Jump to content
SAU Community

R34 Gt Ignition Problem

durty 4

By durty 4,
in Engines & Forced Induction

 Share

Recommended Posts

durty 4 Rookie

durty 4

Posted
Posted

Hey all,

New to the forum but have been a long time lurker.

Have been faced with a strange problem on my 1999 R34 GT. Sometimes when ive been starting the car the MIL (engine check light) comes on and the car tends to shake a bit more than normal, noticing this i realised that it runs on 5 cylinders instead of 6 when it lights up. :)

However the light will only light up once or twice a week and the car runs fine (all 6 cylinders working) whenever I happen to start the car and the light does not show up.

I managed to get the ECU scanned recently when it lit up and the error code 21: Ignition Signal Circut came up.

Is it likely that this is due to a faulty coilpack or related to the crank angle sensor?

Has anyone else had a problem similar to this?

cheers

matt

Link to comment
https://www.sau.com.au/forums/topic/292294-r34-gt-ignition-problem/
Share on other sites
666DAN Grand Master

666DAN

Posted
Posted

Most common R34 problem in the world, replace the coil packs as they all die eventually and you'll be running on less and less cylinders until it won't go.

I don't know of a single R34 that has not had this issue.

James Kelsey Newbie

James Kelsey

Posted
Posted

Just a word on this: I went a cheapo route and just bought one new Nissan coilpack before I learned about those coilpacks and regretted it. I ended up having to go back and buy a full set of 6 Splitfires. Haven't had a problem since... and now I'm having the same problem on the "new" 25GTt I just bought - need to go tomorrow and buy another set. :cry:

skylinelova07 Contributor

skylinelova07

Posted
Posted

Hey matt, I had this problem when I was helping my brother switch engines in his Datsun 1600. We were running on 3 cylinders instead of four. This was due to both electrical problems but we also found out that we had a couple of vacuum leaks which of course does not allow enough pressure for the pistons to work properly. However, from the sounds of things, it seems that your problem may be electrical (coils).

Good Luck with it.

Luke.

R34 -_- Community Regular

R34 -_-

Posted
Posted

iv replaced all my coils about 8,000ks ago and now im getting a missfire in the low rev range while cruising, but the check light DOESN'T come on like it did with the faulty coils. spark plugs maybe?

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Murray_Calavera
      R33 GTR running -9 with no tune

      By Murray_Calavera · Posted

      I don't understand how this hasn't boiled down to - Upgrade the turbo when you have everything required. ECU, injectors, fuel pump, turbo, etc. Do it all at once.  If you don't have everything required, just enjoy the car as it is and keep saving up your pennies. 
    • Duncan
      R33 GTR running -9 with no tune

      By Duncan · Posted

      Sounds like you've got an interesting adventure ahead here with local support if you have trouble! My guess is that, unboosted, you will be OK with a small upgrade like -9. What will happen is that once the stock ECU sees more airflow than it expects it will add a heap of fuel and pull a heap of timing to be safe because it can't understand how it could get that much air without there being an issue. You will see clouds of black smoke and it won't pull hard through the midrange and top end. So, overall it will be a bit frustrating but should be OK. If you are still nervous set the base timing back 2o through the CAS, but it will be even more sluggish everywhere. As said above through...this is not my guarantee your engine won't be blown into a million pieces, leaving you looking for very hard to find parts A better idea is get a computer with logging ASAP, wire in a wide band O2 sensor and a use remote tuner. I've done multiple cars this way and while it is not as good as a specific tune on a dyno they can get it 90% right. I'd suggest if you can afford an R33 GTR these days you can afford an ECU and tune. And if you can't afford that you sure won't be able to afford the rebuild if it goes bad in the meantime,.  
    • Duncan
      New kid on the block

      By Duncan · Posted

      Yeah it would be nice if someone took the time to put that sort of information together, but there are a lot of variations in looms. I think you are making this way hard for yourself if you just want to get it running....sourcing an SR20 with the right wiring will be a billion times easier than matching the RB loom to an S15 chassis. If you do end up going this way, you just need to trace every wire in the loom with a multimeter, 95% of them will go to a location you can confirm at the ECU.....and then post it up for the next person who needs it  
    • Duncan
      Coolant leak?

      By Duncan · Posted

      Just top it up with water, and keep a general idea of how much you added. It is normal for water to be pushed into and pulled out of the reservoir through the cap, and it should not be more than half full or it will be likely to overflow when hot. Any decent mechanic can do a pressure test of the cooling system to confirm if you have a leak. Keep in mind if it is only leaking a little and when hot it may well evaporate before you see it hit the ground
    • GTSBoy
      Coolant leak?

      By GTSBoy · Posted

      I'd ask the shop what they used and use that. Mixing coolants is sometimes OK, sometimes not, and you have know the details of each coolant to know whether it's a good idea or not.
×
×
  • Create New...