turbo ute79 Member 376 Member For: 16y 5m 6d Gender: Male Location: gladstone qld Posted 17/05/10 08:34 AM Share Posted 17/05/10 08:34 AM have just had a run in tune on my ute it is a new motor with all the good gear. t51r turbo ported head and full plazmaman intercooler + plenum kit. car ran great on the dyno to run it in then when we went to drive it it would not rev up like it was missing real bad. we cleaned the fuel system out and drove it around for about 15 mins and it did it again. it seems that when you start it it is fine then it runs like crap all of a sudden. then you let it sit and it runs fine. has about 40-50 psi fuel pressure and oil pressure is also fine. injectors are my old 42 pound ones and the afrs are fine for a run in tune. I am a bit stuffed as to what is wrong. if anyone has any ideas even silly ones could you let me know. any suggestions to what is wrong would be good. it would be even better if someone has had this happen before Link to comment Share on other sites More sharing options...
Worm A much better forum Silver Donating Members 3,808 Member For: 16y 6m 11d Gender: Male Location: Victoria Posted 17/05/10 08:53 AM Share Posted 17/05/10 08:53 AM Coils? Plugs??? Link to comment Share on other sites More sharing options...
RHR BOOST Moderating Team 5,698 Member For: 21y 4m 28d Gender: Male Location: Southern Highlands NSW Posted 17/05/10 09:09 AM Share Posted 17/05/10 09:09 AM that's what id be looking at Link to comment Share on other sites More sharing options...
turbo ute79 Member 376 Member For: 16y 5m 6d Gender: Male Location: gladstone qld Posted 17/05/10 09:27 AM Author Share Posted 17/05/10 09:27 AM brand new coils and brand new plugs. engine runs fine then just wont rev up. ran it in on dyno not a problem. made 365 rwhp at 4500rpm at 7psi. then when we went to drive it it would not rev up. Link to comment Share on other sites More sharing options...
Worm A much better forum Silver Donating Members 3,808 Member For: 16y 6m 11d Gender: Male Location: Victoria Posted 17/05/10 07:59 PM Share Posted 17/05/10 07:59 PM Could still be a dodgy coil... Might be shagged from new??? Link to comment Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 2m 12d Gender: Male Location: SE Melbourne Posted 17/05/10 08:31 PM Share Posted 17/05/10 08:31 PM (edited) I dont understand how the tuner can't tell you what is wrong with it. He has the dyno right there. You say it runs fine on the dyno but not the road. Put it back on the dyno, load the tray up with 600kg of crap and punch it. See if you can replicate the issue. Its your best chance at troubleshooting it.Also, Im no dyno expert but I wonder if there is a way to adjust the dyno magnets to put more load on the car.Although this will probably stuff the tuning of the dyno Edited 17/05/10 08:32 PM by Paulie2256 Link to comment Share on other sites More sharing options...
SPIKO Gold Donating Members 1,924 Member For: 19y 9m 27d Gender: Male Posted 17/05/10 09:09 PM Share Posted 17/05/10 09:09 PM (edited) If it isn't the coils & plug's it sounds like a torque limit in the tune to me... Get someone to check the fault codes on your car buddy when it does this.. Auto or Manual? Edited 17/05/10 09:20 PM by SPIKO Link to comment Share on other sites More sharing options...
turbo ute79 Member 376 Member For: 16y 5m 6d Gender: Male Location: gladstone qld Posted 18/05/10 08:44 AM Author Share Posted 18/05/10 08:44 AM its manual spiro. I drove it and gave it a few squirts and it went fine on sat. we are gettin some more new coils and plugs tomorrow to try that. I know it will be some silly thing wrong with it it is just finding that silly thing at the moment. I have a sneaky suspicion that it is a fault code or something. I have head stories about people having trouble with the run in oil on cars with vcct but im not convinced about that. everyones opinion is appreaciated it could be the silliest little thing that someone will think of that could be it everyone Link to comment Share on other sites More sharing options...
SPIKO Gold Donating Members 1,924 Member For: 19y 9m 27d Gender: Male Posted 18/05/10 08:50 AM Share Posted 18/05/10 08:50 AM Let us know how you go and check the fault codes regardless.. Best of luck. Link to comment Share on other sites More sharing options...
turbo ute79 Member 376 Member For: 16y 5m 6d Gender: Male Location: gladstone qld Posted 18/05/10 09:05 AM Author Share Posted 18/05/10 09:05 AM thanks mate, gunna take my old coils in tomorrow and try them too. Link to comment Share on other sites More sharing options...
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