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10-05-2007, 09:13 PM
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Starter Motor
Join Date: Apr 2007
Posts: 4
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The car is a 2002 au series 3 xr8 VCT. Fine at idle but seams to miss fire when i am driving. Any ideas. Just changed leads and plugs and double checked connections. would a diagnostic self test give me any hints and if so how can i do one?
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10-05-2007, 09:18 PM
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#2 | ||
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FF.Com.Au Hardcore
 
Join Date: Dec 2004
Posts: 12,083
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XR8 or XR6VCT?
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Older, wiser, poorer. Now in Euro-Trash. VW Coupe V6 4motion.
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10-05-2007, 09:37 PM
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#3 | ||
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not here much anymore
Join Date: Dec 2004
Location: Sthn NSW
Posts: 22,918
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how many kms, any mods done etc
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2024 F150 XLT
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10-05-2007, 10:05 PM
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#4 | |||
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Regular Member
Join Date: Jan 2006
Location: somewhere in a freezer near you
Posts: 94
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Quote:
Guide dog Casper?? LOL!! |
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10-05-2007, 10:09 PM
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#5 | |||
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FF.Com.Au Hardcore
Join Date: Dec 2004
Posts: 12,083
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Quote:
__________________
Older, wiser, poorer. Now in Euro-Trash. VW Coupe V6 4motion.
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10-05-2007, 10:47 PM
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#6 | |||
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FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
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Quote:
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10-05-2007, 11:09 PM
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#7 | ||
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Young !@#$ Head
Join Date: Feb 2007
Location: Gold Coast
Posts: 796
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I wouldnt mind one for my series 3. I must have been sleeping when they released that motor
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11-05-2007, 11:12 AM
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#8 | ||
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Starter Motor
Join Date: Apr 2007
Posts: 4
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It has pacemaker extractors and a 3inch stainless steel exhaust. SS induction system.
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11-05-2007, 11:13 AM
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#9 | |||
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Back to the AU
Join Date: Jul 2006
Location: Sydney
Posts: 485
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Quote:
 : 02auxr8, I'm guessing your car is an XR8 right? In which case it doesn't have VCT. The only Falcon V8 to have VCT (that I'm aware of) is the SOHC 5.4 Boss. Reason for confusion is there is an XR6 VCT. Its easy to accidentally hit a 6 instead of an 8.
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2001 Ford AUIII Falcon XR8 Manual - Can't get enough of the AU 2001 VW Bora V6 4Motion - If I squint it almost looks like a Sierra Cosworth |
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11-05-2007, 11:28 AM
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#10 | |||
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Miami Pilot
 
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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Quote:
: LOL.
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The Hammer: FG GTE | 376rwkw | 1/4 mile 11.793 @ 119.75mph 1.733 60' (4408lb) 1 of 60 FG MK1 335 GTEs (1 of 118 FG Mk 1 & 2 335 GTEs). Mods: Tune, HSD/ShockWorks, black GT335 19” staggered replicas with 245 & 275/35/19 Michelin Pilot sport 5s Daily: BF2 Fairmont Ghia I6 ZF, machine face GT335 19” staggered Replicas with 245s and 275s, Bilsteins & Kings FPV 335 build stats: <click here> Ford Performance Club ACT |
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11-05-2007, 11:30 AM
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#11 | |||
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Back to the AU
Join Date: Jul 2006
Location: Sydney
Posts: 485
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Quote:
__________________
2001 Ford AUIII Falcon XR8 Manual - Can't get enough of the AU 2001 VW Bora V6 4Motion - If I squint it almost looks like a Sierra Cosworth |
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11-05-2007, 01:46 PM
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#12 | ||
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Starter Motor
Join Date: Apr 2007
Posts: 4
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Sorry remove the vct remark-its my brothers car, just posting for him as he does not have the net. it is the 2002 series 3 au xr8. So can you help at all.
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11-05-2007, 01:51 PM
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#13 | ||
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Banned
Join Date: Jan 2005
Location: Qld Moderator
Posts: 3,731
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Looks like you have checked the usual suspects, (plugs, leads, loose conections to coil pack), what about a faulty coil pack , dirty injectors, what about the alternator pumping out the correct voltage.
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11-05-2007, 02:03 PM
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#14 | ||
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Starter Motor
Join Date: Apr 2007
Posts: 4
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Going to go through those on saturday. Thanks. any other thoughts and any idea on the computer self test.... i know on some other cars i have owned you could use a multimeter or even a led to get a sequence code out of it... Or have they done the typical where you need a special tool or diagnostic unit. Or would this be a waste of time on the type of problems i am having.
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11-05-2007, 06:25 PM
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#15 | ||
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Bear with a sore head
Join Date: Dec 2004
Location: Adelaide
Posts: 3,703
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Theres two integral parts to an engines operation that critical in making it run right. You cant have one without the others, and you need both working in sync or you'll get a rough, or worse, no idle as she wont go. Fuel and spark are those two things.
It sounds like you've covered most of one side, short of a coil or some other electical problem, I think you have a problem on the fuel side. I would be starting with checking fuel pressure. I would also check that the injectors aren't clogged up. If you find that the fuel is stail, it's most likely the whole system will need a flush including replacing a fuel filter. |
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11-05-2007, 08:27 PM
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#16 | |||
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FF.Com.Au Hardcore
Join Date: Mar 2005
Location: NSW
Posts: 1,802
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Quote:
__________________
T2 TE50 no:154 Narooma blue AU2 XR8 ute XR4 fiesta |
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11-05-2007, 10:19 PM
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#17 | ||
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FF.Com.Au Hardcore
Join Date: Mar 2006
Posts: 581
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When you say misfire is it missing or is it a backfire from inlet. backfire check for air leakage between MAF and throttle body
Missing can also be caused by a weak or broken valve spring which performs at idle but not above. When its a mechanical issue it usually takes out the cylinder diagonally opposite on the coil pack and you should have coil pack fault codes registered on the ECU. Of course this is on the outside but not uncommon but check all the other possibilities first, |
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11-05-2007, 10:26 PM
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Back to Le Frenchy
Join Date: Feb 2005
Location: Back home.....
Posts: 13,346
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I'd say coil pack. A test on it would only cost you $20 from a decent mechanic. If it does turn out to be one make sure you replace both but don't get them from Ford.
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Quote:
07 Renault Sport Megane F1 Team R26 #1397
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AU XR8 VCT miss firing
Linear Mode
