Close



Results 1 to 15 of 15
  1. #1
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default EXH light on non feedback carb, CA spec Bcode I6

    For a while, this has bugged me.

    Since a B and X code O2 sensor I6 3.3 Liter isn't a feedback carburettor, why is there a red EXH dash light?

    Name:  IMG_62491.jpg
Views: 184
Size:  121.7 KB


    Its not MCU, EEC II or III like the 2.3's and 4.2's were for CA that year.

    What purpose does the heated O2 sensor and its white /black stripe, yellow/ black stripe heat insulated wires below have

    Name:  IMG_62581.jpg
Views: 550
Size:  60.9 KB

    asside from controlling the air pump TAB system.

    Is it used as an altiude compensator?

    The only other adjustment, and a non feedback one, is the orange null knob for idle speed solenoid setting beside the valve cover by the throttle cable.

    Name:  IMG_62571.jpg
Views: 555
Size:  71.2 KB



    The two wire heated O2 sensor sits under the primary thermal cat, and is it only used for AIR operation, or is it used as an altiude compensating device.

    What gives with the non feedback carb I6, with a feedback AIR, dual catalyser exhaust system?

  2. #2

    Default

    That's a new one for me? I've never seen anything like it before.
    Cheers!

    Mike (TopGear85)



    Have:
    85 Saleen #73-GT,2R,TuTone,Cruise,Pos,5spd,Charcoal
    ***August 2015 ROTM Winner!***

    Had:
    79PC-San Jose #2890
    86GT-9L,TuTone,5spd,T-Tops,Sand Beige
    86GT-9L,TuTone,5spd,T-Tops,Charcoal
    90LX-Oxford Wht,5spd,Sunroof,5.0 Hatchback
    90GT-Oxford Wht,5spd

  3. #3
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    Hugh?

    Terrymwalshes is like mine, CA spec, 1981, ex SanJose CA plant. But it doesn't have the red EXH light?




    Dang, now I'll have to PM Terry, and look at all my old B and X code photo's.

  4. #4
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    Sent this to TMW

    Thanks in advance if you can help, since most of the old log head stuff is removed, you might be able to help a little.


    I guess I assumed too much.


    Terry, do you have an EXH light on the left side of the dash on your WBM. Its found on my non feedback carb, CA spec B code I6?


    What about a two wire O2 sensor. According to your Emissions equipment tag you should at least have a white covered twin wire O2 sensor and an idle adjustment null knob.

    I guess mine might be a little different.

    See http://vb.foureyedpride.com/showthre...35#post1711535


    Kindest wishes, Dean from Dunedin NZ

  5. #5
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    Well, the twin wire O2 fitted on to the primary cat B aNd X codes

    Name:  49StatesreplacementprimarycatforTBANDXCODEI6.jpg
Views: 423
Size:  48.4 KB

    The idl adjustment is commonto all 81-83 engines.


    It's just the O2 sensor and EXH lightI'm confused about...

  6. #6
    FEP Member Foxy Capri's Avatar
    Join Date
    Sep 2006
    Location
    Melbourne, Australia
    Posts
    182

    Default

    Hi Dean. I don't have an EXH light but I think mine had the O2 sensor, I'll check in the morning in my box of left over bits & pieces! I attach my Emission Control label from under the bonnet, that's hood, if that helps at all.
    Name:  EmissionControlInfo.jpg
Views: 368
Size:  97.3 KB
    aka Terry M Walsh
    Downunder in Melbourne, Australia

    1981 Mercury Capri, 'White' Black Magic, 200-2V/C4
    1983 Ford Capri, 2.8i, 5-spd

  7. #7
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    Oh, thankyou Terry. Wow!


    From your birthday back in 11-09-2012!

    http://vb.foureyedpride.com/showthre...Window-Sticker
    Quote Originally Posted by xctasy View Post
    What emissions lable do you have, it lookes the same as mine

    Zackly the same as yours!

    Snap! E1BE 9C485-CA, Engine catagory AM, DCK, same IJ 204 AA engine decal, everything.

    Name:  Deans1981AMDCKVECILabelMustang025r-1.jpg
Views: 360
Size:  69.4 KB


    The O2 sensor isn't a vac decel item.


    And I see that not everyone got the O2 sensor.

    Here's a Wedgewodd Blue Mercury Capri 3.3 1981 engine, it doesn't have it. Its emissions package is totalyy different, with its AIR tube system different. I seam to remeber it was a Collorado car, found in the snow outside a barn by a Ford Six member baack in 2003 or so. In 1981, there were a raft of changes between manual, auto, and 49 states cars.

    Name:  1981200exhaust01_original.jpg
Views: 162
Size:  198.8 KB

    Despite the engine being an in line, the exhaust manifold curls down under a cast in intake, so its hard to see everything, with the AIR system and catalytic converter cover having to be removed before you can see anything.

    I took the O2 sensor out June 2011, but didn't get any photos saved, the SD card was wiped. I do have other photos though, including the Cat part number

    Name:  IMG_6818.jpg
Views: 162
Size:  111.7 KB

    Name:  IMG_6817-1.jpg
Views: 542
Size:  87.8 KB

    Name:  IMG_6816-1.jpg
Views: 162
Size:  41.3 KB

    E1 BE -5E211
    5G D8--0 256

  8. #8
    FEP Member Foxy Capri's Avatar
    Join Date
    Sep 2006
    Location
    Melbourne, Australia
    Posts
    182

    Default

    G'day Dean, you'll have to excuse my ignorance, but I have no bloody idea what all that emissions stuff is or what it does. I'm an old school mechanic, plugs, points and an oil change, that's for me!

    Anyway, attached are 2 pics of a lot of the rejected stuff off my I6 200, along with a close up of the item I thought that you were talking about. Hope all this helps, and I definitely don't have the EXH light. Cheers, Terry
    Name:  rejectedstuff.jpg
Views: 1131
Size:  88.7 KB Name:  O2Sensor.jpg
Views: 1312
Size:  109.4 KB
    aka Terry M Walsh
    Downunder in Melbourne, Australia

    1981 Mercury Capri, 'White' Black Magic, 200-2V/C4
    1983 Ford Capri, 2.8i, 5-spd

  9. #9
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    Aha, your stuff is the carby control idle and air cleaner thermatic and air pump stuff.

    Just like mine. I'll bet you were happy to see that stuff go! That is about 30%of the emissions gear right there, Terry

    I found my lost six pack of catalyst, heat shield and O2 sensor pictures! The cat is a big old thing...

    "IMG_6861"

    "IMG_7222"

    "IMG_7223"

    "IMG_7224"

    "IMG_7227"

    "IMG_7228"



    The O2 sensor has two wire, white /black stripe, yellow/ black stripe link-up, with 2-3/8" probe into the catalyst distance, its mounts at about 3-1/2", and about 4 -3/4" long tip to outer heat wrap. Cant remember the thread, may be a spark plug type.

  10. #10

    Default

    What I see in those photos is a thermocouple exhaust temperature sensor, very likely aftermarket.
    Not sure if that would have been added to satisfy some import requirement, or just because some
    previous owner was concerned about exhaust temperatures, but that probe, and the "EXH" red light
    on the dash, do not look at all factory to me.
    Cheers,
    Jeff Cook

    '85 GT Hatch, 5-speed T-Top, Eibachs, Konis, & ARE 5-Spokes ... '85 GT Vert, CFI/AOD, all factory...
    '79 Fairmont StaWag, 5.0, 62K original miles ... '04 Azure Blue 40th Anny Mach 1, 37K original miles...
    2012 F150 S-Crew 4x4 5.0 "Blue Coyote"... 65 coupe, 289 auto, Pony interior ... '67 coupe 6-cyl 4-speed ...
    '68 Vert, Mexican block 307 4-speed... '71 Datsun 510 ...
    And a 1-of-328 Deep Blue Pearl 2003 Marauder 4.6 DOHC, J-Mod, 4.10s and Lidio tune

  11. #11
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    Quote Originally Posted by JACook View Post
    What I see in those photos is a thermocouple exhaust temperature sensor, very likely aftermarket.
    Not sure if that would have been added to satisfy some import requirement, or just because some
    previous owner was concerned about exhaust temperatures, but that probe, and the "EXH" red light
    on the dash, do not look at all factory to me.



    Thanks everyone, JACook, terrymwalsh, Mike (TopGear85).

    I guess its a later added tell tale.

    I can hook it up to my data logger, I just thought it was factory, I thought it was period Fox.


    Shows you how little I know.

  12. #12
    FEP Super Member NAVYCAT's Avatar
    Join Date
    Jul 2004
    Location
    Montebello, CA
    Posts
    3,435

    Default

    O2 sensors are only used with fuel injection OBD1/OBD2 1995 was the first time there were needed so before that they were not used
    2017 Ford Explorer Sport (DD) 1986 Capri 5.0 Silver/Red
    1969 Falcon XW GTHO coupe (SOLD) went to Australia
    Past 4 eyes-
    4th. 1981 Capri "White" Black Magic I6
    3rd. 1984 Capri RS V8 Black/grey
    2nd. 1984 Capri RS V8 White/red
    1st. 1984 SVO Grey/grey (traded it for a worn out 1970 BOSS 302)
    Both '84 Capri's vin# were 10 away from each other
    U.S. NAVY 1980-2009

  13. #13
    FEP Super Member NAVYCAT's Avatar
    Join Date
    Jul 2004
    Location
    Montebello, CA
    Posts
    3,435

    Default

    Quote Originally Posted by JACook View Post
    What I see in those photos is a thermocouple exhaust temperature sensor, very likely aftermarket.
    Not sure if that would have been added to satisfy some import requirement, or just because some
    previous owner was concerned about exhaust temperatures, but that probe, and the "EXH" red light
    on the dash, do not look at all factory to me.
    that light might be part of some kind of tow package
    2017 Ford Explorer Sport (DD) 1986 Capri 5.0 Silver/Red
    1969 Falcon XW GTHO coupe (SOLD) went to Australia
    Past 4 eyes-
    4th. 1981 Capri "White" Black Magic I6
    3rd. 1984 Capri RS V8 Black/grey
    2nd. 1984 Capri RS V8 White/red
    1st. 1984 SVO Grey/grey (traded it for a worn out 1970 BOSS 302)
    Both '84 Capri's vin# were 10 away from each other
    U.S. NAVY 1980-2009

  14. #14
    FEP Super Member NAVYCAT's Avatar
    Join Date
    Jul 2004
    Location
    Montebello, CA
    Posts
    3,435

    Default

    Quote Originally Posted by xctasy View Post
    Aha, your stuff is the carby control idle and air cleaner thermatic and air pump stuff.

    Just like mine. I'll bet you were happy to see that stuff go! That is about 30%of the emissions gear right there, Terry

    I found my lost six pack of catalyst, heat shield and O2 sensor pictures! The cat is a big old thing...

    "IMG_6861"

    "IMG_7222"

    "IMG_7223"

    "IMG_7224"

    "IMG_7227"

    "IMG_7228"



    The O2 sensor has two wire, white /black stripe, yellow/ black stripe link-up, with 2-3/8" probe into the catalyst distance, its mounts at about 3-1/2", and about 4 -3/4" long tip to outer heat wrap. Cant remember the thread, may be a spark plug type.
    picture 27 and 28 is not an O2 sensor, its a thermo switch to protect the exhaust. those wires go to that light, possible tow package was installed on the car
    2017 Ford Explorer Sport (DD) 1986 Capri 5.0 Silver/Red
    1969 Falcon XW GTHO coupe (SOLD) went to Australia
    Past 4 eyes-
    4th. 1981 Capri "White" Black Magic I6
    3rd. 1984 Capri RS V8 Black/grey
    2nd. 1984 Capri RS V8 White/red
    1st. 1984 SVO Grey/grey (traded it for a worn out 1970 BOSS 302)
    Both '84 Capri's vin# were 10 away from each other
    U.S. NAVY 1980-2009

  15. #15
    FEP Super Member xctasy's Avatar
    Join Date
    Jun 2012
    Location
    Dunedin 9011, New Zealand, South Pacific
    Posts
    3,961

    Default

    I thought this was a tow pack....http://www.bestracingtips.com/fun-st...irmont-futura/

    Tell me more if you know. It's hard to imagine 91 hp taking out a football cat, but I've heard all sorts of folklre about the ceramic grid over heating and going on fire and suchlike, never believed it though.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •