tony tt Posted March 21, 2012 Share Posted March 21, 2012 I have a bpu auto tt and it idles at 300rpm when warm is this normal for an auto it idles that low it vibrates? I have got the ICV cleaned out and its still doing it could it be the 02 sensor thats causing it? I had a tt6 before and it sat at 900rpm on idle when warm which seemed fine. Any ideas Thanks. Quote Link to comment Share on other sites More sharing options...
Geo Posted March 21, 2012 Share Posted March 21, 2012 300rpm sounds too low mate, should be up alot higher than that, 800-900 like you said. You tried re-setting the ECU? Has the 02 sensors been changed? Quote Link to comment Share on other sites More sharing options...
tony tt Posted March 21, 2012 Author Share Posted March 21, 2012 ECU reset when i went bpu havent explored the 02 sensor as yet but ill look into that. Just wondered if anyone else had similar issues even after icv was cleaned out. Quote Link to comment Share on other sites More sharing options...
SPG Posted March 21, 2012 Share Posted March 21, 2012 Tony i had the same problem and i tried cleaning the ICV, my issue lay with a slowly dieing battery. Maybe give it a bit of juice over night and reconnect the battery to see if there is any change. Quote Link to comment Share on other sites More sharing options...
tony tt Posted March 21, 2012 Author Share Posted March 21, 2012 Tony i had the same problem and i tried cleaning the ICV, my issue lay with a slowly dieing battery. Maybe give it a bit of juice over night and reconnect the battery to see if there is any change. I'll try that mate but the battery is only a few months old. Quote Link to comment Share on other sites More sharing options...
SPG Posted March 21, 2012 Share Posted March 21, 2012 My battery was also brand new, but i did not realise that there was a drain on the system somewhere and it caused the new battery to lose its held charge. Does it want to almost cut out when stopping at traffic lights? Quote Link to comment Share on other sites More sharing options...
tony tt Posted March 21, 2012 Author Share Posted March 21, 2012 No bud it will sit at 300rpm all day if its left its very strange. Im getting a greddy emanage fitted soon hopefully once the fueling is adjusted and mapped it may sort the idle as i read somewhere it has the ability to do that. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted March 21, 2012 Share Posted March 21, 2012 My dad has a supra tt j-spec and it idle's at around 650-750rpm which i ashume is normal Quote Link to comment Share on other sites More sharing options...
tony tt Posted March 21, 2012 Author Share Posted March 21, 2012 I'd be happy with 650-750 but 300 is too low. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted March 21, 2012 Share Posted March 21, 2012 Yeah does seem kinda low - i bet it doesnt even sound like the engine is running Quote Link to comment Share on other sites More sharing options...
tony tt Posted April 3, 2012 Author Share Posted April 3, 2012 Right had the car out to the meet on Sunday and it this seems to be getting worse at one point it was idling at 100rpm and nearly cutting out. When im at a stop now i need to hold the revs at 900 just so it doesnt vibrate and squeek with it being so low. I'm stumped as to what it is the icv has been cleaned and the battery is fine. Anyone else had this or know what the potential problem could be?? Quote Link to comment Share on other sites More sharing options...
SPG Posted April 3, 2012 Share Posted April 3, 2012 Have you tried swapping out the ECU for another at all buddy? Quote Link to comment Share on other sites More sharing options...
tony tt Posted April 3, 2012 Author Share Posted April 3, 2012 Never thought of that no didnt think it be that to be honest. Possibly a new 02 sensor needed i really dont know bud it's pissing me off to say the least. Quote Link to comment Share on other sites More sharing options...
ashbuster Posted April 3, 2012 Share Posted April 3, 2012 I'd be happy with 650-750 but 300 is too low. mine idles at 600 when warm jap auto tt Quote Link to comment Share on other sites More sharing options...
Nic Posted April 3, 2012 Share Posted April 3, 2012 The TT should idle between 600-700rpm, the NA 650-750rpm. Did it just suddenly start idling low, was anything done to the car that might have triggered the problem? Have you checked the ECU for fault codes and checked the O2 sensor is working? If the battery is okay, you've cleaned the ICV and tried reseting the ECU, I'd next check the plugs, check/clean the air filter, check the vacuum hoses for leaks and clean/secure the battery terminals and ground points - note if you disconnect the battery it'll need a run out before it'll idle properly. Quote Link to comment Share on other sites More sharing options...
SPG Posted April 3, 2012 Share Posted April 3, 2012 If you need a Auto-TT ECU to test in your car then i could send you mine bud, just remember to send me my one back Quote Link to comment Share on other sites More sharing options...
tony tt Posted April 3, 2012 Author Share Posted April 3, 2012 If you need a Auto-TT ECU to test in your car then i could send you mine bud, just remember to send me my one back Thanks for that bud i'll try another icv first ive cleaned mine but you never know it could be that. I pm'd dude and he suggested try another icv so ill try that route first. Quote Link to comment Share on other sites More sharing options...
tony tt Posted April 3, 2012 Author Share Posted April 3, 2012 The TT should idle between 600-700rpm, the NA 650-750rpm. Did it just suddenly start idling low, was anything done to the car that might have triggered the problem? Have you checked the ECU for fault codes and checked the O2 sensor is working? If the battery is okay, you've cleaned the ICV and tried reseting the ECU, I'd next check the plugs, check/clean the air filter, check the vacuum hoses for leaks and clean/secure the battery terminals and ground points - note if you disconnect the battery it'll need a run out before it'll idle properly. Hi Nic when i bought the car it was idleing around 400rpm which i thought was normal as it's my first tt auto. (TT6 manual before) It seems to be getting gradually worse. I have bpu the car since i got it and it was serviced with new plugs (colder grade) only 1000miles ago. Done the ecu reset when i went bpu panel filter is also clean as a whistle. How do i check the ecu for fault codes? Havent checked the 02 sensor yet either but i will get it to the local garage for a check over as ive no technical knowledge for it. Quote Link to comment Share on other sites More sharing options...
drift_bear Posted April 3, 2012 Share Posted April 3, 2012 Have you checked the coil packs? Mine done the same as yours (once) and idled to low and then nearly cut out at traffic lights/stopping though, I left it overnight and its fine! Hasnt happened since... Quote Link to comment Share on other sites More sharing options...
tony tt Posted April 3, 2012 Author Share Posted April 3, 2012 Have you checked the coil packs? Mine done the same as yours (once) and idled to low and then nearly cut out at traffic lights/stopping though, I left it overnight and its fine! Hasnt happened since... If it was a coil pack would it not fail at wot or show up on wot? It pulls very smooth mate so im not sure it's a coil pack. Quote Link to comment Share on other sites More sharing options...
Dan_Turism0 Posted April 3, 2012 Share Posted April 3, 2012 My NA does similar if i take it for a short run switch it off then start it back up again it tries to idle around 200rpm almost stalling itself Quote Link to comment Share on other sites More sharing options...
Nic Posted April 3, 2012 Share Posted April 3, 2012 How do i check the ecu for fault codes? Havent checked the 02 sensor yet either but i will get it to the local garage for a check over as ive no technical knowledge for it. These threads explain how to check for ECU fault codes and O2 sensor function. http://www.mkivsupra.net/vbb/showthread.php?35920-How-To-Check-the-diagnostics-codes&highlight=codes http://www.mkivsupra.net/vbb/showthread.php?35940-Narrowband-O2-Sensor&highlight=oxygen Quote Link to comment Share on other sites More sharing options...
Mattross1313 Posted April 11, 2012 Share Posted April 11, 2012 Hey Tony, did you get to the bottom of your low idle issue? Mine is the same, once wam it will idle at 3-400 rpm. It sits there quite happily, but it does seem low. Mine is a TT auto with BPU also. Matt Quote Link to comment Share on other sites More sharing options...
tony tt Posted April 11, 2012 Author Share Posted April 11, 2012 Hey Tony, did you get to the bottom of your low idle issue? Mine is the same, once wam it will idle at 3-400 rpm. It sits there quite happily, but it does seem low. Mine is a TT auto with BPU also. Matt I havent yet mate no it stalled on me the other day aswell i just dont have the time just now to get to the bottom of it. Quote Link to comment Share on other sites More sharing options...
Abz Posted April 11, 2012 Share Posted April 11, 2012 I had a similar issue on my previous auto TT, it was sometimes idling low, mainly when it was warm. Turned out the throttle cable was a little loose (I mean ever so slightly). Just a thought Tony. Quote Link to comment Share on other sites More sharing options...
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