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[dunkymunky]

Hi all

I've spent about an hour reading on the forum to see if I can find my fault, but hoped you wouldn't mind if I just posted up to make sure I've understood.

I have a 2001 facelift 2.2 GLS auto. The idle is rubbish, usually around 700rpm and is hesitant to get going on acceleration.

From what I understand it could be one of teh following things:

MAF
Idle control valve (my parents had a pre-facelift omega and when it did exactly the same, they had to replace this and all was well)
EGR (Not sure if this is diesel engines only, I know my Astra and Signum had EGR vavles, both chocked up - do they exist on petrols)


Can you advise me to do anything that might help without replacing parts - i.e. can the idle air valve be given a good clean.

Any and all help much appreciated

Thanks

[The Red Baron]

you can try giving the icv a clean out with carb cleaner, i usually put a drop of light oil in after.
 

[RobG]

you can try giving the icv a clean out with carb cleaner, i usually put a drop of light oil in after.
 

Not on a 2.2

[RobG]

The idle is rubbish, usually around 700rpm

Around the norm on the 2.2. Should drop to around 6-650 when CC is activated

[05omegav6]

Is the gearbox behaving? Maf, crank and cam sensors do strange things to the 2.2 iirc

[RobG]

Have you checked plugwells for oil (whip the coilpack off, 2 torx bolts + plug at rear)

[The Red Baron]

you can try giving the icv a clean out with carb cleaner, i usually put a drop of light oil in after.
 

Not on a 2.2

lol, im not a 4 pot person. only genned up on the v6 tbh Rob. 

[dunkymunky]

So, to summarise

The 2.2 doesn't have an idle control valve?

I should take out the plugs and check they're not swimming in oil?

Any other suggestions after that? @RobG - if an idle of about 700rpm is ok for the 2.2, great, but it wouldn't explain the hesitation on acceleration???

Thanks for everyone's help so far

[dbug]

Cam sensor?

Any codes?

[dunkymunky]

Not hooked it up to a reader yet. Will my "My Naff Code Reader" from my Astra H work?

[dunkymunky]

Haha, i guess that auto correct of op...com tells me all 

[vic]

Three things to do IMHO.
a) as suggested check plug wells for oil OR water, (I've had both).
b) unplug the MAF and start her up and see if the idle improves, if it does then the MAF is the No. one suspect.
c) check air intake hoses for cracks or splits (particularly the underside). Un-metered air after the MAF causes all sorts of problems
All are NO cost options and at the very least  point you in the right direction or eliminate the two possibilities.
Vic

[dunkymunky]

OK, so thanks for all the replied.

So far I ahve unplugged the MAF, this didn't seem to make much difference, so have ruled that out for now.

Just taken plugs 1 and 2 out (assuming you start counting from the front of the block). Plug 1 was fine. Plug 2 was also ok, on the anode and diode, however, teh thread of the plug was coated in oil. is this what I'm meant o be looking out for that signals a rocker gasket failure?

[footloose]

I have the same problem and its a split vacuum pipe. Hisses like mad when you rev the engine.

[dunkymunky]

So, now I've had the motor a while I can add some detail to try and get to the bottom of it.

So, when starting it will struggle to keep going, as soon as I engage drive or reverse, it almost, and sometimes does, stall.

After a few minutes, idle is fine, will go in to D and R with no problems. However, it clearly still suffers from an acceleration issue, barely does anything from 3 - 5k rpm unless I stick my foot right to the floor and through the firewall.

So far I've unplugged the MAF, didn't appear to make a different. Checked all the hoses I can see from the top of teh engine, couldn't find any cracks. Have taken plugs 1 and 2 out. Plug 1 was fine, plug 2 had oil on the thread of the spark plug, but not on the electrodes.

Please help!!!!!