Originally Posted by Ommateal Had codes done by a very nice scanner, It looks like since I changed the Mafs those have not shown back up, the Major codes I
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06-15-2017, 09:40 AM | #16 (permalink) | ||
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The pictures I've seen in the parts catalog from Nissan is that the strainer is a rectangular 'sock'. But they could be using a 'generic' picture.
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06-15-2017, 10:19 AM | #17 (permalink) | |
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06-15-2017, 03:45 PM | #18 (permalink) | |
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I did The full CPU reset relearn procedures - not really any improvement. Would any of this result in my symptoms of being driveable (but less power and a small stuter at 3krpm) Untill it gets hot and sputter/stalls (most common AFTER turning the car off for a few mins then trying to restart - usually fails to fully start till its cool again)
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Red 370z Sport 6m Mods: Stillen 25 row Race Oil cooler|FIXED ESCL|Muffler delete|TEIN Springs|Tint|Varrstoen ES2 Rims|NRG Stealth Knob|Kenwood touchscreen| Last edited by Ommateal; 06-15-2017 at 03:54 PM. |
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06-15-2017, 07:34 PM | #19 (permalink) |
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Yes once you take off all the bs to get to the fuel tank you'll see a white plastic piece. Just unscrew it and pull it out(this is the hat we're referring to it contains you fuel pump and some sensors). You will be able to see if it's broken, however since you said you haven't had any issues with your gas gauge I doubt it's the problem.
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06-15-2017, 07:42 PM | #20 (permalink) |
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I would first start with getting a fuel pressure gauge to be sure you don't have a fuel pump issue. The initial codes were MAF codes so if your fuel is good I'd go back to the MAF sensors. I know you said you replaced them with brand new but cheap ones, were these oem maf sensors you replaced them with?
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06-15-2017, 07:46 PM | #21 (permalink) | |
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06-19-2017, 11:56 AM | #22 (permalink) |
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Almost thought it was fixed after a pretty long drive - But nope lol. Did an oil change and threw some injector cleaner in it just for the hell of it. It is running slightly better, but The issues are present and just feel more random though less impactfull....so thats a good thing I guess haha.
I will try to see if I can find a cheap way to test the fuel pressure. So far all I'm seeing is a gauge thats 50bucks. For that price I can basically just buy a new Walbro Pump. Not sure what else to do other then take it to the dealer shop, and I'm deff not sure how I feel about my local nissan dealer... as far as skill level for problems with the car especially with it being out of warranty.
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07-02-2017, 04:06 PM | #23 (permalink) |
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Any ideas on a way to test fuel pressure without buying the 50$ tester? Or should I just say F it and buy a pump cuz its the same price basically O.o ?
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07-07-2017, 05:46 PM | #24 (permalink) |
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****Update****
Just got off the phone with the dealership - They said they think it's the Air fuel Sensor On the EXHAUST MANIFOLD, passenger side. Can anyone point me to exactly what part this is. Someone from the dealer read me this part number 226931na0a is this correct? This it in the pic and heres the one I might buy.
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Red 370z Sport 6m Mods: Stillen 25 row Race Oil cooler|FIXED ESCL|Muffler delete|TEIN Springs|Tint|Varrstoen ES2 Rims|NRG Stealth Knob|Kenwood touchscreen| Last edited by Ommateal; 07-07-2017 at 06:29 PM. |
07-11-2017, 09:30 AM | #25 (permalink) |
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****UPDATE#2****
Replaced the AF sensor Bank 1 with a Denso. Car is running much better but still not totally fixed. It's pulling harder and as of right now almost no stumble - still a small stumble seldom at 3.5k rpm but its mostly gone. After car is hot (200+ degrees) and turned off for a little bit apon restart it is still sputtering but not as bad. I can't keep nickle and dime parts into this car... -.- Any repair suggestions? Should I replace the driver side AF as well? Here is a pic of the recommended work from nissan - His tests ONLY showed Bank 1 issue af though recommends changing both banks.
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Red 370z Sport 6m Mods: Stillen 25 row Race Oil cooler|FIXED ESCL|Muffler delete|TEIN Springs|Tint|Varrstoen ES2 Rims|NRG Stealth Knob|Kenwood touchscreen| Last edited by Ommateal; 07-11-2017 at 10:42 AM. |
07-13-2017, 01:30 AM | #26 (permalink) | |
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Last edited by Z_ealot; 07-13-2017 at 03:08 AM. |
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07-18-2017, 11:55 AM | #27 (permalink) |
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****UPDATE#3****
Installed an oil cooler - can confirm it still has the same issues but now I can rule out that having 200+ degree oil temp has nothing to do with it. They said i'm running a constant 30psi, but isn't that TOO low? The fsm says 51psi @ idle. And WHo knows how long he tested or if he tested at load or during the issue. Issue with my Fuel pressure regulator maybe? Is there anyone in North East Ohio area that can truly figure out this issue... ugh. I'm going crazy.
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07-22-2017, 02:17 PM | #28 (permalink) |
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*** update # who cares...***
Nissan agreed that 30psi was too low and recommends replacing the fuel pressure regulator. ...can't seem to find them for sale anywhere. From dream car to nightmare.
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07-23-2017, 10:01 AM | #29 (permalink) | |
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https://www.z1motorsports.com/fuel-d...hr-p-9194.html Edit: looks like the fuel pressure regulator is built into the fuel pump assembly so i guess time for a new fuel pump? Last edited by Z_ealot; 07-23-2017 at 10:07 AM. |
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07-24-2017, 09:31 AM | #30 (permalink) | |
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