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Home > Maintenance & Modifications > engine idle speed takes a while to return to normal (750) |
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pcheaven Member Since: 19 Jan 2010 Location: Kent Posts: 1459 |
when stopped atg a jucntion etc, the idle speed is around 1150, and takes up to 5 seconds to return to around 750.
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29th Jun 2010 8:06 pm |
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pcheaven Member Since: 19 Jan 2010 Location: Kent Posts: 1459 |
drove to lr in lewes, they had the car all day - and could not fault it -- bl00dy tw@ts
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5th Jul 2010 5:37 pm |
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MacWallace Member Since: 28 Feb 2010 Location: Perthshire Posts: 148 |
Sounds to me like a mixture problem! Should be easy to identify! |
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5th Jul 2010 7:03 pm |
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Grumpa 2 Member Since: 02 Jan 2009 Location: Notts.. Posts: 96 |
Mines always done this but at 1000 rpm not 1500. Had it checked at two different dealers who both said the same "Nothing wrong, its normal" |
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5th Jul 2010 10:38 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
For those who have the problem with high RPM, a question: do you have a DPF?
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6th Jul 2010 8:02 am |
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mcphersonstrut Member Since: 21 Jul 2009 Location: In the land of 2 wheel drive and 60mpg Posts: 2164 |
Mr Grumpa 2 - long time no speak, hope you Mrs G and the family are well |
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6th Jul 2010 8:03 am |
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jbvox Member Since: 27 Oct 2008 Location: W Vl Posts: 57 |
mine is doing the same (pauzes at 1000 rpm before going down @ 750 rpm) and this since the first day. In cold temp it's less than now (warm) and I was told that this is normal... I have NO DPF, and was told that the DPF has nothing to do with this... heard, not official, that it's because they reduced the idle speed as low as possible (less polluting) and going that low directly risks to stop the engine. so, instead the idling down goes in steps... (not a official explanation of a LR technicien, but a guy who knows engines) Fl2 zermattsilver TD4 S man |
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6th Jul 2010 12:18 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
If you don't have DPF, indeed, the DPF has nothing to do with this... But with a DPF, in order to clean it, the EGT (exhaust gases temperature) must be raised up to 650 degrees in order to clean (burn, more likely) the particles inside the DPF. This is done by modifying the injection process (adding a post injection phase, after the combustion stroke), restricting the air intake (for slower combustion and for a slower speed of the exhaust gases) and, of course, by raising a bit (for efficiency) the idle speed. So who told you that a DPF regeneration has nothing to do with raised idle speeds, no offence, must read some more... The web is full with explanations of the process. |
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6th Jul 2010 12:43 pm |
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pcheaven Member Since: 19 Jan 2010 Location: Kent Posts: 1459 |
humm, will check for DPF tonight - who can I tell? thanks |
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6th Jul 2010 2:28 pm |
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pcheaven Member Since: 19 Jan 2010 Location: Kent Posts: 1459 |
ok checked my VIN 8th letter is a B so I should not have a DPF..... |
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6th Jul 2010 5:42 pm |
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ou toppie Member Since: 18 Mar 2010 Location: cullinan Posts: 32 |
Good Evening
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8th Jul 2010 4:10 pm |
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pixies fella Member Since: 09 Jul 2010 Location: nottingham Posts: 2 |
Hi everyone , new to this site so please go easy with me . with response to the idle speed problem , I had the same with my 07 XS. I took it to the dealers after reading on this site about software needing a fix. I quoted this site to the dealers and the fix I had read about and low and behold after putting a software update on to the ECU the problem stopped.It has been fine since (about 5 months).Hope this helps |
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9th Jul 2010 9:51 pm |
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s7gpt Member Since: 21 May 2010 Location: Leeds Posts: 315 |
As mine does it too anychance you could post deatils of the software fix used - ref number or something so i can ask the dealers for the same freelander 2 SE black and beige - now sold |
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12th Jul 2010 8:25 pm |
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pixies fella Member Since: 09 Jul 2010 Location: nottingham Posts: 2 |
I will try and find out for you. When the fix was done they told me there were some errors also on the ecu but they didn't give me a print out of them. They should have a record of this I would have thought as it was warranty work so i will speak to them and try to get some info for you. |
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12th Jul 2010 9:14 pm |
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