NickBA-XR6T Bronze Donating Members 386 Member For: 13y 1m 1d Posted 27/12/12 08:04 PM Share Posted 27/12/12 08:04 PM Hi,Car threw 2 codes yesterday. Lean Bank 1 which was fixed with an o2 sensor as the one on there was frayed by the heat shield. Second error was as per the title. My mechanic says that it means the throttle body is gone and needs replacing. He said to get one from the wreckers. Has anybody else had the same code or can confirm it is definitely the throttle body that has had it? Vehicle is an 03 XR6T. Many thanks. Nick Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/ Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 10m 11d Gender: Male Location: Castle Hill Posted 27/12/12 08:45 PM Share Posted 27/12/12 08:45 PM Easiest way to prove it while car Is switched off just for safety disconnect cables each side then remove the induction system off the throttle body if its still factory setup should just get away with removing cross over. Push top throttle body see if it back if it doesn't seeing your this far take someone else to either if in Sydney pick and payless, Mccarthur ford wreckers at smuggle grange and etc or at least get price from mcarthur they aren't normally the cheapest and they normally have everything Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1341617 Share on other sites More sharing options...
NickBA-XR6T Bronze Donating Members 386 Member For: 13y 1m 1d Posted 27/12/12 08:59 PM Author Share Posted 27/12/12 08:59 PM Don't quite understand what you are saying. Hoping to get feedback from someone who has had the code before. Main issue is an unstable idle. Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1341622 Share on other sites More sharing options...
relentless xr6 Member 363 Member For: 14y 4m 8d Gender: Male Location: Sydney Posted 27/12/12 10:15 PM Share Posted 27/12/12 10:15 PM Try cleaning your throttle body... Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1341647 Share on other sites More sharing options...
NickBA-XR6T Bronze Donating Members 386 Member For: 13y 1m 1d Posted 28/12/12 02:32 AM Author Share Posted 28/12/12 02:32 AM Yeah changed all that. Done the plugs, coils, fuel pressure regulator etc etc. Anybody had this code that can tell me what their outcome was? Not just basic advice on cleaning my throttle body. Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1341713 Share on other sites More sharing options...
relentless xr6 Member 363 Member For: 14y 4m 8d Gender: Male Location: Sydney Posted 28/12/12 10:21 AM Share Posted 28/12/12 10:21 AM I think you might have to take it to a specialized ford workshop or your tuner just let them no what you have done so far. Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1341844 Share on other sites More sharing options...
bionicxr6t05 Bronze Donating Members 2,216 Member For: 13y 8m 16d Gender: Male Posted 28/12/12 10:37 AM Share Posted 28/12/12 10:37 AM Sounds like a generic scantool code, whats the actual dtc code? Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1341859 Share on other sites More sharing options...
KPM Motorsport Member 968 Member For: 19y 5m 20d Gender: Male Location: 2 Dunorlan Road Edwardstown S.A. 08 82999998 Posted 30/12/12 11:22 PM Share Posted 30/12/12 11:22 PM (edited) On 27/12/2012 at 8:04 PM, NickBA-XR6T said: Hi,Car threw 2 codes yesterday. Lean Bank 1 which was fixed with an o2 sensor as the one on there was frayed by the heat shield. Second error was as per the title. My mechanic says that it means the throttle body is gone and needs replacing. He said to get one from the wreckers.Has anybody else had the same code or can confirm it is definitely the throttle body that has had it? Vehicle is an 03 XR6T.Many thanks.NickHi NickThe code suggests that your PCM is struggling trying to maintain idle in closed loop.This means that your idle speed is fluctuating under set minimums and the PCM is trying to bring it back to correct idle speed.This usually brings on a surging idle and even stalling.You will need to have your idle system checked out to find out why it is causing your idle speed to be out of set parameters.As mentioned above some possibilities are, carboned throttle bodies or even faulty throttle bodies or tps.These are only suggestions and a full system diagnosis will be required to uncover the fault.p.s dont forget to mention to the technician re the lean mixture code. Edited 30/12/12 11:24 PM by KPM Motorsport Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1342631 Share on other sites More sharing options...
NickBA-XR6T Bronze Donating Members 386 Member For: 13y 1m 1d Posted 01/01/13 01:11 AM Author Share Posted 01/01/13 01:11 AM Is there a way to reset the PCM? The idle hunts between 730 and 750 rpm. I replaced the throttle body with a BF one and haven't had the codes reset yet. Does that mean the idle is maybe set to 750 and it is dropping to 730 and it is constantly trying to bring it back to 750? Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1342936 Share on other sites More sharing options...
NickBA-XR6T Bronze Donating Members 386 Member For: 13y 1m 1d Posted 01/01/13 01:30 AM Author Share Posted 01/01/13 01:30 AM Would it cost much for Ford to put the latest software in my car? Link to comment https://www.fordxr6turbo.com/forum/topic/83355-idle-air-control-underspeed-error-help/#findComment-1342940 Share on other sites More sharing options...
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