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Author Topic: Astra Z16SE EGR problem  (Read 8244 times)

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TheBoy

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Astra Z16SE EGR problem
« on: 04 March 2012, 17:22:16 »
EGR faults stored. EGR already blanked.

I should point out, it has an automatic gearbox.
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JamesV6CDX

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Re: Astra Z16SE EGR problem
« Reply #1 on: 04 March 2012, 18:48:17 »
any symptoms, aside of the code?
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TheBoy

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Re: Astra Z16SE EGR problem
« Reply #2 on: 04 March 2012, 19:16:23 »
Quote from: JamesV6CDX on 04 March 2012, 18:48:17
any symptoms, aside of the code?
As it's blanked, none, other than EML
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Entwood

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Re: Astra Z16SE EGR problem
« Reply #3 on: 04 March 2012, 19:19:22 »
Is the cable connection secure ??? As it's blanked, if the ECU raises a fault its either disconnected or has developed an "internal" fault ???

Purely guessing here .... :(
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TheBoy

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Re: Astra Z16SE EGR problem
« Reply #4 on: 04 March 2012, 19:22:12 »
Accept we need to either disable egr via software, or replace/clean it.

Forgot everything else ;)
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MaxV6

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Re: Astra Z16SE EGR problem
« Reply #5 on: 05 March 2012, 00:40:10 »
perhaps i can wander over with it when you have free time , and see if anything is revealed checking live data?     ???


i can get an other egr i suppose,   but i kind of thought that missed the  point of blanking it off and trying to disable it in ECU  ::)


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TheBoy

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Re: Astra Z16SE EGR problem
« Reply #6 on: 05 March 2012, 17:50:36 »
Quote from: MaxV6 on 05 March 2012, 00:40:10
perhaps i can wander over with it when you have free time , and see if anything is revealed checking live data?     ???


i can get an other egr i suppose,   but i kind of thought that missed the  point of blanking it off and trying to disable it in ECU  ::)
All the info I can find revolves around a software update to disable it. However, it appears the fix was only implemented into the MANUAL version of the engine ECU, not the AUTO version. Grrrr.  So, although you have the latest software, it doesn't have the fix (fix being disable the EGR completely).

The original fault is caused by sooty deposits causing the valve to stick.  Blanking off cures the lumpiness around idle/low revs, but the valve still sticks, and the feedback circuit obviously allows the ECU to see this. Or thats my understanding anyway.

Given this, wonder if its worth you popping to that chavvy shop for pikeys, Wilkinsons, as their cheap paint stripper seems OK at cleaning EGRs. If you have a stiff brush to aggitate it in as well...
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MaxV6

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Re: Astra Z16SE EGR problem
« Reply #7 on: 05 March 2012, 17:54:26 »
i'll get the wife to pick some up...  (she's the night manager at Wilkinsons....   ::)   )
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Re: Astra Z16SE EGR problem
« Reply #8 on: 05 March 2012, 18:15:06 »
Quote from: MaxV6 on 05 March 2012, 17:54:26
i'll get the wife to pick some up...  (she's the night manager at Wilkinsons....   ::)   )
Does she have hankerings for a caravan?
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MaxV6

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Re: Astra Z16SE EGR problem
« Reply #9 on: 05 March 2012, 18:48:49 »
nope,   she's as much a pikeywagon hater as i am.....     :y   why do you think i married her????    ;D


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feeutfo

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Re: Astra Z16SE EGR problem
« Reply #10 on: 05 March 2012, 19:18:32 »
I take It the egr circuit can't be fiddled to loop the egr out of it all together! Brake pad sensor style?
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Re: Astra Z16SE EGR problem
« Reply #11 on: 05 March 2012, 20:27:39 »
Quote from: chrisgixer on 05 March 2012, 19:18:32
I take It the egr circuit can't be fiddled to loop the egr out of it all together! Brake pad sensor style?
Anything is possible, but reckon it won't be that simple...
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Re: Astra Z16SE EGR problem
« Reply #12 on: 08 March 2012, 16:19:05 »
Can you remember what you did in TIS when doing this update?  took me a bit to get one sorted.
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Re: Astra Z16SE EGR problem
« Reply #13 on: 08 March 2012, 16:38:28 »
Quote from: TheBoy on 05 March 2012, 20:27:39
Quote from: chrisgixer on 05 March 2012, 19:18:32
I take It the egr circuit can't be fiddled to loop the egr out of it all together! Brake pad sensor style?
Anything is possible, but reckon it won't be that simple...

Is it an EGR fault code again?

As I would expect the light to have come on as soon as the engine was warmed up.
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TheBoy

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Re: Astra Z16SE EGR problem
« Reply #14 on: 08 March 2012, 19:04:18 »
Quote from: Jimbob on 08 March 2012, 16:19:05
Can you remember what you did in TIS when doing this update?  took me a bit to get one sorted.
May 08
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