How to clean the EGR valve - different year Northstars - Page 5
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Cadillac Tech Tips - How to fix it Discussion, How to clean the EGR valve - different year Northstars in Item Specific Cadillac Discussion; thanks for the detailed pictures......
  1. #61
    slb113087 is offline Cadillac Owners Member
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    Re: How To Clean The EGR Valve

    thanks for the detailed pictures...


  2. #62
    Scorpiooooooh is offline Cadillac Owners Member
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    Re: 95 sts acceleration problem

    For a while now my car has been hesitating, just not accelerating smoothly and running rough in the 55-65 mph range. Cleaned out the EGR and she runs much better. One of the easiest fixes I've ever done on this car. The images sure helped.

  3. #63
    Rod94Concours is offline Cadillac Owners Member
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    Re: How To Clean The EGR Valve

    Such great info here. I've done the RPM/ Coolant Temp/Volts mod on my 94 Concours as well as cleaning the Throttle Body. Today we were out running errands and the car started running very rough. The cat was also getting hot. Stopped by the parts store and picked up an EGR Valve gasket and a can of Brake Cleaner. Pulled off the EGR, cleaned it and re-installed. Car is running smoother and has better throttle response than it ever had.
    A big "Thanks" to this forum and the people that contribute to it.
    A new EGR was $177-275 depending on the manufacturer. $7.49 for a can of cleaner and gasket worked out much better for my budget this week.

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  5. #64
    barrylee is offline Cadillac Owners Member
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    i cut that metal bracket for ss lines off with a dremel and replaced the wierd bolts with real bolts into the egr mount.

  6. #65
    keboone is offline Cadillac Owners Member
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    Re: How To Clean The EGR Valve

    Pictures are great but is the cleaner being sprayed into the openings???? just want to be sure . dont want to do anything stupid that 'll lead
    more $$$$.

    thanks.

  7. #66
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: How To Clean The EGR Valve

    EDIT: Referenced original Post 66 deleted. See new post 68.


    Post #66 is incorrect information. That valve is not the EGR - it is A.I.R. check valve #1, part of the blower/piping/valve system that supplies fresh air to the exhaust manifolds for a period of time at startup in order to quickly light off the catalytic converter. (A.I.R. valve #2 is next to the lower radiator hose and the blower is inside the LF fenderwell plastic liner, in front of the drive axle on the frame mounting.)

    In the Engine in #66 the EGR is electrical and is located on the right (rear) side of the water crossover casting.

    See Post #3 and ............

    Here's the 2000 - 2005 EGR location. #6. You remove it and clean the pintle and gas port.
    Attached Images

  8. #67
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: How To Clean The EGR Valve

    Here's the 2000 - 2005 AC Delco EGR from RockAuto - http://www.rockauto.com/en/moreinfo....379932&jsn=413

    Here's a picture of A.I.R. valve #1 and its mount on the right (rear) cam cover - AC Delco - from RockAuto.
    Attached Images

  9. #68
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: How To Clean The EGR Valve

    Post #66 deleted so as not to create any future confusion since this thread is about EGR valves.

  10. #69
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: How To Clean The EGR Valve

    Why not undelete it and move it to its own thread (AIR check valve cleaning: 2000 - 2005 Northstar) in Tech Tips ?

    It was nicely done with good pictures.

  11. #70
    Ranger's Avatar
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    Re: How To Clean The EGR Valve

    Sure, why not. Just be sure to edit the terminology.

  12. #71
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: How To Clean The EGR Valve

    If it's OK with you I'll mess with it later today. (Honey do............ currently in progress ..............)

    .............. Post cleaned up and moved to Tech Tips. (the Honey do !!!! is too loud to ignore ............... outta here.

    2001 Seville A.I.R. valve cleaning

  13. #72
    Ranger's Avatar
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    Re: How to clean the EGR valve - different year Northstars

    No problem Jim. Have at it.
    I would call it 2001 Seville A.I.R. check valve cleaning.

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