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  1. usar17

    Carb to TBI

    awesome thanks. I hate sounding like a broken record through all this...but: The fuel tank on my truck is new, I swapped out the 16 gallon for a 20 gallon last summer. It also has a new sending unit, but that doesn't concern me as much. How bad would it be to drop the sending unit/pump from...
  2. usar17

    Carb to TBI

    So I just need to check in the morning if the throttle plate on the tbi has a kickdown provision. If not? And will the ecm throw a code bc it isn't seeing the th400? and where would be a good point to tee in the transmission vac switch?
  3. usar17

    Carb to TBI

    ya i just turned the page and saw that. I have the Haynes Manual too. What has me all confused it: 1. My 700r4 has 4 wire pin to the driver side, which i assume is for the lock up vacuum switches. My 700r4 uses a TV cable to kick down the tranny. 2. 87 tranny has 1 wire to the driverside...
  4. usar17

    Carb to TBI

    Wait....what do I need? I was going to maintain the vacuum controlled lock up. But I'm looking at this scratching my head now.....what kicks down the tranny? My 85 uses a TV cable.
  5. usar17

    Carb to TBI

    any clue which wire im looking for? and any clue on the transmission questions?
  6. usar17

    Carb to TBI

    :whymewhyme: ugh. I wish i owned a garage hmm what other question did i have... -I have A/C in my current truck, but it isn't factory. (don't ask) I currently just spliced a idle seloniod into the wire for the A/C Clutch. What would I need to do for the TBI? is there already one on there...
  7. usar17

    Carb to TBI

    thanks, I thought so. I'm half frozen today. It's very cold and very windy this week. Which brings me to my next question...I really don't feel like pulling this tank and fuel lines haha. Is there a cheap alternative to hold me till warmer weather when i can swap the tank and sending unit...
  8. usar17

    Carb to TBI

    Ok I'm having a brain fart.... this the position sensor?
  9. usar17

    Carb to TBI

    P/N??? i have a few questions. The Brown w/White stripe wire that goes from the ECM to the instrument Cluster: I'm assuming that is the Check Engine Light...If so can i cut that and run it to a grounded indicator lamp? ECM1 & ECMB Fuses: Are they constant hot or ignition hot? And Where do...
  10. usar17

    Carb to TBI

    not the 6 wires that go from the ECM to behind the Cluster? ECM->VSS,ALDL, Fuse Block, Inst Cluster, Transmission Position Sensor
  11. usar17

    Carb to TBI

    Well I spent the day pulling wires out of the donor.....what fun that was :/ I left the ecm to engine wires connected for now. So currently spread across my work bench is all the interior wiring. I started at the ecm wiring harness where it had a 6 pin connector just off the ecm itself. I...
  12. usar17

    Carb to TBI

    Hmmmm....lol can u try again.
  13. usar17

    Carb to TBI

    I hate to be a pain. But which relay is the pump relay? Can I just unplug the harness at the tank and run 12v to one of those pin? Im not referring directly to the sending unit pin, but the 6" long harness attached to the sending unit Like I said, bed is off it so I can easily just hit the...
  14. usar17

    Carb to TBI

    Can I jump a little 12v power to a lead to test it?
  15. usar17

    Carb to TBI

    after thinking about it more... I'm guessing the fuel pump is wired through the harness not straight to a hot. And is there a way to test the current 87 fuel pump/sending unit? The bed is off the truck so i can easily remove it. I started labeling and disconnecting the wiring harness...
  16. usar17

    Carb to TBI

    Ill stick with vacuum then to keep it cheaper. Any suggestions on pumps? And is that just wired up for ignition hot. Ive swapped a tank once....don't feel up to doing that again.
  17. usar17

    Carb to TBI

    Chip? So what all do i need to buy? Gasket Set, .....?
  18. usar17

    Carb to TBI

    So what do I do with the 700r4 plug? Cut and splice it in replace of the 400s on the tbi harness?
  19. usar17

    Carb to TBI

    The 400 is shot. That's why I was given the truck for the motor.
  20. usar17

    Carb to TBI

    Ok which seals and gaskets do u recommend changing while the motor is out? And which wires and plugs? I'm not very knowledgeable on the workings of transmissions. All I know off the top of my head is that there is a kick down linkage on the throttle and a vacuum sensor on the fire wall. Other...
  21. usar17

    Carb to TBI

    Any problems ill encounter with the transmission
  22. usar17

    Carb to TBI

    Transmission unknown. Im not properly dressed to crawl under this truck now in the snow. But here is a photo of the pan
  23. usar17

    Carb to TBI

    Here r some photos. I really don't want to spend $350 on a wiring harness. I'm good at labelling and rewiring. I have no fears about the engine compartment, I'm just nervous with how much I'll need to wire up inside the cab
  24. usar17

    Carb to TBI

    Only things missing from this c20 is the radiator, battery, windshield and bed lol
  25. usar17

    Carb to TBI

    Just has to pass a visual ;) The 87 is complete. Windshield is missing so the interior has been exposed to the weather.....snow right now. Idk how well the ecm would hold up to that. I'm ok with wiring. Just didn't know how well it would match up. My 85 has cruise control. Do I have to worry...

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