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Can i use a computer controlled Q-jet w/out an ECM?

Discussion in 'The Garage' started by ajbirken, Jan 8, 2004.

  1. ajbirken

    ajbirken Registered Member

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    I've got a Q-jet that had the computer controlled primaries etc. can this carb be used in a non-compterized vehicle. I have a 1974 J10 PU with a 350SBC from a 1970 chevy PU.

    Thanks

    adam
     
  2. xflatrater

    xflatrater Registered Member

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    The carb will run at full rich without the computer, poor idle, load up the plugs and must likely damage the engine from oil contamination.
     
  3. beater_k20

    beater_k20 Banned

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    [ QUOTE ]
    The carb will run at full rich without the computer, poor idle, load up the plugs and must likely damage the engine from oil contamination.

    [/ QUOTE ]

    no....... the "computer controlled" QJet is not actually computer controlled. it has one 2 wire connector, and that connector gets 12v from the fuse box, the other side goes to a coolant temp sensor in the water neck. no computer required.
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    You are dead wrong. You are a member, you can research it. Don't bother going back more than 2 or 3 weeks.

    Yes a CCC q-jet can be run without the computer, but its failure mode is full rich as was said. I got 10MPG out of a CCC carb on a 307 olds, when it should have been in the high teens low 20's.
     
  5. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    [ QUOTE ]
    The carb will run at full rich without the computer, poor idle, load up the plugs and must likely damage the engine from oil contamination.

    [/ QUOTE ]

    no....... the "computer controlled" QJet is not actually computer controlled. it has one 2 wire connector, and that connector gets 12v from the fuse box, the other side goes to a coolant temp sensor in the water neck. no computer required.

    [/ QUOTE ]

    There is indeed a computer controlled carburator for California emission trucks.

    For 49 state trucks there is a cold idle enrichment solenoid which is what you might be thinking of, but there is indeed a CCC for California trucks.
     
  6. ajbirken

    ajbirken Registered Member

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    I am a dumbass. This carb appears to be from an 84 Olds the PN is 17084258. I bought first asked questions later. Any advice other than buy a non-CCC Q-jet?

    Thanks
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    Not really. Buy another one and see if you can't sell the one you got. Don't throw it away, there are a few of us still (intending) to play around with the CCC carbs, but *I* only buy used Q-jets for around $5, so that may give you an idea how much you may get out of it. Hope you didn't pay much more.

    I know wrecking yards would charge a lot more, perhaps you could Ebay it.
     
  8. beater_k20

    beater_k20 Banned

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    anybody got any pics of this CCC carb? how about some more info? i've never seen such a thing before.
     
  9. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    My old CCC carb, intake, and distributer is in the garage but I use my girlfriends cam to take all of my pics. I will try and get a pic of it for you if I can borrow her cam.

    P.S. there really isn't much to see, it looks just like a regulaer Q-jet just with a spot for a plug.
     
  10. R72K5

    R72K5 Banned

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    bottom answer is no, there is a control module and the entire system is called electronic spark timing and began in 1980, and mostly sene on 305 engines throughout the 80s, very common thing, i have sene some with two plugs on the carb, one with the two wires and another with an extra wire, this was on an 86 c-10 with 305, the extra wire ran to temp switch in thermostat housing
     
  11. dyeager535

    dyeager535 1 ton status Premium Member

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    E4MED truck carb

    Parts 265 and 210 indicate a computer control carb. Mix control solenoid (with dual capacity pump) and TPS, respectively.
     

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