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Is this my Computer?

Discussion in 'The Garage' started by Esteban86K5, Apr 13, 2005.

  1. Esteban86K5

    Esteban86K5 1/2 ton status

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    I found this under the dash and I assume that it's the mini comp that controls the carb and dist on my 86. Am I correct? :confused:
    [​IMG] [​IMG]
     
  2. emoo99

    emoo99 1/2 ton status

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    if it is, then i disconnected the wrong one in my 86. The one i disconnected when i changed my carb was right behind the glovebox, had some aluminum fins on it, and had 2 plugs going into it, each plug had about 10 wires going to it.. didn't look like that??
     
  3. tipoil

    tipoil 1/2 ton status

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    black box

    it's for the wiper control(delay)
    or
    for the cruise control
    i think
     
  4. Esteban86K5

    Esteban86K5 1/2 ton status

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    Yeah I found he real one behind the glove box. Didn't have as many wires coming out of it as I thought it would have.

    THANKS!!
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Believe thats your cruise control. Over the gas pedal?
     
  6. buffblazer

    buffblazer 1/2 ton status

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    did the 86 blazers come with a computer???? i have a 86 custom deluxe and
    i did not think it had a computer i put my stereo in not to long ago and did not see any box so am i out of the loop :confused: :confused: :confused:
     
  7. Esteban86K5

    Esteban86K5 1/2 ton status

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    My 86 has a comp controlled carb and distributor. I have a plug in the front of my carb that has 2 wires coming out of it.

    This is what it looks like. It site behind the glove box just above the ac/heater stuff.

    [​IMG]
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    Ok if only one two prong plug on front of carb, it's not computer controlled. That's for the dual capacity pump.

    TPS (three prong plug on drivers side front of carb) indicates the CCC system. CCC was CA only (on trucks, mandatory on cars '81+) as far as I can tell.

    That picture is of ESC, which is spark control. 305, right?

    So yes, '86 could come with an actual ECM, but it's fairly uncommon. Only "computer" stuff you are likely to see is the cruise that was posted here, the ESC "computer" that is posted here, or an ECM, which looks just like the ESC but fills that entire plastic "carrier" and has many more wires running to it.
     
  9. Esteban86K5

    Esteban86K5 1/2 ton status

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    SO what your saying is that that isn't a computer? I knew it wasn't an actual "computer" like the fi trucks. So what does it control?

    It goes to my dist. but I haven't looked at where else it goes.

    Thanks for the help.

    And it WAS a 305 at one point.
     
  10. dyeager535

    dyeager535 1 ton status Premium Member

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    It's tied into the knock sensor, dist., and perhaps something like engine temp, etc. All part of ESC, thats it.

    But ESC's sole purpose is to keep that "high compression" 305 from destroying itself by retarding timing if knock is detected.

    Technically it's probably a computer, it's just not one that does much.

    I'm not sure what the qualifications were to "get" ESC. I thought all truck 305's that were 9.2:1 ('80+ or so) would have that, but then again, I don't recall ever seeing it on my '83. It was often blamed (whether rightly so or not) for driveability issues, and ever since it was introduced has been pretty commonly removed/disabled. So it very well may have been "stock" on all high compression 305's, but removed on ones that you don't see it in now. Dunno on that though.
     
  11. Esteban86K5

    Esteban86K5 1/2 ton status

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    SO I can remove it without a problem?
     
  12. Esteban86K5

    Esteban86K5 1/2 ton status

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    Also what about this dual capacity pump? What do the wires do for that?

    Thanks for your help. :D
     
  13. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    The first picture is the control module for the cruise control. You can safely remove that. I've had mine out for years and haven't had a problem, other than driving across country with no f'n cruise. The second pic you posted is a computer.
     
  14. dyeager535

    dyeager535 1 ton status Premium Member

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    Yes you can remove the ESC stuff, only place that will probably hurt you for that is visual emissions.

    Old post:

    "Read the '86 preliminary manual last night.

    That's a dual capacity pump. It's purpose is to provide extra fuel for cold engine idle-cruise transition. At 170* the solenoid energizes, eliminating the supply of additional fuel used for the cold temp transition period. If it were me I'd leave it alone, it hurts nothing, disconnected, it would unnecessarily hurt mileage."

    I'd probably look at getting another Q-jet core instead of disconnecting/fixing one of these.
     
  15. beater_k20

    beater_k20 Banned

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    basically makes it run rich until you've warmed the engine up sufficiently, then goes to normal. leave it there.

    dyeager... you're missing one point... HE'S IN CALIFORNIA... the likelihood of his truck actually having the CCC setup is VERY good.
     
  16. beater_k20

    beater_k20 Banned

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    he's in Cali, better leave it there, or it wont pass... :rolleyes:
     
  17. dyeager535

    dyeager535 1 ton status Premium Member

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    CCC doesn't use the ESC. It's one or the other, not both.

    I was assuming by his avatar that he's not worried about emissions, perhaps I'm wrong.

    Since I have to quote myself it seems :rolleyes:

     
  18. beater_k20

    beater_k20 Banned

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    [​IMG]

    maybe i'm nuts, but i think i see a license plate. that means it probably has to pass emissions.
     
  19. Triaged

    Triaged 1/2 ton status

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    The reason he is tearing into everything is that he is swapping all his stuff into a 73 K5 so that he won't have to have a smog check.
     
  20. dyeager535

    dyeager535 1 ton status Premium Member

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    It may have to, thats why for the third (and last) time I'm repeating "only place that will probably hurt you for that is visual emissions."
     

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