kissy Member 132 Member For: 18y 2m 19d Gender: Male Location: S.E. Melbourne Posted 04/06/08 07:41 AM Share Posted 04/06/08 07:41 AM (edited) G'Day ever since I'v had my car it surges/missfires at cruise speeds some times, ie 80 - 110km/h. When it starts doing it I just stab the throttle enough so it downshifts to 3rd then it seems to dissapear for a while.This problem only seems to exist at cruse speeds, when doing spirited driving and stop start city driving the car 100% fine. Now it's done this since befor I got my tune done, and has only recently come back after my tune got done a few months ago..The spark plugs got replaced 7 months agoFuel filter replaced 2 months agoAny ideas?? Anyone had this problem before??ThanksStefan Edited 04/06/08 07:42 AM by kissy Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/ Share on other sites More sharing options...
NVYDF6 Built F6 & VE SS-V Donating Members 582 Member For: 17y 10m 10d Gender: Male Location: Melb Posted 04/06/08 07:45 AM Share Posted 04/06/08 07:45 AM (edited) my car will surge if I have around 1/4 of a tank or less left at WOT. How much fuel did you have in your car when it was surging? Edited 04/06/08 07:46 AM by Bionic Rspec Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687741 Share on other sites More sharing options...
kissy Member 132 Member For: 18y 2m 19d Gender: Male Location: S.E. Melbourne Posted 04/06/08 08:03 AM Author Share Posted 04/06/08 08:03 AM Bionic Rspec said: my car will surge if I have around 1/4 of a tank or less left at WOT. How much fuel did you have in your car when it was surging?Well it surges sometimes when I'm crising down the hwy, ie with cruise control "on" and on flat road, it doesn't matter how much fuel I have it'll do it with a full tank. at WOT its fine... Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687760 Share on other sites More sharing options...
ratter Member 6,793 Member For: 19y 6d Gender: Male Location: @ my laptop Posted 04/06/08 08:18 AM Share Posted 04/06/08 08:18 AM Could be as simple as a slow operating O2 sensor, get it scanned and check it's operation Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687784 Share on other sites More sharing options...
Chich Damn You's A Sexy Chich Member 3,843 Member For: 17y 3m 17d Gender: Male Location: Your House Posted 04/06/08 08:18 AM Share Posted 04/06/08 08:18 AM mine is manual and does the same thing not sure what it is but I'm sure someone here will have the answer or a link to it... Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687787 Share on other sites More sharing options...
dule Donating Members 1,180 Member For: 18y 1m 17d Gender: Male Location: Sydney Posted 04/06/08 08:20 AM Share Posted 04/06/08 08:20 AM TPS maybe??? Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687789 Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 11m 10d Gender: Male Posted 04/06/08 08:26 AM Share Posted 04/06/08 08:26 AM friend had a similar problem with his old car, was a rooted torque converter. hope your problem isn't that serious! Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687793 Share on other sites More sharing options...
kissy Member 132 Member For: 18y 2m 19d Gender: Male Location: S.E. Melbourne Posted 04/06/08 10:08 AM Author Share Posted 04/06/08 10:08 AM XR06T said: friend had a similar problem with his old car, was a rooted torque converter. hope your problem isn't that serious!I'm pretty sure it's not the torque converter, as when the surging starts I loose power and the boost guage goes from around -0.5 bar vacume to around -0.1 to 0 Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687861 Share on other sites More sharing options...
mic Donating Members 1,725 Member For: 17y 4m 15d Gender: Male Posted 04/06/08 10:56 AM Share Posted 04/06/08 10:56 AM Could it be runnin rich ? Are you sure its surging ? Arent the siemens hard to tune at low rpm ? I could be way off here. Maybe though... Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687917 Share on other sites More sharing options...
kissy Member 132 Member For: 18y 2m 19d Gender: Male Location: S.E. Melbourne Posted 04/06/08 11:30 AM Author Share Posted 04/06/08 11:30 AM mic-07 said: Could it be runnin rich ? Are you sure its surging ? Arent the siemens hard to tune at low rpm ? I could be way off here. Maybe though...I think you might be off, as it was doing it this befor I got my tune done when the car 100% stock Link to comment https://www.fordxr6turbo.com/forum/topic/46294-surging-at-cruise-speeds/#findComment-687969 Share on other sites More sharing options...
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