Jump to content
SAU Community

Recommended Posts

Hey so i have googled and searched through the forums quite a bit and would still like a second opinion. For a while my 34 was having coil pack issues, one cylinder not firing occasionally and sounding like a truck/loss of power. The other day i was driving as per normal and all of a sudden under throttle i was losing all power and felt like MASSIVE drag so i pulled over. At this point it was idling fine and would rev through the rev range perfectly but once in first gear id take off normally and after about 2 meters it would have a huge power loss and drag. I managed to get the car home 2 meters at a time as i didn't want to leave it on the street (really bad area) and then had to reverse up my drive way as it was the only way i could get it up there ( too much power loss in first but not in reverse). I let it sit for a bit and now when i start it it starts perfectly and then dies straight out. If i giver it some throttle it is fine but is spitting out black soot and will stall once it hits idle.

After hours of research i came up with the either AFM was not working, vacuum leak or faulty idle switch. So i pulled it apart the AFM and re soldered it and still no good. My question remains is the AFM faulty or is the idle switch faulty? any ideas? :D

Kinda losing my mind haha

Link to comment
https://www.sau.com.au/forums/topic/462964-r34-gtt-wont-idle/
Share on other sites

So were 5 wet?

Was it running than you removed them so they could have gotten wet. Plugs that work will not be wet because they burn the fuel. If it was running rough than you pulled plugs than they could have a chance to get fuel on them on the cylinders that are not firing.

I had one stuffed coil pack and it made my car miss fire intermittently. One spark plug looked a little different in the fouling. Because it was only sometimes it had not changed the plugs appearance a lot. I changed all coil packs as my car has done 185000km and I just bought it so I don't know when they were last changed. Either they have done a great amount of KMs or they have been changed once before as they normally last about 100000km.

sorry for the late reply i have been away. All the other plugs looked perfectly fine as i replaced them maybe 4 months ago or so but one was black and dry none were wet. Just before i went away i found a rather big split in one of the main intake hoses and i have just replaced that but the battery is dead so i have to wait for it to charge to see if it changed anything. :)

So i started her up and she started fine and went to die. Gave a little bit of throttle and she settled on idle so i let her warm up for a bit. Revs through the rev range beautifully but now at idle she sounds like shes missing occasionally so i disconnected each coil pack one by one and it sounded worse every time so the coil packs arent the problem. This problem is unrelated btw it was doing this for a week or so before she died.

Went for a drive and she is pulling harder than she ever has been and my boost gauge was only hitting 7 psi instead of 10? Then i popped a hose that i must not have tightened properly but i lovely lady with a 200 sx came running out of her house with tools so could get it home haha

I know im just a little slow haha :)

I believe all my problems have gone away now after i fixed the boost leak and cleaned the IAC Valve. No weird idle and car has alot more power but kinda feels like it pulls back slightly once it hits boost. Thanks for the advice tho Hadouken was very helpful :)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to it's full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so damn hot in there, that made it all the more easy to remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. I was standing there looking at the car and said 'f**k it'. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Thanks for that, hadn’t used my brain enough to think about that. 
    • Also playing with fire if they start to flow more air down low than what the stock twins can. It's not even up top you need to worry, it can be at 3000rpm and part throttle and it's getting way more flow than it should.
    • Any G40/1000 or G40/1250 results out there?  
    • You still want a proper tune on the stock ECU though. Stock tune + stock ECU with GT-SS/-9s is probably playing with fire if you're running more than stock airflow/power.
×
×
  • Create New...