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help car running lumpy/ revs itself

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Old 03 January 2009, 03:55 PM
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burnhamshaun
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Default help car running lumpy/ revs itself

went out this morning and since then on tick over the engine is a little lumpy and seems like its struggling feels like it has flat spots when pulling away about 2-3000 rpm and when coming to a stop it revs its self up and down for about 30 seconds going upto about 2000rpm
Old 03 January 2009, 04:11 PM
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toigye
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have you checked error codes lots of things could cause this maff /idel control valve /air leak or have you drove through any water ....changed the petrol you normally use ... check error codes first take it from there ....


JollyGreenMonster.co.uk


see link i di and i rest ecu car running well now
Old 03 January 2009, 04:21 PM
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myblackwrx
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MAF
Old 03 January 2009, 04:47 PM
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burnhamshaun
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its got an fc commander can it be reset still not gone thru any water ;-( can i do any diy tests to try and pinpoint it
Old 03 January 2009, 04:47 PM
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muply
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Mine does as above replaced MAF with a new one and replaced IDLE VALVE still the same I can see a Box of matches coming out
Old 03 January 2009, 04:55 PM
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If you've got a Power Fc then i think you can check the voltages of each sensor via the Commander
Old 03 January 2009, 05:54 PM
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burnhamshaun
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Originally Posted by myblackwrx
If you've got a Power Fc then i think you can check the voltages of each sensor via the Commander
If i can check the voltage on my power Fc, then what should i be looking for??

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Old 03 January 2009, 07:17 PM
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burnhamshaun
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right checked the mass sensor by taking it of and run really lumpy when taken of and i now know that its when the engine is warm its when it starts running lumpy started it let it just sit there ticking over after about 4-5 mains a few little revs in this time upto about 3000rpm that it is running lumpy
Old 03 January 2009, 11:44 PM
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bob r
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To check the maff sensor, do the ecu checks as post 2. above.
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