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Lumpy cold idle

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chrisr:
Can anyone tell me what is causing my 2002 2.2 petrol to have a lumpy tickover from cold, almost to the point where it cuts out, it’s fine once it’s warmed up. Thanks

Doctor Gollum:
ECU coolant temp sensor failing or a split breather hose.

chrisr:
Thanks Doctor, where would I look for a split breather hose?

cam.in.head:
not familiar with the 4 cylinder ones.do these have an idle air valve ?
if so is it working ?

Fraggles Rock:
Have a read of these...

http://www.omegaowners.com/forum/index.php?topic=90528.0

http://www.omegaowners.com/forum/index.php?topic=90586.0

http://www.omegaowners.com/forum/index.php?topic=90597.0

The 2.2 is a progression of the 2.0 so much of the same applies.

If the breather hoses are bad, then they will either be rock hard and brittle or really soft and gooey. Neither is ideal.

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