boost69 Donating Members 737 Member For: 18y 11m 6d Posted 29/04/12 11:36 PM Share Posted 29/04/12 11:36 PM Hi Guys,The last few days my car has had a slightly rougher idle than normal when cold, and I have noticed that it seems sluggish.the car is a stock standard BF Mark II XR6T.It feels like the timing is retarded or that its not bosting like it should.There are no codes being dispalyed.Im thinking it could be either the plugs or O2 sensor, or possibly loose turbo bolts...or possibly some type of vacum leak...Anyone had similar symptoms on their XR6T? Link to comment Share on other sites More sharing options...
_Velocity_ Bronze Donating Members 2,768 Member For: 13y Gender: Male Location: Victoria Posted 30/04/12 12:13 AM Share Posted 30/04/12 12:13 AM Could be a few different things. Is it breaking down under acceleration? Could be the first sign of a coil pack breaking down. Link to comment Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 15y 5m 3d Gender: Male Location: SE Melbourne Posted 30/04/12 12:14 AM Share Posted 30/04/12 12:14 AM (edited) If there is something wrong with the o2 sensor you wont know until the car warms up a bit and the pcm switches to closed loop. If the problem is there right from a dead cold start I would check vac leaks and maybe change the spark plugs. Edited 30/04/12 12:16 AM by Paulie2256 Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 18y 11m 6d Posted 30/04/12 12:27 AM Author Share Posted 30/04/12 12:27 AM Thanks for the replies guys...there is no backfiring or spluttering under hard acceleration, I will check for vacum leaks and I will change the plugs, and take it from there I suppose. Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 18y 11m 6d Posted 23/05/12 01:57 AM Author Share Posted 23/05/12 01:57 AM Guys,I changed plugs, checked the whole turbo to throttle body path and found no leaks, also checked vacum hoses coming off the manifold and found nothing obvious...(even changed the PCV)I hooked up a boost gauge and the vacum readings are quite constant, maximum boost is around 5psi (car is stock standard).This problem with the rough idling (revs do not fluctuate), seems to have come on with the colder weather we are having lately in Sydney.The car settles down when it reaches normal operating temperature, and has not thrown any codes, and there is no splutter or backfiring under hard acceleration.Anyone had a similar experience that can assist me? Link to comment Share on other sites More sharing options...
gsd112 Donating Members 604 Member For: 13y 7m 20d Gender: Male Location: Penrith Posted 23/05/12 05:13 AM Share Posted 23/05/12 05:13 AM had the same issue with my fg. Asit was still under warranty I took it back to ford they went over it couldnt find a thing wrong reset the ecu and installed updates and it idles perfect know. Link to comment Share on other sites More sharing options...
riptide Member 733 Member For: 13y 3m 7d Gender: Male Location: Auckland, New Zealand Posted 23/05/12 06:23 AM Share Posted 23/05/12 06:23 AM (edited) Maybe coils like Velocity said.I see they are on fleabay for $85 or about $150 for genuine for a set of 6. If you change them and it doesn't fix it then you know your existing ones are probably good and it never hurts to have a spare set laying around for trouble shooting later on had the same issue with my fg. Asit was still under warranty I took it back to ford they went over it couldnt find a thing wrong reset the ecu and installed updates and it idles perfect know.is it possible to download the computer update and install yourself using HP Tuners software? Edited 23/05/12 06:25 AM by riptide Link to comment Share on other sites More sharing options...
_Velocity_ Bronze Donating Members 2,768 Member For: 13y Gender: Male Location: Victoria Posted 23/05/12 07:40 AM Share Posted 23/05/12 07:40 AM Yeah I'm in a similar boat dude. Changed plugs, 02 sensor, tightened manifold bolts and clamps.Funny thing was when I started the car after changing the plugs initially the revs were a lot higher and I noticed I hadnt plugged back in that vacumn hose from the crossover back in to that metal piping below (not sure what this is but it sucks when you put your finger over it). When I plugged it back in the car started running rough again. Link to comment Share on other sites More sharing options...
bionicxr6t05 Bronze Donating Members 2,216 Member For: 12y 8m 29d Gender: Male Posted 23/05/12 07:46 AM Share Posted 23/05/12 07:46 AM Clean your throttle body and disconnect battery for 10 minutes to reset KAM, also riptide no, you cannot get updated factory software anywhere other than ford, if your car is tuned you wouldnt wana go doing that anyway 1 Link to comment Share on other sites More sharing options...
riptide Member 733 Member For: 13y 3m 7d Gender: Male Location: Auckland, New Zealand Posted 23/05/12 08:27 AM Share Posted 23/05/12 08:27 AM (edited) If it's the base software (full flash) I can just load the parameters back in can't I? I have the HP Tuners gear here at the moment and all my tunes.Can't you send it to me I won't tell anybody. Honest Edited 23/05/12 08:27 AM by riptide Link to comment Share on other sites More sharing options...
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