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12-10-2008, 09:23 PM
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Regular Member
Join Date: Sep 2005
Posts: 326
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Friends have just bought an LT Zetec Focus(Auto). It has only done about 2100kms(700 of them done by the dealer trying to find the fault). The problem is that "sometimes" when taking off from the lights, there is no throttle response for 5 seconds or so and then the revs start to build and the car moves off. Once the car is moving there is no issue. They find it very difficult to do a U turn or pull out into traffic. As I said, this fault occurs "sometimes". The dealer has been unable to fault the car. Is this fault a "once of" or have others had this occur to them. Any help will be appreciated.
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13-10-2008, 03:41 PM
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Victoria
Posts: 551
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Sounds like a GB problem - going into limp mode. If so an error code should be logged unless of course it's power related like a loose cable or the like... Fortunately most of us drive the manual version.
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13-10-2008, 04:11 PM
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#3 | ||
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yum
Join Date: Jan 2005
Posts: 1,417
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I had a similar problem where the throttle position sensor/servo was stuffed and there was a flatspot between 50-75% throttle. Ended up with the engine light coming on every trip, and "speed limited" notice coming up on the trip meter... I'm not sure at what speed it was limited to, seemed unlimited at the time.
 A new throttle body later and software flash and all was good.
__________________
2005 LS Focus LX
Nov05 | Manual | Black Sapphire 250,000kms. |
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13-10-2008, 04:32 PM
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#4 | ||
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EuroFordClub
Join Date: Oct 2007
Location: SE Melbourne
Posts: 727
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Does it make a difference if you slam the accelerator really hard? Because if it's only light acceleration that it's occurring on, whereby you don't push the accelerator to the floor, it's a long shot, but might be a sticky TB. Where it might take a bit of throttle to get the butterfly valve to open. so if you slam the accelerator it might loosen it up straight away. That's the only thing I can think of. It might be your cars way of telling you that it needs that extra pedal ;)
__________________
'08 Black Ford Focus LT CL Hatch
Far from stock... --- SOLD  : Now riding a 2009 Kawasaki Ninja 250R  : |
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13-10-2008, 06:17 PM
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#5 | ||
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Knows nothing. Apparently
Join Date: Aug 2007
Location: On the front steps, Brown-baggin' it.
Posts: 517
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Am I the only one that smirked a little after reading the word "limp"?
__________________
2008 Electric Orange LV XR5. With dreamscience strategem SCT, K&N 57i Gen2 cold air intake for more fun and demonic vaccum cleaner noise!!  1975 Mitsubishi/Chrysler GC Galant 2-door Hardtop. 4G63 DOHC heart transplant nearly complete!
Check out the build over here |
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13-10-2008, 06:26 PM
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#6 | |||
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EuroFordClub
Join Date: Oct 2007
Location: SE Melbourne
Posts: 727
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Quote:
__________________
'08 Black Ford Focus LT CL Hatch
Far from stock... --- SOLD : Now riding a 2009 Kawasaki Ninja 250R : |
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13-10-2008, 11:20 PM
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#7 | ||
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yum
Join Date: Jan 2005
Posts: 1,417
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Now that would be funny to open up a bonnet of a car and seeing their fuel injectors replaced with AMI nasal sprays.
__________________
2005 LS Focus LX
Nov05 | Manual | Black Sapphire 250,000kms. |
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14-10-2008, 10:11 AM
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#8 | ||
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Victoria
Posts: 551
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As for the TB you can hear it operate with the engine not running and ignition on. It makes a zip zip noise as you push and relax the throttle pedal. but if it makes a limp noise that spells trouble.
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16-10-2008, 09:53 AM
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Lil Henry
Join Date: Dec 2007
Location: Townsville Nth Queensland
Posts: 168
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i thought the focus and fiesta both had Fly by wire throttle?
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16-10-2008, 09:59 AM
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#10 | ||
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Lil Henry
Join Date: Dec 2007
Location: Townsville Nth Queensland
Posts: 168
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this is a 07 model throttle pedal and it is fly by wire
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16-10-2008, 11:27 AM
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#11 | ||
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Victoria
Posts: 551
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It is indeed so have the engine off and you can hear the stepper motor moving the butterfly thus the zip zip sound.
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Throttle Issue
Linear Mode
