hell i saw it...ill hunt it again though for sure see if i can find it

coo, sounds good. i was in the middle of d/ling and printin out the entire FSM for future reference but couldn't find the website again. forgot how extensive those FSMs could be. let me know where you find the info about the emissions crap whenever you get the chance. thanks in advance.
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