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  1. #1

    Default What should my EGR be hooked to?

    OK, my engine compartment is a mess. No vacuum is hooked up, etc, etc.

    I have an aftermarket Holley 4v carb that work allright for right now. It gets the car started and idling after "a fashion" and so I just want to get important things hooked up so I pass inspection (NC).

    When I got the car back, the EGR's snout was busted off. I have no idea if this was done during reassembly or if its always been busted off. So I put an EGR valve on that I had with a good snout.

    #1 Is a disconnected EGR bad? Seems that for 86+ cars it is...how about carbed cars?

    #2 Where should it be hooked to? The best guess from the Ford Service Manual is that it goes to to some tree on the intake manifold? Is there any valve that needs to go between the EGR and manifold?

    I'll try and get some pics if necessary....but actually if anyone has any pics of how their EGR is hooked up that would help. There are never any shots of that area back there as it is tough to get that angle and there is so much stuff in the way I can't quite see where the lines go.

    -Mike

  2. #2
    FEP Power Member slickshift's Avatar
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    Default Re: What should my EGR be hooked to?

    Quote Originally Posted by negusm
    #1 Is a disconnected EGR bad? Seems that for 86+ cars it is...how about carbed cars?

    #2 Where should it be hooked to? The best guess from the Ford Service Manual is that it goes to to some tree on the intake manifold? Is there any valve that needs to go between the EGR and manifold?
    Introducing exhaust gases into the manifold lowers the temp in the combustion chamber to lower NOx emissions
    It's a good thing, but comes at the expense of displacing some oxygen
    Really I don't think there is any bennies to putting a block-off plate on a daily driver

    As to what's controlling the valve, if you have no electronic feedback or EEC-III or anything, then I don't believe you have a solenoid or anything on that vacuum line

    Do you still have your VECI label?
    That'll tell you for sure
    '86 GT that technically doesn't exist
    With Accessory Reserve Load Springs
    Accessory Reserve Load Springs...Whooo Hooo!

  3. #3

    Default Re: What should my EGR be hooked to?

    Quote Originally Posted by slickshift
    Do you still have your VECI label?
    That'll tell you for sure
    Yeah right.

    The "valve" I refer to looks like a circular plastic thing that just goes inline with the vacuum hose. It is not connected to any wires or anything. I would imagine it allows air to go only one way. So do I need one? I will look again at the vacuum diagrams...

    -Mike

  4. #4
    FEP Power Member slickshift's Avatar
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    Default Re: What should my EGR be hooked to?

    Quote Originally Posted by negusm
    Quote Originally Posted by slickshift
    Do you still have your VECI label?
    That'll tell you for sure
    Yeah right.

    ...sorry
    '86 GT that technically doesn't exist
    With Accessory Reserve Load Springs
    Accessory Reserve Load Springs...Whooo Hooo!

  5. #5
    FEP Power Member slickshift's Avatar
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    Oh those stupid round do-hickey thingies?
    Jeez I hate those things
    I see those in my sleep
    Every carb I've worked on this summer has them
    And they are not always in the VECI either...grrrr....

    ....but I don't feel confident in my memory to say yes, you need it
    It's been a while since I've worked on a 5.0 carb
    '86 GT that technically doesn't exist
    With Accessory Reserve Load Springs
    Accessory Reserve Load Springs...Whooo Hooo!

  6. #6
    FEP Power Member slickshift's Avatar
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    Default

    Quote Originally Posted by slickshift
    Oh those stupid round do-hickey thingies?
    Vacuum Check Valve
    '86 GT that technically doesn't exist
    With Accessory Reserve Load Springs
    Accessory Reserve Load Springs...Whooo Hooo!

  7. #7

    Default

    Quote Originally Posted by slickshift
    Quote Originally Posted by slickshift
    Oh those stupid round do-hickey thingies?
    Vacuum Check Valve
    And what do they do exactly?

    -Mike

  8. #8

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    Quote Originally Posted by negusm
    Quote Originally Posted by slickshift
    Quote Originally Posted by slickshift
    Oh those stupid round do-hickey thingies?
    Vacuum Check Valve
    And what do they do exactly?

    -Mike
    Check valves merely limit airflow to one direction. They are the vacuum equivalent of a diode.

    As I recall, there is a spacer plate under the carb that the EGR valve bolts on to. I don't remember where the vacuum connections go, but I bet they go to a certain port on the carb or something. Do you have access to Alldata? My public library has it, perhaps yours does also. Alldata should have your vacuum routing diagram. If you can't get ahold of one let me know and I'll see if I can print one up from Alldata at my friends shop and scan it.
    2R '85 GT 'vert - VIN code M fuel injected 5.0 HO

    The greatest discovery of my generation is that man can alter his life simply by altering his attitude of mind.
    - William James

  9. #9

    Default

    1985 Mustang/Capri 49 state VECI, for your viewing pleasure. Courtesy of autozone.com.



    Quote Originally Posted by negusm
    #2 Where should it be hooked to? The best guess from the Ford Service Manual is that it goes to to some tree on the intake manifold? Is there any valve that needs to go between the EGR and manifold?
    EGR Repair Info, with diagrams

    clicky here
    2R '85 GT 'vert - VIN code M fuel injected 5.0 HO

    The greatest discovery of my generation is that man can alter his life simply by altering his attitude of mind.
    - William James

  10. #10
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    Default

    The following is off of my 83 but probably not significantly different than an 85.

    There is a temperature activated vacume switch on the back of the manifold that the eger connects to.

    1983 Mustang GT

  11. #11

    Default

    Quote Originally Posted by frankiesaysrelax
    OK, that looks promising. I think I'll try and hook it up like that. Right now my Carb's "spark port" is routed directly to the vacuum advance on the distributor. I'll have to "T" it off and send it to the intake manifold too I guess.

    -Mike

  12. #12

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    Quote Originally Posted by negusm
    Right now my Carb's "spark port" is routed directly to the vacuum advance on the distributor. I'll have to "T" it off and send it to the intake manifold too I guess.
    Sounds like a plan.
    2R '85 GT 'vert - VIN code M fuel injected 5.0 HO

    The greatest discovery of my generation is that man can alter his life simply by altering his attitude of mind.
    - William James

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