S14 knock sensor help please - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jperez311 · 05-21-2012, 03:02 PM

nissan 96 knock sensor - Product Details

Does anyone trust this. I'm low on money right now but I have to buy other stuff will this do the job at least for a good year? I need to figure out whats causing me to loose the gas that I'm loosing. I'm planning on changing plugs and oil the same time as the knock sensor.

So does anyone think it's a good idea to buy this???

gtd2000 · 05-21-2012, 10:58 PM

I bought a new knock sensor on eBay last year for a very low price or around $12 with shipping.

Did the job fine - didn't look any different to the one that it replaced to be honest.

If you are strapped for cash just get this one:

NISSAN KA24DE 2.4L SR20DE 2.0L VQ30DE 3.0L Knock Sensor US $7.79 FREE - Standard Shipping

It's not too bad to change as long as you have a wobble bar extension set - you can get cheap Chinese sets at Harbor Freight if you need some.

When you say lose gas do you mean you have a leak or it's just disappearing?

If you have a leak check the tank around the area of the support strap on the passenger side - they have a known defect where they crack. Big job to change unfortunately, as I've just gone through the very same problem

gtd2000 · 05-21-2012, 11:03 PM

NeverMindDoublePost

jperez311 · 05-21-2012, 11:40 PM

Thanks very informative.

I bought the 20 dollar one already. It should last me atleast te year.

The thing with my gas, I have no idea. To tell you the truth, I noticed my fuel go away faster when I installed my 2 10in sub (I'm not claiming its my sub) but I would take my sub out every few days, then my gas was normal. It's odd I thought maybe the added weight caused the drop in gas.

So I chose to run one 10 sub to reduce the weight of the box and extra sub.
The gas was a little better but still loosing gas faster than without.

Next I got an exhaust, stock piping size, but with a megan muffler. Gas dropped a lot. Now at this point I'm thinking it was the exhaust. But I thought exhaust would help gas.

Next I tune my sub for more power. Gas goes down some more.

The point I'm getting across is why is my gas going away so fast. My car feels fine when I drive. I shift before 2k going almost slower the speedlimit.

I have codes p1445 and p0325 and I had them for a year withought fixing them.

Has anyone had this experience. At all.

I got my car bone stock a year ago and I use to push it hard, and I still saved more gass than I do now driving slower than speed limit.

I only have an exhaust and a k&n drop in air filter.

I can check for a tank leak but I don't see gas on the floor when I park (unless I leaks while driving)

gtd2000 · 05-22-2012, 11:44 AM

P0325 = KNOCK SENSOR
P1445 = Purge volume control valve circuit.

On my car, I experienced high gas consumption when the O2 sensor gave up a few years back.

I can't see that your subs would be causing a significant rise in fuel consumption unless they weigh like a ton each...

Found this over at Nico:

Quote:

Got a solution for you. The purge volume control valve is a pain to remove and replace. Leave the old one in and splice in one from a 96 to 98 Altima. The connectors are different. You could either chop off the connector from the engine harness and wire up the Altima connector, or keep the original harness connector and splice the old valve connector to the new valve. The 98 Altima purge valve is easy to obtain as it sits on top of the motor. I just traced back the harness to give myself a little extra wire to work with, I took the valve, connectors, and the short bits of vacuum line. I capped the lines off and spliced in the valve. Polarity doesn't matter, so ... The connector is easy to find, but there isn't much slack in the harness to work with. This was the easiest fix I could come up with. Code's are gone. I had the IACV code, too. Now, I don't. Mileage improved.

jperez311 · 05-22-2012, 11:08 PM

So update

WITH MY SUB, I would drive FROM carson, all the way TO la mirada and BACK. I would estimate about 20% of my tank.

TODAY I take out my sub. I drove FROM Carson, To La Mirada, then TO Disneyland, BACK to La Mirada, then BACK to Carson allll under 20% of my tank.

Doesn't this sound odd??? It's definetly not the weight of the sub.
My thought it's that maybe my crappy battery I got from auto zone can't handle the amp and sub??? Maybe it sucked to much battery making my car run like SH!T?? Could the sub make the alternater work harder thus making the engine have drag, idk I'm still sorta lost.

Oh and thanks for the code help!

jr_ss · 05-23-2012, 05:42 AM

First off, your sub has nothing to do with the amount of fuel you're consuming. Have you done a tune up anytime or at all? Have you checked base timing and adjusted it back into factory spec? Changed fuel filters and check/changed plugs, air filter, oil?

Thinking that having boom boom in your trunk is increasing your fuel consumption, is a bit on the far fetched side.

jperez311 · 05-23-2012, 12:28 PM

Quote:

Originally Posted by jr_ss

First off, your sub has nothing to do with the amount of fuel you're consuming. Have you done a tune up anytime or at all? Have you checked base timing and adjusted it back into factory spec? Changed fuel filters and check/changed plugs, air filter, oil?

Thinking that having boom boom in your trunk is increasing your fuel consumption, is a bit on the far fetched side.

I changed my filter twice. I'm due for an oil change very soon. Fuel filter I haven't change that since I got the car last summer. Plugs didn't change, I'm doing that this weekend even tho last I checked they where fine. Knock sensor is coming in the mail this week and I got to fix the p1445 code.

gtd2000 · 05-23-2012, 03:05 PM

I'd certainly sort out the codes first, then see if that improves the mileage.

05-21-2012, 03:02 PM	#1
jperez311 Zilvia Member Join Date: Jun 2011 Location: Carson CA Age: 28 Posts: 277 Trader Rating: (0) Feedback Score: 0 reviews	S14 knock sensor help please nissan 96 knock sensor - Product Details Does anyone trust this. I'm low on money right now but I have to buy other stuff will this do the job at least for a good year? I need to figure out whats causing me to loose the gas that I'm loosing. I'm planning on changing plugs and oil the same time as the knock sensor. So does anyone think it's a good idea to buy this???

05-23-2012, 05:42 AM	#7
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,053 Trader Rating: (34) Feedback Score: 34 reviews	First off, your sub has nothing to do with the amount of fuel you're consuming. Have you done a tune up anytime or at all? Have you checked base timing and adjusted it back into factory spec? Changed fuel filters and check/changed plugs, air filter, oil? Thinking that having boom boom in your trunk is increasing your fuel consumption, is a bit on the far fetched side. __________________ My SR20VET

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05-21-2012, 10:58 PM	#2
gtd2000 Join Date: May 2011 Location: Sarasota, Florida Posts: 36 Trader Rating: (0) Feedback Score: 0 reviews	I bought a new knock sensor on eBay last year for a very low price or around $12 with shipping. Did the job fine - didn't look any different to the one that it replaced to be honest. If you are strapped for cash just get this one: NISSAN KA24DE 2.4L SR20DE 2.0L VQ30DE 3.0L Knock Sensor US $7.79 FREE - Standard Shipping It's not too bad to change as long as you have a wobble bar extension set - you can get cheap Chinese sets at Harbor Freight if you need some. When you say lose gas do you mean you have a leak or it's just disappearing? If you have a leak check the tank around the area of the support strap on the passenger side - they have a known defect where they crack. Big job to change unfortunately, as I've just gone through the very same problem

05-21-2012, 11:03 PM	#3
gtd2000 Join Date: May 2011 Location: Sarasota, Florida Posts: 36 Trader Rating: (0) Feedback Score: 0 reviews	NeverMindDoublePost

05-21-2012, 11:40 PM	#4
jperez311 Zilvia Member Join Date: Jun 2011 Location: Carson CA Age: 28 Posts: 277 Trader Rating: (0) Feedback Score: 0 reviews	Thanks very informative. I bought the 20 dollar one already. It should last me atleast te year. The thing with my gas, I have no idea. To tell you the truth, I noticed my fuel go away faster when I installed my 2 10in sub (I'm not claiming its my sub) but I would take my sub out every few days, then my gas was normal. It's odd I thought maybe the added weight caused the drop in gas. So I chose to run one 10 sub to reduce the weight of the box and extra sub. The gas was a little better but still loosing gas faster than without. Next I got an exhaust, stock piping size, but with a megan muffler. Gas dropped a lot. Now at this point I'm thinking it was the exhaust. But I thought exhaust would help gas. Next I tune my sub for more power. Gas goes down some more. The point I'm getting across is why is my gas going away so fast. My car feels fine when I drive. I shift before 2k going almost slower the speedlimit. I have codes p1445 and p0325 and I had them for a year withought fixing them. Has anyone had this experience. At all. I got my car bone stock a year ago and I use to push it hard, and I still saved more gass than I do now driving slower than speed limit. I only have an exhaust and a k&n drop in air filter. I can check for a tank leak but I don't see gas on the floor when I park (unless I leaks while driving)

05-22-2012, 11:08 PM	#6
jperez311 Zilvia Member Join Date: Jun 2011 Location: Carson CA Age: 28 Posts: 277 Trader Rating: (0) Feedback Score: 0 reviews	So update WITH MY SUB, I would drive FROM carson, all the way TO la mirada and BACK. I would estimate about 20% of my tank. TODAY I take out my sub. I drove FROM Carson, To La Mirada, then TO Disneyland, BACK to La Mirada, then BACK to Carson allll under 20% of my tank. Doesn't this sound odd??? It's definetly not the weight of the sub. My thought it's that maybe my crappy battery I got from auto zone can't handle the amp and sub??? Maybe it sucked to much battery making my car run like SH!T?? Could the sub make the alternater work harder thus making the engine have drag, idk I'm still sorta lost. Oh and thanks for the code help!

05-23-2012, 03:05 PM	#9
gtd2000 Join Date: May 2011 Location: Sarasota, Florida Posts: 36 Trader Rating: (0) Feedback Score: 0 reviews	I'd certainly sort out the codes first, then see if that improves the mileage.