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10-06-2010, 02:31 PM
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2mny projects 2 lttl time
Join Date: Oct 2007
Location: Bald Hills Qld
Posts: 338
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My AU3wagon developed a miss under load.
The exhaust was drooping and a bit loud due to broken rubber "hanger" and I jacked the tailpipe up so that I could fit a new rubber hanger at the cat. At the same time I degreased the engine and since then it misses under load. It idles fine, revs out smoothly in Park or Neutral if accelerator is pushed in slowly, but push it in fast and it coughs. While driving, it does the same, always coughing and missing under load. I still haven't resealed the leaky exhaust yet, but the noise is tolerable. Don't really want to spend a million dollars replacing all the electrics if its possible that its related to the exhaust leak. Any help much appreciated |
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10-06-2010, 03:02 PM
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Flairs - Truckers Delight
Join Date: Aug 2006
Location: Brisbane Northside Likes: Opposite Lock
Posts: 5,731
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Exhaust leaks don't make your car miss
the problem you have will be a fuel or spark issue - i'm putting my money on spark. How old are your leads and plugs? Is a lead full of degreaser? Did you degrease your coilpack by mistake?
__________________
Current: Silhouette Black 2007 SY Ford Territory TX RWD 7-seater "Black Banger"
2006-2016: Regency Red 2000 AUII Ford Falcon Forte Automatic Sedan Tickford LPG "Millennium Falcon" |
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10-06-2010, 03:30 PM
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Banned
Join Date: Apr 2007
Posts: 734
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Quote:
also possible to get water in injector plug/s if over exuberant with hose pressure... |
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10-06-2010, 08:59 PM
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2mny projects 2 lttl time
Join Date: Oct 2007
Location: Bald Hills Qld
Posts: 338
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Quote:
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10-06-2010, 09:35 PM
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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Warning: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 17 in /includes/functions_warning.php on line 707
what does this mean? |
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10-06-2010, 09:37 PM
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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if it was`nt doing this before you washed the motor ,my first stop would be pulling the spark plug leads off one at a time and either spraying them with moisture displacer or wiping them clean and dry with rag and see how it goes, if its still doing it i would do the coil pack, knowing what a **** of a place the coil pack is in i`d probably try drowning it with crc/wd40 and give it another try rather than trying to pull the leads off.
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10-06-2010, 09:39 PM
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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post 5 i tried to preview my post and that error came up mr moderator.
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10-06-2010, 11:28 PM
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pursuit ute baby
Join Date: Jun 2010
Posts: 864
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mine was missing under load.
replaced the spark plugs (they were shagged) and fuel filter. it will either be : crappy fuel fuel filter spark plugs leads coilpack. or possibly o2 sensor. most likely, hit up leads/plugs first. |
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11-06-2010, 01:14 PM
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2mny projects 2 lttl time
Join Date: Oct 2007
Location: Bald Hills Qld
Posts: 338
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THANKS GUYS ............Problem solved
All replies appreciated I replaced the coilpack with the one out of my Ute, and in doing so found there was still oily residue on the bottom of the leads and over the coilpack. I think the "old" coilpack is still good, and it was just the dirty residue, but will confirm or deny this when I clean it up and test it in the ute. Thanks again, Keith . |
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11-06-2010, 01:20 PM
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Flairs - Truckers Delight
Join Date: Aug 2006
Location: Brisbane Northside Likes: Opposite Lock
Posts: 5,731
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 cool man
__________________
Current: Silhouette Black 2007 SY Ford Territory TX RWD 7-seater "Black Banger"
2006-2016: Regency Red 2000 AUII Ford Falcon Forte Automatic Sedan Tickford LPG "Millennium Falcon" |
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26-10-2010, 09:35 PM
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Starter Motor
Join Date: Jul 2006
Posts: 8
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Hi ,
I seem to have the same issue. I have just changed plugs, leads and coil pack. Havent done a fue filter for about 50000ks. Its a AU series 2 Fairmont 2000 model with 195K on the clock. Its good at idle, on cruise but when you snap the throttle from a stand still or even when idling , it has a splutter and hesitation, then revs cleanly and pulls normally. Could it be the O2 Sensor?? All help appreciated. Thanks Spazzz |
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26-10-2010, 09:58 PM
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Rob
Join Date: Jan 2010
Location: VN Capital
Posts: 1,584
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Quote:
__________________
99 liquid silver AU Classic -Sold
Supercharged Nissan 350z 280rwkw Blueprint series 3 AU V8 manual |
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26-10-2010, 10:10 PM
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Starter Motor
Join Date: Jul 2006
Posts: 8
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Yeah only other thing is to try the o2 sensor or the fuel filter.
Done leads, plugs and coil pack this evening, no joy. |
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26-10-2010, 10:53 PM
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Noctunral by nature.
Join Date: Mar 2007
Location: NSW,mid north coast.
Posts: 296
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Im guessing its and AU 6, they have sequesntial injection timing.... i know that squential plays up just like this when the syncroniser is disconnected, im quite sure the au's had a sensor of sorts to tell where its at.
try pulling the codes (you can get a scanner hand tool cheap as **** from ebay or even some good electronic shops) im sure if you dont have a book for you car you can post it up here and someone can tell you what fault it relates too. just thinking outside the box if all the above suggestions dont help.
__________________
98 Au V8 Forte (1500 kilo car) LSD, Pacie comp extractors into pacie cats into lukey 3" exhaust, New ecu, Powerbond street balancer, injectors, tyres (on 17" tickford rims form factory) Slotted and cross drilled rotors front and back, New radiator and hoses new crank position sensor and cam sensor plus gear, new leads and iridium plugs and new accel coil packs. New S5 solenoid. plus flash tuner (SCT X3 flash tuner) |
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27-10-2010, 09:35 AM
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Starter Motor
Join Date: Jul 2006
Posts: 8
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Yep, its a AU series 2 6 cyl.
Was hoping for a solution without buying more diagnostic equipment. Its a pain in my A2se. Thanks for the help. Spazzz |
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30-10-2010, 03:59 PM
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Regular Member
Join Date: Jan 2008
Location: Australia
Posts: 187
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Hey...
it sounds pretty much like plug and/or leads... I had the same issue and after changing plugs and leads it runs smooth as new. The Moose |
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30-10-2010, 04:03 PM
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Regular Member
Join Date: Jan 2008
Location: Australia
Posts: 187
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Quote:
Hi there.... can you tell me what code reader is suitable for the AU as it has no OBD-II coding ? I spent hours online and all I could find were some suspicious dealer. I found out that some code reader can only do the engine but not the auto tranny and so on... Could ya please tell me what code reader is best for the AU and can in fact read everything ? Didn't wanna change subject here.....but feedback is appreciated... Thanks cheers The Moose |
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30-10-2010, 09:02 PM
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Its gone V
Join Date: Sep 2005
Posts: 359
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i had simular problems, done coil packs, leads, plugs, filters, fuel reg. nothing same same. then i cleaned my map/maf and all is well. the easiest way to clean it i found was to remove my throttle body and spray CRC contact cleaner on it from the opening.
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02-11-2010, 06:57 PM
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#19 | ||
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Regular Member
Join Date: Jan 2008
Location: Australia
Posts: 187
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Hi SIKSIX...
I might try that as well because I"ve noticed that my Falcon doesn't idle that smoothly...it chakes a bit and the rpm is going up and down...not much but you can slightly notice it. If i turn aircon on the engine runs smoother than without. By the way...where can I find that EGR valve ? I wanna clean that as well... Cheers The Moose |
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Miss under load problem
Linear Mode
