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13-05-2008, 10:52 AM
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#1 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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Just bought a manual ute and when I got it the revs had about a two second delay when you take your foot off the accelerator. As in the revs stay put for a few seconds till it drops to idle. I took it to a mate of mine and he pointed out the power steering sensor was faulty and holding the revs high. After I replaced it it definately improved but it still had a slight delay. I guess about 1 second. My mate thought the computer might have to relearn but its been about 2 weeks now. Its not the throttle cable and I have cleaned out the thing (forgot the name at this moment) that controls the idle. I also swapped the TPS with a mates and its not that. Any ideas would be appreciated.
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13-05-2008, 10:53 AM
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#2 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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It also idles quite well after the delay.
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13-05-2008, 10:58 AM
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#3 | ||
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Back to N/A land
Join Date: Jan 2005
Location: Perth
Posts: 610
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Mine AUIII XR8 does the same thing, however since I've only driven in like 40km in total over the last 6 months it hasn't really been an issue for me
None the less, I experienced the same thing.. But never troubleshooted (If it is even a problem -- dashpot delay increase to combat clunky gear changes ??) |
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13-05-2008, 12:23 PM
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#4 | ||
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Van Mad
Join Date: May 2006
Location: Legana, Tasmania
Posts: 181
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Is the aircon on? I noticed that mine does a similar thing when the aircon is on - holds the revs up a bit when changing gears...
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13-05-2008, 12:39 PM
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#5 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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Yes and no monkeysxr6. I have tried it either way and I still have the delay. One thing I did try was disconnecting the TPS and it seems to fix the problem. But my mate tells me that its just telling the computer that the throttle is still at idle. Like I said though I did swap the TPS with a mates and it still does the same thing. I am guessing its another sensor problem. But which one ? What would be the consequences if I put a plate between the thing that automatically adjusts the idle so that it becomes ineffective and then adjust the idle with the stop screw ?
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13-05-2008, 12:52 PM
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#6 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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To fault find the power steering sensor my mate started the car and got me to move the steering wheel. He said the revs should increase slightly. I did this and the revs did not move. He them disconnected the sensor and put a short accross the terminals and the revs improved straight away. With the aircon I definately notice a change in revs between aircon cycles so I am guessing the aircon sensor is OK. What else is supposed to control the idle that I can check ?
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13-05-2008, 12:58 PM
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#7 | ||
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Miami Pilot
 
Join Date: Jan 2005
Location: ACT
Posts: 21,704
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The ISC valve. Cleaning it if it's a little buggered is only a short term stop gap. It may actually be bad enough to need replacing.
__________________
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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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13-05-2008, 02:36 PM
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#8 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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JC, where is the ISC valve and what does it do ?
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13-05-2008, 05:22 PM
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#9 | |||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Quote:
Here's how to find and clean it. Cleaning ISC Valve http://www.fordforums.com.au/showpos...9&postcount=43 Cheers, GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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13-05-2008, 06:44 PM
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#10 | ||||
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Sly like a G6
Join Date: Jun 2006
Location: Hunter Valley Whine Country
Posts: 1,808
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Quote:
Quote:
__________________
The Frankenfalcon... AU1.5 Wagon, BA brakes, AU2 booster, BA2 XR6T engine, stock from airbox to turbo, 8psi/98 octane tune 240RWKW, BF XR6T cat, quiet 3" zorst, Pex BSO660 & BSO439 mufflers, 84 db, built BTR box, 3.08 LSD, Emer SVI LPG, AU1 XR8 alloys, Momo wheel, JVC KDR746BT head unit, Aerpro steering wheel control wiring. Sleeper, anyone? |
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14-05-2008, 01:38 AM
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#11 | |||
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Miami Pilot
Join Date: Jan 2005
Location: ACT
Posts: 21,704
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Quote:
Ford know it as the Idle Air Control Valve, I guess colloquially it is known as he Idle Speed Control valve. The rest...I think you know already.
__________________
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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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14-05-2008, 09:03 AM
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#12 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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I have actually cleaned the ISC or the IAC but noticed little difference (thats the thing I couldnt name in my first post). I will swap it with my mates and see if that makes a difference. Thanks guys and girls.
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14-05-2008, 11:15 AM
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#13 | ||
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The Monty
Join Date: Oct 2007
Location: Geelong
Posts: 1,226
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my mates XR6 EL does the same thing the revs stay up for like a seconds then drop, i just ashumed it was an XR thing...
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Throttle stays high for 1 second
Linear Mode
