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Author Topic: Sudden rough idle.  (Read 997 times)

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Davey

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Sudden rough idle.
« on: 30 January 2008, 19:29:09 »
I've got a 2.2 Omega and its been good as gold until I came off the motorway today stop at a round-a-bout and when the revs dropped it was running rough as hell.. Revs fluctating between 300 and 1500 rpm, but as soon as I touch the throttle its fine..

I've removed the coil pack and theres no oil. The manifold sounds a little rough, cant see any cracks but I can see that a new manifold as recently been fitted and the front studs have been replaced with bigger than standard items. Could a blown exhaust gasket be causing this?

Cheers  :y
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Dazzler

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Re: Sudden rough idle.
« Reply #1 on: 30 January 2008, 19:31:39 »
Probably either an air leak or the ICV. Check both.
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Dazzler

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Re: Sudden rough idle.
« Reply #2 on: 30 January 2008, 19:32:13 »
ICV is idle control valve just in case you didn't know :-/
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Davey

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Re: Sudden rough idle.
« Reply #3 on: 30 January 2008, 19:35:20 »
Do the later engines have an ISCV.. I thought the drive-by-wire system took care of it?  gonna go look with a bottle of throttle body cleaner :D
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cem_devecioglu

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Re: Sudden rough idle.
« Reply #4 on: 30 January 2008, 19:51:29 »
If you dont get any EML,

clean your EGR and ICV using carb cleaner..
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Davey

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Re: Sudden rough idle.
« Reply #5 on: 30 January 2008, 20:13:48 »
The small breather pipe that goes to the ISCV was FULL of crud and so was the ISCV.. cleaned them out and its running much much better!

I didnt even realise the Y22XE had an ISCV  :o

Cheers guys! :y
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Dazzler

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Re: Sudden rough idle.
« Reply #6 on: 30 January 2008, 20:23:10 »
Quote
The small breather pipe that goes to the ISCV was FULL of crud and so was the ISCV.. cleaned them out and its running much much better!

I didnt even realise the Y22XE had an ISCV  :o

Cheers guys! :y
;)
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