justinm Posted March 26, 2008 Share Posted March 26, 2008 hey guys i have just reciently had my r32 gtst fully tunned and all was good it is on 15psi not to high and it was a safe tune and all of a sudden the car wont rev over 2.5 grand.....i have checked everything that i can but i was just wondering what you guy think it could be. btw the computer is a haltec v6..... i know i'll it to the tuners but i just want some oppionions of what it can be before i go spending money i dont have. any help would be greatly appreciated. Cheers Justin Murphy Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/ Share on other sites More sharing options...
700HP-GTR33 Posted March 26, 2008 Share Posted March 26, 2008 hows your fuel pump...making any noise? how does it feel like jerking at 2500 or pulling back when you hit it? My guess would be fuel pump first, sparks second then injectors and AFM third. Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3747847 Share on other sites More sharing options...
infamous_t Posted March 26, 2008 Share Posted March 26, 2008 Running without afms? check you haven't blown a hose/hoseclamp off intake piping. Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3747859 Share on other sites More sharing options...
justinm Posted March 26, 2008 Author Share Posted March 26, 2008 its jerking when i hit 2500 Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3749044 Share on other sites More sharing options...
blind_elk Posted March 26, 2008 Share Posted March 26, 2008 Have you checked the programmable rev limiter in the Haltech? Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3749077 Share on other sites More sharing options...
SevenAngryPenguins Posted March 26, 2008 Share Posted March 26, 2008 its jerking when i hit 2500 +1 for checking cooler piping i had same problem about 2500rpm and 4 psi boost, does it rev up fine in neutral? Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3749107 Share on other sites More sharing options...
justinm Posted March 27, 2008 Author Share Posted March 27, 2008 i dont have a controlller for the haltech how else can i check it? i have checked all plugs and piping. when its in neutural i revs fine up to 2500 and then does the same when in gear.....like......bahh....bahh.....bahh with like a half second intervals. Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3749530 Share on other sites More sharing options...
blind_elk Posted March 27, 2008 Share Posted March 27, 2008 i dont have a controlller for the haltech how else can i check it?Then how did they tune it?i have checked all plugs and piping. when its in neutural i revs fine up to 2500 and then does the same when in gear.....like......bahh....bahh.....bahh with like a half second intervals.Sounds awfully like a rev limit being hit. Take it back to the tuner and ask him to fix. Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3750240 Share on other sites More sharing options...
zertek Posted March 27, 2008 Share Posted March 27, 2008 +1 for a rev limiter. your car is manual right??? Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3750362 Share on other sites More sharing options...
justinm Posted March 28, 2008 Author Share Posted March 28, 2008 yeah its man i am taking it to my tuner next week but i dont really have the money to spend on it.....thats y i wanted to know if it was something i could fix. Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3753102 Share on other sites More sharing options...
GeeTR Posted March 28, 2008 Share Posted March 28, 2008 btw the computer is a haltec v6..... i dont have a controlller for the haltech how else can i check it? Iv never heard of a V6... but the Haltech's I've seen just need to be hooked up to a serial port on your laptop. If its a HARD cut, then it could be the Haltech freakin out, due to a faulty sensor etc. This will be pretty obvious if you hook a PC up to it with Haltuner installed and in Online mode. GL Link to comment https://www.sau.com.au/forums/topic/212068-engine-ecu-problem/#findComment-3753281 Share on other sites More sharing options...
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