Dnk Posted May 16, 2010 Share Posted May 16, 2010 (edited) On the way to Japfest i appear to have a 2nd turbo boost problem, under hard acceleration the car would reach around 5000 rpm then felt like it hit fuel cut, red warning triangle came on then as i backed off the throttle the triangle went out. Had a look at the show and thought i'd found the problem with a loose hose so i fixed that and tried it out on the way back. Did a few hard pulls past 5k and no problem so thought i'd fixed it but then i did one more and at 6k + the same again, felt like fuel cut and red triangle lit up and went out as i backed off. Any ideas anyone, ive checked all the hoses and connections and all seems good, other than this the cars running spot on. bpu'd uk spec auto Thor FCD Blitz BC 1.25 bar de catted cheers Edited May 16, 2010 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
richarde7927 Posted May 16, 2010 Share Posted May 16, 2010 Its it over boosting dunk , i had the same on mine a few weeks ago a pipe had come off from the boost controller , its went up to 1.8 bar and i got fuel cut, backed off straight way , then no boost ( turn out to have blow the intercooler pipe off ) . Rich. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 16, 2010 Author Share Posted May 16, 2010 Im not sure its that as i have a thor fcd and wouldnt the car hit fuel cut all the time and at the same rpm if it was ? Quote Link to comment Share on other sites More sharing options...
richarde7927 Posted May 16, 2010 Share Posted May 16, 2010 Have you got a boost gauge in or away of seeing what boost you are running , if you were to bring the rev's up say on half throttle and then hard throttle you may have got the rev's abit higher before you get over boost then fuel cut . you know what its like its hard sometimes to put your finger on something with out seeing the car , im sure it will just be something simple like a pipe off for split somewere ,there are so many of them . The only thing is that i did not have my red warning triangle on . i throught that was only on ,when the doors was open ,or the handbrake is on ,or the brake fluid is low . If there are other reason for this light to be on it may point you in the right direction . Rich. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 17, 2010 Author Share Posted May 17, 2010 (edited) The only boost gauge is on the Blitz controller, i guess i'll have another look around the hoses etc and if nothing obvious i'll have to book it in somewhere and get it on a rolling rd to find the cause. I shouldnt get any fuel cut should i if the FCD is working correctly ? Thanks for your help Rich If anyone else has any ideas it would be nice to hear them Edited May 17, 2010 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Kev.O Posted May 17, 2010 Share Posted May 17, 2010 You should've said Dunk, I could've had a nose for you. Was it the same issue as when we went to Modified Live? Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 17, 2010 Share Posted May 17, 2010 Check for fault codes mate. Especially with the triangle coming on. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 17, 2010 Author Share Posted May 17, 2010 Check for fault codes mate. Especially with the triangle coming on. I'll be doing that tomorrow morning Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 17, 2010 Share Posted May 17, 2010 If you lower the boost controller down to say 1.1, does it still do it? Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 17, 2010 Author Share Posted May 17, 2010 You should've said Dunk, I could've had a nose for you. Was it the same issue as when we went to Modified Live? I dont recall Kev, i thought i'd found the problem at Japfest as a hose was loose but when checking it out on route home it did the same, this was at much higher rpm though and when i got to Martins the hose was on so that ruled that out. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 17, 2010 Author Share Posted May 17, 2010 If you lower the boost controller down to say 1.1, does it still do it? I didn't try that but will look into it tomorrow Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 17, 2010 Share Posted May 17, 2010 I'm not knowledgable on FCD's as my car has a mines ECU with built in fuel cut. But as far as I know, FCD's are adjustable. Your FCD might be set to exactly the limit of your peak boost, so a slight spike will hit fuel cut. lowering the boost slightly will tell you straight away if it stops doing it, that it's hitting fuel cut, and you might want to adjust the FCD up a bit. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 17, 2010 Author Share Posted May 17, 2010 I'm not knowledgable on FCD's as my car has a mines ECU with built in fuel cut. But as far as I know, FCD's are adjustable. Your FCD might be set to exactly the limit of your peak boost, so a slight spike will hit fuel cut. lowering the boost slightly will tell you straight away if it stops doing it, that it's hitting fuel cut, and you might want to adjust the FCD up a bit. Mine is the TRL FCD made by Thor, i didnt realise they were adjustable but will definetly drop the boost on the controller and see what happens. I guess i'll be fine doing this in a lower gear to keep the speed down seeing as ive not got access to a rolling rd or a race track ? Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 17, 2010 Share Posted May 17, 2010 if you can get it to do the problem when the boost reaches a set level in any gear, then you should be ok. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 18, 2010 Author Share Posted May 18, 2010 (edited) Checked for any fault codes and code 34 flashed up which is Turbo pressure malfunction. Edited June 28, 2010 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Dnk Posted June 28, 2010 Author Share Posted June 28, 2010 Not sure where im at now, im only reading 0.6 bar approx on the boost controller, feels like i've got an NA:( Can't find anything so its off to Thor on monday and hopefully Pete will be able to check the code 34 faults out for me. Quote Link to comment Share on other sites More sharing options...
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