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Author Topic: 2.2 rough idle when cold  (Read 7014 times)

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tunnie

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Re: 2.2 rough idle when cold
« Reply #30 on: 15 March 2016, 22:25:26 »
DI?

2.2 has a single coil pack  :y
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Viral_Jim

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Re: 2.2 rough idle when cold
« Reply #31 on: 15 March 2016, 23:42:07 »
Ah, sorry, Saab speak creeping back again.  :-[

The single black plastic thingy running between the cam covers is known as a DI (Direct ignition as opposed to Direct Injection) Cassette/Pack on GM era saabs.

Is it possible to change single coils on the 2.2 ones or are they "potted" together as they are on Saabs?
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05omegav6

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Re: 2.2 rough idle when cold
« Reply #32 on: 16 March 2016, 00:54:06 »
Single unit, common to several four cylinder Vauxhalls ;)

The saab units are a stupid shape to save the ignomy of fitting a cover plate ::)
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Nick W

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Re: 2.2 rough idle when cold
« Reply #33 on: 16 March 2016, 08:56:59 »
Quote from: Harris K Telemacher on 16 March 2016, 00:54:06
Single unit, common to several four cylinder Vauxhalls ;)



Common and cheap. Which is what service parts should be.
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Viral_Jim

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Re: 2.2 rough idle when cold
« Reply #34 on: 16 March 2016, 09:06:07 »
That is good news. The Saab ones were in the region of £200. Or £50 if you were satisfied with a lifespan of about 1000 miles.
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Omena

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Re: 2.2 rough idle when cold
« Reply #35 on: 18 March 2016, 16:30:10 »
Today was - 8 Celsius.  Cold start idle revved in 3000rpm and then dropped.

When i bought car cold idle was max 1500rpm no matter how cold was.


Something is now went wrong.  No fault codes.
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Omega 2.2 petrol MY2000

JoeRadosavljevich

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Re: 2.2 rough idle when cold
« Reply #36 on: 19 March 2016, 16:52:06 »
vacuum leak
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SIR Philbutt

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Re: 2.2 rough idle when cold
« Reply #37 on: 19 March 2016, 18:07:02 »
Quote from: JoeRadosavljevich on 19 March 2016, 16:52:06
vacuum leak

Totally agree, air getting in system after the MAF

when tickover is rough spray brake/carb cleaner 'lightly' around the small vac pipes, brake servo, HBV, throttle body, pipes from cam cover to TBody. and EGR (rear of head). If tickover smooths then find the leak. Two small vac pipes go through bulkhead to cabin heater control, could be leaking behind dash, temporarily clamp them to test.

This could also be Lamba related eg not sensing correctly or heaters not working correctly, bit harder to diagnose without swopping for known good

HTH
Phil
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JoeRadosavljevich

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Re: 2.2 rough idle when cold
« Reply #38 on: 20 March 2016, 19:14:36 »
It is either what mr Phil said or just stick your head under the bonnet and listen carefully. You should be able to hear hissing sound.

By the way, I didn't know that hbv could also be leaky of vacuum.
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