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| High Idle https://www.fiesta-si.com/forums/viewtopic.php?f=4&t=13585 |
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| Author: | sjoyce666 [ Sun Nov 23, 2008 4:39 pm ] |
| Post subject: | High Idle |
Recently my car has started to idle alot higher than normal When coming to a junction it is idleing at 1.5k instead of 1k like normal Also when changing gear the revs are not dropping like they normally do, say i change gear at 3k by the time i get on the accelerator again the revs would have dropped but now the revs are still 3k when im back on the accelerator Is this going to be the usual case of clean the MAF and ISCV ? This isnt every time i come to a junction either, sometimes it idles fine but it is becoming more common for it to not idle correctly than for it to idle correctly at 1k Scott |
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| Author: | FuriousFiesta [ Sun Nov 23, 2008 8:10 pm ] |
| Post subject: | Re: High Idle |
ISCV most likely mate. |
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| Author: | sjoyce666 [ Sun Nov 23, 2008 10:06 pm ] |
| Post subject: | Re: High Idle |
Thought it probably would be, i'll try the usual carb cleaner in the butterfly and a different TPS as well and see what happens Scott |
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| Author: | happypaul [ Mon Nov 24, 2008 12:03 am ] |
| Post subject: | Re: High Idle |
take the ISCV off completely and give it a proper good clean out |
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| Author: | EvilDes [ Mon Nov 24, 2008 8:40 am ] |
| Post subject: | Re: High Idle |
If that doesn't cure it, probably a vacuum leak. When you start the car firs thing, does it idle normally, then idle high after driving? |
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| Author: | sjoyce666 [ Mon Nov 24, 2008 9:19 am ] |
| Post subject: | Re: High Idle |
| Author: | EvilDes [ Mon Nov 24, 2008 11:17 am ] |
| Post subject: | Re: High Idle |
Yeah, I had the same on my Si, would start it up and it'd be fine, drive around and it would sometimes be ok, but if I ever booted it, it wouldn't settle low again. Turned out to be a bit of vacuum pipe under the coil pack had a hole in it. When you boot it, it sucks more air in and confuses the ECU so it comepensates with the higher idle. Something to bear in mind. Check out your vacuums before you spend any cash. 
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| Author: | happypaul [ Mon Nov 24, 2008 11:26 am ] |
| Post subject: | Re: High Idle |
Yeah that pipe that goes from the front breather to the nipple under the coilpack is a pain in the arse. Kept me changing things for 6 months before I noticed it 
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| Author: | hothead_steve [ Mon Nov 24, 2008 11:42 am ] |
| Post subject: | Re: High Idle |
i've got a similar problem with mine. sorry to sound stupid but whereabouts is the ISCV? and what does it look like?? 
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| Author: | happypaul [ Mon Nov 24, 2008 12:08 pm ] |
| Post subject: | Re: High Idle |
| Author: | EvilDes [ Mon Nov 24, 2008 12:21 pm ] |
| Post subject: | Re: High Idle |
| Author: | happypaul [ Mon Nov 24, 2008 9:17 pm ] |
| Post subject: | Re: High Idle |
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