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Thread: EGR cleaning

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    Default EGR cleaning

    Just a quick couple of Q's regarding cleaning the EGR on my 1.9 cdti 120.

    I was thinking of cleaning the EGR (inc. taking the solenoid out) as part of a service (and because its a little juddery on start for a minute which i think means the EGR is dirty). The car's done over 100k in its 4/5 year lifetime so im guessing its gonna be a little mucky. However after reading a thread, someone said that they are tempremental and don't try to fix them if there not broke, as you could cause further issues. So:

    • What parts are tempremental, am i going to cause myself problems as soon as i unplug it, or is it when you bash out the solenoid when you can cause problems?
    • If its just taking the solenoid out that could cause problems, can i just clean the body out (the big hole, dunno if thats what its called) and just spray some wd40 in the hole on top to make sure the pin is free
    • Do i need new gasket(s) to put on when/if i do it? or can the old ones be reused?


    Thanks

  2. #2
    Regular Member barney490's Avatar
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    Ok, in no particular order, yes you can use the old gaskets but new are better. A thorough clean of the egr and boost sensor with carb cleaner should be fine, no real need to strip it down on the 120. Check all the small vac hoses that come from the vacuum pump to the boost solenoid on the front panel, these have a habit of splitting underneath. You will not cause any problems unplugging anything, unless you turn the ignition on while they are unplugged, DON'T DO THAT. Other than that, have fun.

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    Vehicle : Vectra C

    Trim : SRI With a few added extras

    Engine : 1.9 CDTI 120

    Year : 06

    Default

    Did mne this morning (same engine). I followed the how-to and drilled the hole in and freed up the moving parts, didn't bother this time as the piston moves freely

    The only problem I have is rounding the bolts on the egr pipe (on the underneath of the egr valve as it sits in the engine bay), so I removed the pipe further down, just one hex bolt, then I could take off the other bolts without any problems. While you're at it, clean the boost sensor, that'll be caked in sh*te as well, so soak that in some car cleaner and be careful not to damage the orangey bit inside the cage

    I have never replaced the gaskets, but make sure everything is buttoned up tight and you'll have no problems.

    Good luck with it mate, it will definitely make a difference!

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    Default

    Cheers for the replies. Just thought i'd check before i go and do anything i might regret. So clean the egr and make sure the pin moves freely without removing the solenoid it is then for now whilst theres no lights on the dash.

    Yeah im gonna do the boost sensor too as i heard its easier to get too with the egr off anyway (haven't looked myself but hey-ho, needs to be done anyway to be sure).

    Never thought about the vacuum pipes so i'll check those too, thanks for that

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    double

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    Default

    Just another quick question, if the egr is coked up, wont the exhaust manifold be just as bad (im guessing this is what the egr is bolted too, sorry for my lack of mechanical knowledge)? Should i clean this too?

    If so, is there a guide or how do i remove it ? Im guessing cleaning it out in situe could mean pushing carbon buildup back into the engine or somewhere it shouldn't go?!

    Obviously i dont want to do anything that is going to cause problems whilst the car isn't really giving me too many issues, so this is all preventative maintenance rather than a case of doing everything i can before spending money on a repair/replacement.

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    Default

    double

  8. #8
    Regular Member barney490's Avatar
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    Default

    Don't worry too much about the manifolds, it really isn't neccessary to remove and clean. Just work on the egr/boost sensor and don't be tempted to clean the manifold in situ, you will force gunk where it could cause problems.

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    Default

    thanks barney, i'll leave it well alone for now then

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    Vehicle : 1.9CDTi(120)SRi


    Engine : 1.9DT

    Year : 05

    Mileage : 100k

    Default

    When I did mine I took the solenoid off of the egr valve, it was just held on with some torx screws, this then revealed another part of the valve that was gunked up with the black stuff, once the solenoid is off it makes it a lot easier cleaning up the spindle. Be carefully with the gasket, I ended up loosing 2 and had to drop the undershield to retrieve them! I also took the throttle assembly off and cleaned that up too while I wad there.

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