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> Volvo V40 Gdi
taff2709
post May 20 2005, 11:05 AM
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hello all.. :)
i have a volvo v40 GDI 2000.....the engine is hunting when idling ,...it has been on the computor which indicates it is running to rich...but not where the problem is...the lamba sensor has been changed still the same .....ANYONE GOT ANY IDEAS ....THANKS
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Tech
post May 20 2005, 01:37 PM
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Welcome.

Check for borken Vaccum lines or leaks.
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ampangbear
post May 21 2005, 05:09 AM
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Welcome, Taff!
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bianchi_euro
post Jun 11 2005, 04:56 AM
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I have read the engine becomes dirty by unburned carbon substances due to European fuels which the GDI cannot take.
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JamesVOLVO
post Aug 2 2005, 09:20 AM
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sounds like you need the volvo de-coke recall , loads of gaskets loads of labour , but we do about 2 a month GDI'S are babba
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BerksV40
post Aug 31 2005, 12:44 PM
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hi.... what decoke recall? I know most GDIs seem to coke up, but I didnt know there was a recall.
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g900gti
post Mar 12 2006, 03:01 PM
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i think i may have found an easy way to fix this problem, i have been working on my gdi engine today because it failed the mot on emissions, i will post after the cars been for a retest and let you know the results.
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g900gti
post Apr 22 2006, 11:38 AM
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the car passed the mot and has been fine since, if you want to know how it was done i can post it up for you.
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Black Beauty T4
post May 6 2006, 11:02 AM
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Yes please - if you know a safe, effective & economical way to decoke a GDI then post away!

Look forward to hearing from you.

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Bicnarok
post Jan 16 2007, 02:39 PM
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Still no reply on this
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dazseaton
post May 21 2007, 04:03 PM
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hi all,

mine has just failed its mot on emissions.

the guy at the garage said i need to take it to someome with a diagnostic machine but they will just change the lamda sensor and cat till the emmisions go down.(v expensive)

i am going to try changing the oil and going for a thrash down the motorway (this worked on my golf gti)

it has very low idling for ages and sometimes keeps revving itself till it cuts out. had a quick decoke once done free by the guy who services it (dont know what he did?)

anyone any other ideas???

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Bicnarok
post May 29 2007, 01:54 PM
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Mines got a TUV (MOT) in August and I have the same problem, canīt see the emmisons being ok, it also smells of fuel.
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dazseaton
post Jun 4 2007, 08:08 AM
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got it through the emissions test. the old flush / oil change / shell optimax and a good thrash cleared it out.

the mot tester had a problem getting it to tick over. he cleaned the throttle housing which improved it enough to get it through the test.

i had to start it 10 times to get it to tickover for 20mins whilst the flush worked.
it ticks over so low it starts revving itself before eventually cutting out.

strangely though when it started to get really hot (97deg) it ticked over perfectly at around 800rom.

can anyone explain this bizarre behaviour!!!
:puzzled: :puzzled: :puzzled:
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Bicnarok
post Jun 9 2007, 01:53 PM
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Isnīt Shell optimax that expensive fuel, its called "V Power" in Europe I think.

I thought high octane fuel wasnīt good for the GDI engine.

Mine keeps revving up and cutting out also, but only when the outside temperature is around 20°c.When its colder this doesnīt occur.
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nick_w
post Jun 18 2007, 10:29 AM
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try using the engine decoking spray that you can buy, it cost about Ģ20 but it sorted mine out
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g900gti
post Jul 9 2007, 12:02 PM
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Sorry about the delay, my car passed the mot in 2006 no problems and passed in 2007 with no problems, i will get some photos of the work i done if your interested
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Smokie
post Jun 5 2008, 08:06 AM
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My V40 just failed its MOT because of emissions test. The owner of the garage is a great guy and told me that it had just about passed and when they went on to the 2nd stage of the emissions test the CO level went right above the limit so it failed. He asked me if I did long runs and I told him I travel 60 mils to and from work daily and he said that to give it a few runs in a lower gear to burn off the CO. He has also given me Forte Advanced Formula Gas Treatment to put into my engine when the tank is half full then give it a good old blast. I will update you next Mon morning after the retest. He did say that it was down to thw GDI engine and the coking levels. If that doesnt work then possibly have to get new Cat or Lambda.
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Smokie
post Jun 10 2008, 08:44 AM
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She passed but only just. He did the retest and it was worse as the engine system light came on and the airflow light. He then went onto paln B which didnt work but it got the alarm lights off. They then tweaked about with it and it passed.
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tomsk
post Jul 2 2008, 02:46 PM
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Mine does something similar.

Any idea what tweaking they did to sort out the problem for the MOT?


Thanks
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Clive Wheeler
post Dec 16 2008, 02:49 PM
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QUOTE (g900gti @ Jul 9 2007, 12:02 PM)
Sorry about the delay, my car passed the mot in 2006 no problems and passed in 2007 with no problems, i will get some photos of the work i done if your interested

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