Harinder singh Posted August 26 Share Posted August 26 Hi SAU family, having issues with my R34GTT which is slightly modified and tuned to e85. so scenario is, I’m driving the car to work (30km oneway) and then coming back in the arvo. Car starts and runs fine in the morning and on the way back home (in the arvo). I stop the car when i gets home and after 10-15 mins, it wont start. Battery is fine, fuel pump seems to be working. All i hear is engine clicks but wont start. Last time, i disconnected the battery terminals and re connected them. Check fuses. Didnt start at that time but started after an hour (so I say when its cool down). Mechanic cant find the issue as its running now and nothing coming up in the diagnose. any advice,opinion or anyone gone through similar issue. thanks 🙏🏻 Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/ Share on other sites More sharing options...
Murray_Calavera Posted August 26 Share Posted August 26 11 minutes ago, Harinder singh said: All i hear is engine clicks but wont start Just checking, does the engine turn over and not start? or is it just a single click and doesn't turn over at all? Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003772 Share on other sites More sharing options...
Harinder singh Posted August 26 Author Share Posted August 26 Engine turning over but not starting. Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003773 Share on other sites More sharing options...
Murray_Calavera Posted August 27 Share Posted August 27 What ECU are you using? Sounds like an issue with the hot start mapping. Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003775 Share on other sites More sharing options...
GTSBoy Posted August 27 Share Posted August 27 6 minutes ago, Murray_Calavera said: Sounds like an issue with the hot start mapping. This. Assuming that the 2nd version (turns over) is the truth and not the first version (just clicks). Just clicks is, of course, an indicator of a starter solenoid not liking to work when hot. Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003776 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 Apologies, when i say engine clicks, means its turning over like its starting but doesnt and not clicks like when battery is dead. Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003778 Share on other sites More sharing options...
Murray_Calavera Posted August 27 Share Posted August 27 Seems like no one wants to answer my questions these days lol. 1 Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003779 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 Hey mate, i was just awaiting confirmation from my mechanic. I beleive we got Nistune installed Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003780 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 Yeah, stock r34 with a Nistune put on to it Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003781 Share on other sites More sharing options...
GTSBoy Posted August 27 Share Posted August 27 Injectors? Note, there is no way that I would run E85 on stock injectors. They are too small. Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003782 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 10 minutes ago, GTSBoy said: Injectors? Note, there is no way that I would run E85 on stock injectors. They are too small. injectors were upgraded (1000cc), stock turbo high flowed, return flow infercooler and ecu nistuned before tuned Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003783 Share on other sites More sharing options...
Murray_Calavera Posted August 27 Share Posted August 27 Who tuned it? Have you spoken to them about the hot start issue yet? Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003784 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 2 minutes ago, Murray_Calavera said: Who tuned it? Have you spoken to them about the hot start issue yet? Yeah, they all cant say anything for sure as everything is working fine . Said unable to find an issue untill it stops again. Could mist likely be CAS wiring or IAS valve issue but again not 100% Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003785 Share on other sites More sharing options...
Duncan Posted August 27 Share Posted August 27 Basically your tuner needs to drive it for the 30 min (or whatever) to create the same conditions then check the ECU settings and sensors at that time. They may not be excited to because that takes them 30 min rather than just opening the bonnet and seeing the problem straight away.... Hot start is generally not as tricky as cold start, but there would be a table for fuel enrichment vs coolant temp as a starting point Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003786 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 4 minutes ago, Duncan said: Basically your tuner needs to drive it for the 30 min (or whatever) to create the same conditions then check the ECU settings and sensors at that time. They may not be excited to because that takes them 30 min rather than just opening the bonnet and seeing the problem straight away.... Hot start is generally not as tricky as cold start, but there would be a table for fuel enrichment vs coolant temp as a starting point Yeah thats the next step now, either they wil or i will take out for a drive to work and go straight their after work and see is we get the same issues 🤞 thought i try my luck here too, never know someone else might have had the same issue but thanks for the reply Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003787 Share on other sites More sharing options...
Murray_Calavera Posted August 27 Share Posted August 27 18 minutes ago, Harinder singh said: thought i try my luck here too, never know someone else might have had the same issue but thanks for the reply Pretty safe to say almost everyone that has tuned their own car has experienced this issue. The difference being that we have our laptop in the car and when it happens, it's literally 10 seconds of tuning to sort it. Would you be happy to plug in your laptop and sort this yourself? It is a very simple process and there is no risk of harming your engine (if you are worried about that). 1 Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003788 Share on other sites More sharing options...
GTSBoy Posted August 27 Share Posted August 27 Resizing injectors in Nistune can be done a couple of ways, and there are a couple of ways that you can make a mess of it. The tuner needs to be really aware of the effects of whichever approach he uses (either K, or TIM). They are both easy enough to "get the injector size right" to run the engine. But little details like old start enrichment and hot start are affected differently, depending on which boxes you check. 1 Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003789 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 4 minutes ago, Murray_Calavera said: Pretty safe to say almost everyone that has tuned their own car has experienced this issue. The difference being that we have our laptop in the car and when it happens, it's literally 10 seconds of tuning to sort it. Would you be happy to plug in your laptop and sort this yourself? It is a very simple process and there is no risk of harming your engine (if you are worried about that). Yeah. M taking it to work next and then straight to my mechanic and see if it happens. Else i will check it mysels as it will stop when i come back home.. Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003790 Share on other sites More sharing options...
Murray_Calavera Posted August 27 Share Posted August 27 13 minutes ago, Harinder singh said: straight to my mechanic Did they tune the car? Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003791 Share on other sites More sharing options...
Harinder singh Posted August 27 Author Share Posted August 27 7 minutes ago, Murray_Calavera said: Did they tune the car? My mechanic installed all the parts and then got it tuned which i think is around the corner from him Link to comment https://www.sau.com.au/forums/topic/486480-engine-issue/#findComment-8003792 Share on other sites More sharing options...
Recommended Posts
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 accountSign in
Already have an account? Sign in here.
Sign In Now