BBA-Reman Forums



Vectra 2.0 DTI P0400 Error, EGR Valve

Posted By Apprentice 4/3/2008 11:25:44 AM
Add to Favorites0
Author Message
Apprentice
 Posted 4/3/2008 11:25:44 AM
Forum Tea Boy

Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)

Group: Forum Members
Last Active: 11/12/2014 6:11:33 AM
Posts: 45, Visits: 497
75
First I would like to say I have been looking for a while for a forum that I can get involved with, after a lot of looking, I have decided to join you guys as you all seem helpful & knowledeable!

Its an 04 engine Y20DTH

I have a customers Vectra with a P0400 error, scanner says it is EGR, have checked all hoses, cleaned all the pipes out, EGR motor seems to be working ok as do the solenoids. Cleaned all the pipes and vacuum checked them all.

Tested the airflow meter all voltages OK and the scope pattern seems perfect.

Basically the problem is the engine speed drops and there is no reponse from the accellerator pedal, stop the engine and it restarts and all is fine until it does it agan.

I have noticed that when standing still and slowly pushing the pedal that as the revs get to about 2400 that there seems to be hesitation and then it goes throught it and seems OK.

Any Ideas?

Thanks

Eric

  

Apprentice
 Posted 4/3/2008 2:02:48 PM
Forum Tea Boy

Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)

Group: Forum Members
Last Active: 11/12/2014 6:11:33 AM
Posts: 45, Visits: 497
75
As a follow up, checked vacuum, at the pump it is about 27psi, at the y piece by the solenoids (near battery) it is only 12psi, the egr solenoid is leaking off through the bottom, is this normal?

If not what could this be, solenoid, vacuum pump or what?

Need to get this sorted tomorrow as customer is going to France in it at the weekend!!

Come on guys, help me out with this.

Chris Venning
 Posted 4/3/2008 2:36:30 PM
Forum Master Technician

Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)

Group: Forum Members
Last Active: 12/23/2011 9:00:24 PM
Posts: 2,857, Visits: 6,857
Hello Eric and welcome to the Forum.

I'm not totally up to speed on these, but I have seen numerous posts where it has been recommended to swop the solenoids around, as I believe they are both the same. That should give you a comparison to work from.

It can't be the vacuum pump if it's reading 27''mercury, I guess you mean, and at the tee piece 12, then you have a leak, so I would imagine the solenoid leaking is your problem.

No doubt someone will be along later who knows for sure.

Cheers Chris

I could give up Stella, but I'm no quitter. Beer Drinker 

4/3/2008 2:40:57 PM by Chris Venning
wor-mate
 Posted 4/3/2008 3:30:37 PM
Forum Technician

Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)Forum Technician - (703 reputation)

Group: Forum Members
Last Active: Yesterday @ 1:36:10 PM
Posts: 666, Visits: 2,133
703
I think its normal for the valve to run at a slightly reduced vacumn

The valves tend to flutter/click even when they are ok

Most times you have to bite the bullet and buy a new valve {very expensive and poor quality for your money], but before you splash out

Remove and clean the egr valve and the manifold where it attaches , they get very dirty and tend to block the part where the gas flows.

Check the egr valve travel with your mity vac and that the diaphrams not leaking

T into the supply pipe to the egr and check - normaly the valve gives slight egr at idle, more up to 1/4 throttle, then non when you put your throttle right down

Apprentice
 Posted 4/3/2008 4:09:26 PM
Forum Tea Boy

Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)

Group: Forum Members
Last Active: 11/12/2014 6:11:33 AM
Posts: 45, Visits: 497
75
Thanks guys/

After reading all the posts I find anywhere on this, I am still confused about what should be hapening with these parts, complicated more by what the parts are called at diferent times.

Can anyone clarify what does what?

My understanding is that the EGR is actually a motor operated electrically by the ECU, the two solenoids by the battery - one controls the actuator and through that a flap that opens and closes the flow of air from the connecting pipe from the intercooler, into the manifold and engine - not too sure what this flap is for, any Ideas? This flap flutters and when the problem with lack of throttle occurs this is closed

cant remember what the oter one does.

Can anyone help with how this all works?

I have removed the EGR motor, cleaned all the muck from around the valve portion and inside the manifold.

Which part is it that I should be focusing on, the EGR Motor/Valve connected to the manifold or the vacuum solenoids, by the battery?

Chris Venning
 Posted 4/3/2008 4:33:52 PM
Forum Master Technician

Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)Forum Master Technician - (2,915 reputation)

Group: Forum Members
Last Active: 12/23/2011 9:00:24 PM
Posts: 2,857, Visits: 6,857
A little light reading for you:

http://en.wikipedia.org/wiki/Exhaust_gas_recirculation

I could give up Stella, but I'm no quitter. Beer Drinker 

Apprentice
 Posted 4/3/2008 4:41:06 PM
Forum Tea Boy

Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)

Group: Forum Members
Last Active: 11/12/2014 6:11:33 AM
Posts: 45, Visits: 497
75
Chris, thanks for that, i do understand the principles of EGR, I was asking for some clarification on how this particular setup worked.

Any Ideas?

dano
 Posted 4/3/2008 5:05:03 PM
Forum Tea Boy

Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)Forum Tea Boy - (32 reputation)

Group: Forum Members
Last Active: 4/26/2013 5:14:48 AM
Posts: 31, Visits: 82
32
had this problem with a vauxhall zafira 20 dti and with lots of testing etc in the end i replaced the egr valve

a new one from what i can remember was bout £80 from vauxhall dealer

and i never saw the car again with that problem.

Cool DAPPER!!!!

Apprentice
 Posted 4/3/2008 5:16:21 PM
Forum Tea Boy

Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)Forum Tea Boy - (75 reputation)

Group: Forum Members
Last Active: 11/12/2014 6:11:33 AM
Posts: 45, Visits: 497
75
Apart from checking the electical connections is there any way to check that the EGR Motor/Valve is working properly?

I have seen lots of other posts on other forums that say it is always vacuum leaks, solenoids or MAF sensor that causes this error, does not make sense to me, any comments on this?

Thanks for all the help so far

Any ideas on where I can get info on this particular system and under what conditions all the solenoids opperate etc?

topbloke
 Posted 4/3/2008 6:07:17 PM
Forum Technician

Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)Forum Technician - (932 reputation)

Group: Advanced Members
Last Active: 10/9/2012 5:02:22 PM
Posts: 897, Visits: 5,372
932
generally p0400 is normally a vac issue, airleak,pump u s, or low oil level,it would normally give a loss of power but never seen it give total loss of response to the throttle, the system works three different things the turbo waste gate, the egr (domed unit on top, above flaps) and the flap accutuator itself, assuming you have a mity vac then all of the above items can be tested for leaks and actuation, if you have access to live data is the throttle pot reading okay ie dead spots, they should read less than 0.5 v idle 1.5 wot and 1.0v idle 3.0wot  

Reading This Topic

Expand / Collapse

Back To Top