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Author Topic: Erratic 2.2  (Read 2276 times)

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ChrisPee

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Erratic 2.2
« on: 23 December 2022, 23:16:12 »

Hi people, I have double trouble and hope i can at least fix one of my pair.
Both are 02 2.2 CDX auto saloons, and both are MOTd, the first issue may be obvious - car 1 is losing water and the header tank is pressurising, the heater works and the oil is fine, it also loses water at the rate of about 2 litres a week.
Car 2 - it has been a nightmare to start - firing & dying, firing and running on 3, then after about 10 mins it springs into normal life. I MOTd it Wednesday and on the way home it started revving erratically from tick over to 2000rpm on a cycle of about 2 seconds. I'm doing a test on car 1 tomorrow for gases in the expansion. Both cars have had long-term engine management lights on too.

Please help oh mighty gurus.  :D
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TheBoy

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Re: Erratic 2.2
« Reply #1 on: 24 December 2022, 15:39:05 »

Firstnthing is to find out why the ECU is grumpy enough to pull EML on....
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Doctor Gollum

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Re: Erratic 2.2
« Reply #2 on: 25 December 2022, 01:08:46 »

You have much more chance of the HBV failing than the head gasket.

Set the climate panel temperatures on both sides to LO and monitor the loss.
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cam.in.head

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Re: Erratic 2.2
« Reply #3 on: 25 December 2022, 09:55:38 »

hbv very likely ,only thing i would be catious of is you say its pressurising the header tank.  this wouldnt happen theoretically if you have a leak BUT it could cause the water level to rise and give the impression that its pressurising ?
need yo do ehat others have suggested.
check codes and thoroughly check hbv .
thig is ,none of these could cause an erratic idld thou ?
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Doctor Gollum

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Re: Erratic 2.2
« Reply #4 on: 25 December 2022, 13:42:16 »

hbv very likely ,only thing i would be catious of is you say its pressurising the header tank.  this wouldnt happen theoretically if you have a leak BUT it could cause the water level to rise and give the impression that its pressurising ?
need yo do ehat others have suggested.
check codes and thoroughly check hbv .
thig is ,none of these could cause an erratic idld thou ?
True, but one issue at a time...  ;)

If the codes show a misfire then the chances are the plug wells are full of oil which points directly to blocked breathers. On the four pots this in turn means the throttle body breathers are also gunged up which WILL cause poor idling ;)
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ChrisPee

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Re: Erratic 2.2
« Reply #5 on: 01 January 2023, 17:13:57 »

Sorry for the late reply, been at work every day up till yesterday.
I may have confused things here:
The car that is pressurising has oil in the plug channels - I blew them out and fitted new GM plugs. This car has had EM light on for about a year, but the water-loss issue started a few months ago. The 2nd car with the erratic revving also has plugs under oil, it hasn't been used for a year and only started once a month or so. Waiting on new plugs and I have a 2nd rocker cover gasket for this one too. What is a HBV? ☺
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Migalot

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Re: Erratic 2.2
« Reply #6 on: 01 January 2023, 17:23:31 »

Sorry for the late reply, been at work every day up till yesterday.
I may have confused things here:
The car that is pressurising has oil in the plug channels - I blew them out and fitted new GM plugs. This car has had EM light on for about a year, but the water-loss issue started a few months ago. The 2nd car with the erratic revving also has plugs under oil, it hasn't been used for a year and only started once a month or so. Waiting on new plugs and I have a 2nd rocker cover gasket for this one too. What is a HBV? ☺
HBV is heater bypass valve

What has proved very useful for me is this 19.49 code reader from euro car parts:

https://www.eurocarparts.com/p/streetwize-obdii-code-reader-for-android-and-ios-553999810

The software to buy is from https://scanmyopel.com/ (the EUR 9.99 option is best, so you can get live data). Download it to your phone and you'll get to the bottom of the management light issues straightaway. Best 30-odd you'll spend!  :y   

If you look at the next post down on Lambda issues, you can see the output!
« Last Edit: 01 January 2023, 17:30:07 by Migalot »
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Doctor Gollum

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Re: Erratic 2.2
« Reply #7 on: 01 January 2023, 17:31:02 »

Heater bypass valve. It fails often enough to be considered a service item.

Sounds like both cars require cam cover gaskets and a proper breather clean.

You have more chance of a stranger paying off your mortgage than it being a headgasket.

And if the light is on, then there's a fault, probably misfire codes or cat codes.
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ChrisPee

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Re: Erratic 2.2
« Reply #8 on: 01 January 2023, 18:02:04 »

Dr G, your wisdom is my gain master, the head gasket issue was worrying me. I think I'll give them both a really good going over. The silver car was my dads who passed away in 2014 and the black car was my mums who I lost in 2020. I couldn't bring myself to part with either, and although I know they're not exactly valuable, but I'm a big Vauxhall fan - having Victors, VX 4/90s and a Carlton as well.
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ChrisPee

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Re: Erratic 2.2
« Reply #9 on: 01 January 2023, 18:10:20 »

One other thing, I dont think I'm allowed to post in the for sale / wanted section, but some kind person had smashed the body of the passenger side wing mirror on the silver car. If by any chance someone has one for sale I would be very grateful, it's actually only the coloured part that is broken. Hope this is okay to post?
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Doctor Gollum

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Re: Erratic 2.2
« Reply #10 on: 01 January 2023, 18:12:12 »

One other thing, I dont think I'm allowed to post in the for sale / wanted section, but some kind person had smashed the body of the passenger side wing mirror on the silver car. If by any chance someone has one for sale I would be very grateful, it's actually only the coloured part that is broken. Hope this is okay to post?
If you post the above in the Test Zone and ask nicely, then one of the Admin Bods will happily move it to the Wanted Section :y
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Re: Erratic 2.2
« Reply #11 on: 01 January 2023, 18:16:40 »

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ChrisPee

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Re: Erratic 2.2
« Reply #12 on: 02 January 2023, 15:37:00 »

👍😉👍
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ChrisPee

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Re: Erratic 2.2
« Reply #13 on: 09 January 2023, 17:19:37 »

I don't suppose there are any members in north Kent that would be willing to come and have a look at my two 2.2s are there? I'm losing the will to live with them but really don't want to give up on them. Thanks - Chris 😘
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Doctor Gollum

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Re: Erratic 2.2
« Reply #14 on: 09 January 2023, 18:24:45 »

Nick W is in that part of the world.

Otherwise I may be able to assist, but you'll need to bring them here.
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