egr valve check

**dazcdti** · 25th November 2010, 21:52

Can anybody tell me how you check if an egr valve needs changing i have cleaned mine every 6 months since ive owned it and its always very sooty i also have a judder if im on the motorway and then go to over take something so planting my foot and get juddering could this be egr related or something else. I do over 100 miles a day to work and back, car has done 82k and is a 1.9 cdti 120. Hope someone can shed light on this for me.

**lesj** · 25th November 2010, 23:35

Hi Daz,
Could be the throttle body cct board needing a resolder; could be a sticky EGR have you cleaned the solenoid?

**rushy** · 25th November 2010, 23:37

What are the markings on the plug mate?

**dazcdti** · 26th November 2010, 10:12

hi what is a cct board? how do i clean the solenoid? and what markings on which plug am i looking for? thank you for getting back to me

**lesj** · 26th November 2010, 18:15

Hi Daz,
Within the throttle body (large assy bolted on to inlet manifold, pax side) there is a circuit (cct) board, the solder joints can break.
The EGR solenoid can be cleaned by un bolting it it from the end of the EGR valve, then using a drill (3-5mm), makeing a hole in the plug end, within which you can insert a drift to knock the solenoid assy out. This process is explained within the Vec C website.

http://www.vectra-c.com/forum/showth...45#post1338145 (Throttle body)

**dazcdti** · 26th November 2010, 23:07

Thanks mate ill look into both of those and see how it goes

**the-wizard** · 27th November 2010, 03:17

As you do 100 miles a day if your ever this way i can give you some pointers!, close to j10 m42.

**dazcdti** · 27th November 2010, 19:28

hi wizard i used to live in tamworth how near to j10 are you? and i will defo come and get some advice off you am in tamworth most weekends infact are there tomorrow as parents live in tamworth your help would be most appreciated

**the-wizard** · 28th November 2010, 14:09

Could be throttle body related, if your cleaning the egr regular it should be ok, but a FULL clean as shown in the how 2 is a good idea, also have you thought about the semi blanking gaskets, this will reduce the soot down to nill virtually. pm'd.