Jump to content
SAU Community

Recommended Posts

Hi Guys,

I was hoping you could give me some advice regarding my 1993 Nissan Skyline R33 GTS-T.

The problem I am having is quite difficult to explain. I'll be driving along normally with the throttle open and then all of a sudden the revs will drop and the engine will cut out. It's like the throttle just cuts out. I can have my foot flat to the floor and the revs just drop and the engine cuts out.

But, if I then turn the ignition off and restart the car, it will continue on driving normally until of course, it happens again!

This happens every trip I make in the car without fail. It generally happens after I go over a large bump, or when I change gears. It has also ocurred twice when I have activated my windscreen washers. It also tends to happen more often when the car is cold, or has been driven hard for the first time in the course of the trip.

It also has a tendency to happen when the car is at idle-albeit less frequently.

The car also has a tendency to hit flat spots and hesitate at high revs (above 4000).

I have had the car dyno-tuned twice and the plugs replaced in an attempt to solve the problem. The car also has a new clutch. But, the problem began to occur before the clutch was replaced. Other mods on the car include a turbo-timer, short shift gearbox and sports exhaust.

It has been suggested to me that it could either be an airflow problem, or, a problem with the ignition regulator/modulator, but, the mechanic I have been taking the car to has so far been unable to fix the problem. Obviously I am not too happy with this and was also hoping you could recommend a reputable mechanic/workshop in Melbourne that specialises in or at least has a great deal of experience with R33 Skylines.

From my limited knowledge of cars, I feel it is probably an electrical fault or fuel injection problem, but, I really don't know. This problem is very frustrating and also very embarrassing when it happens in the middle of an intersection-not to mention dangerous.

Any advice you could offer me on this issue would be greatly appreciated.

Link to comment
https://www.sau.com.au/forums/topic/2922-r33-gts-t-skyline/
Share on other sites

Baby Zilla - 2 Things

1. Add your Location in your profile (We know you're in Melbourne Now!! LOL!)

2. I know a couple of places that will be able to fix your prob without ripping you off. Theres 3 Places I know of in Dandenong

and one near Knox area.

Let me know if I can be of service to you.

Sam

Link to comment
https://www.sau.com.au/forums/topic/2922-r33-gts-t-skyline/#findComment-51259
Share on other sites

Originally posted by OOHSAM

We had the same prob (TPS - Throttle Position Switch) with one of our ZX's, I was told that this only hapens in Auto Cars.

I dont think it have to do with gearbox... if something wrong with some sensor I think it would stuff up ur car no matter what gearbox you have.... n lucky my '93 R33 auto has been driving beautifully so far... zero mechanical problems....

Link to comment
https://www.sau.com.au/forums/topic/2922-r33-gts-t-skyline/#findComment-51487
Share on other sites

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

    • I think the concept is highlighting the various scenarios where thicker oil helps, and thicker oil potentially doesn't help and only generates heat and costs power, in turn for safety which isn't actually any safer (unless you're going real hot). If anything this does highlight why throwing Castrol 10w-60 for your track days is always a solid, safe bet. 
    • Jason should have shown a real viscosity vs temp chart. All the grades have very little viscosity difference at full operating temperature.
    • Oops... I meant to include the connector  view... BR/W - power from fuse L/W - motor negative to fan control amp (and off to HVAC pin19) OR/B - PWM signal (from HVAC pin20) B --  ground  
    • Yep, if you are applying filler it sounds like there is something wrong with the body lol. Safe to assume there is going to be a lot of sanding going on if your still applying fillers.  Picture a perfect bare metal panel, smooth as glass. You lay down your primer, it's perfect. (why are you going to sand it?) You lay down the colour and clear, it's perfect. No sanding at all took place and you've got a perfectly finished panel.  You won't be chasing your tail, sounds like you were prepping to start laying filler. If your happy with the body after the sanding, there is some bare metal exposed and some areas with primer, no issues at all, start laying the filler. You are safe to lay filler on bare metal or primer (of course check your technical data sheet as usual for what your filler is happy to adhere to).  This isn't a 100% correct statement. There is primer that is happy to adhere to smooth bare metal. There are fillers that are happy to adhere to smooth bare metal. Just make sure you're using the right materials for the job.  Typically if you are using filler, you would go primer, colour and clear. I've never seen any instances before where someone has laid colour over body filler (maybe this happens, but I haven't seen it before). So your plan sounds pretty normal to me. 
    • I don't think there's any way someone is push starting this car.. I honestly can barely move it, and moving it and steering it is just flat out not possible. I'm sure it is, but needs a bigger man than me. I have a refurbished starter now. The starter man was quite clear and consise showing me how nothing inside a starter really should contribute to slow cranking, and turned out that for the most part... my starter was entirely fine. Still, some of the wear items were replaced and luckily it didn't show any signs of getting too hot, being unfit for use, etc. Which is 'good'. I also noticed the starter definitely sounded different, which is a bit odd considering nothing should have really changed there.... Removed and refit, and we'll pretend one of the manifold bolts didn't fully tighten up and is only "pretty" tight. GM only wants 18ft/lb anyway. I also found a way to properly get my analog wideband reading very slightly leaner than the serial wideband. There's Greg related reasons for this. The serial output is the absolute source of truth, but it is a total asshole to actually stay connected and needs a laptop. The analog input does not, and works with standalone datalogging. Previously the analog input read slightly richer, but if I am aiming at 12.7 I do not want one of the widebands to be saying 12.7 when the source of truth is 13.0. Now the source of truth will be 12.65 and the Analog Wideband will read 12.7. So when I tune to 12.7 it'll be ever so slightly safer. While messing with all of this and idling extensively I can confirm my car seems to restart better while hot now. I did add an old Skyline battery cable between the head and the body though, though now I really realise I should have chosen the frame. Maybe that's a future job. The internet would have you believe that this is caused by bad grounds. In finding out where my grounds actually were I found out the engine bay battery post actually goes to the engine, as well as a seperate one (from the post) to the body of the car. So now there's a third one making the Grounding Triangle which is now a thing. I also from extensive idling have this graph. Temperature (°C) Voltage (V) 85 1.59 80 1.74 75 1.94 70 2.1 65 2.33 60 2.56 55 2.78 50 2.98 45 3.23 40 3.51 35 3.75 30 4.00   Plotted it looks like this. Which is actually... pretty linear? I have not actually put the formula into HPTuners. I will have to re-engage brain and/or re-engage the people who wanted more data to magically do it for me. Tune should be good for the 30th!
×
×
  • Create New...