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  1. M

    Newbie from Queentuckey,Az

    Welcome - nice clean rig.
  2. M

    Beware: Newbie on board!

    Welcome!
  3. M

    Obd1 cable

    I ended up ordering from OBD1 diagnostics. Not cheap at $60 but I'm at the point in my project where I'm not willing to risk any potential problems with a less expensive cable. I'm sure many other cables have worked fine for people but that's the route I am going.
  4. M

    1st TBI Conversion Help Needed

    Sorry for the lack of responses guys, been offline for a few days travelling. The throttle body has not been rebuilt. I cleaned it good with some carb cleaner and that was it. I'll do the IAC relearn procedure when I can get it in a heated shop. Its really cold here right now. I am happy to...
  5. M

    1st TBI Conversion Help Needed

    I plowed some snow with it this morning and got a better feel for the symptoms. When cold, it has a really bad dead spot right off idle. It will pop and die sometimes. If I feather my way through the throttle I can keep it running. If I mash it to the floor from idle it goes right through...
  6. M

    1st TBI Conversion Help Needed

    Well I put on a new coolant temp sensor and that did not help. Downloaded Tuner Pro RT and need to get a cable ordered. The symptoms aren't bad enough to prevent us from using it but are annoying enough to want to fix.
  7. M

    Bvllsh!t on craigslist.

    Uh, yeah. https://lincoln.craigslist.org/cto/d/1985-chevy-kton-with-2016/6411757044.html
  8. M

    heater fan - always on?

    Good to know. My 78 fan runs all the time. This time of year I like it. During our one nice month of the year (July) it can get a little warm. I like the idea of installing a valve on the heater line.
  9. M

    1st TBI Conversion Help Needed

    Funny, I was thinking about the coolant temp sensor on my way to work this morning. The current sensor is from the donor truck. Since we've been getting some snow up here it's been put to work a fair amount and haven't had time to get the cable and tuner pro setup done. I was hoping I could...
  10. M

    1st TBI Conversion Help Needed

    Thanks for sharing the diagram. The coil tested fine per that diagram. I did not try to arc the coil to a test light yet. The weird thing is that the symptoms seem to get much better once the truck is fully warmed up. No codes so I'm flying blind a bit. My neighbor mechanic set the timing...
  11. M

    Brake Problem

    Circling back to report I now have brakes that will lock up all four tires. I replaced the master cylinder and bled the brakes for what seemed like forever with a Mityvac. I did find a leak on the new PV connection, tightened that all up and they seem to be good to go.
  12. M

    Transfer Case Speedo Gear Question

    I tried plugging the cable directly to the speed sensor, which is plugged to the TC. There was no speedo adaptor on the truck when we got it, so I assumed nothing was needed.
  13. M

    Transfer Case Speedo Gear Question

    Up until today the speedo has not worked in my 78 k15. I have scrounged a gauge panel/speedo from a 74 2wd, and a cable from a 84 K10. It works but is measuring about 15mph slow in comparison to a gps. I pulled the driven gear and it is 18 teeth. It appears the only option is an external...
  14. M

    1st TBI Conversion Help Needed

    I replaced the spark plug wires and still have the same symptoms, albeit slightly better than originally. It doesn't seem to cut out as bad after fully warmed up. I'm really beginning to question my thought process for using all u-pull parts for this conversion. So do you think the next item...
  15. M

    1st TBI Conversion Help Needed

    They are original wires so that is a good thought. Does a guy need to go to the larger 8mm wires or are stock replacements sufficient for this application?
  16. M

    1st TBI Conversion Help Needed

    to be honest I only checked the first one out of the box, it was .035. Stock coil from 91 donor truck.
  17. M

    1st TBI Conversion Help Needed

    I changed out the TPS and it seemed to drive MUCH better. We still need to drive it some more but hopefully I have this nipped. I was able to get the base TPS setting to .54 and figured that was close enough. And I figured out why it would only go to 4.0 volts at WOT. The linkage from the...
  18. M

    1st TBI Conversion Help Needed

    Sorry for the confusion. My chip has been re-burned to eliminate EGR, AIR, and knock.
  19. M

    1st TBI Conversion Help Needed

  20. M

    1st TBI Conversion Help Needed

    I'll check out the mod, but I've had several email convo's with Dave W and he hasn't mentioned the circuit mod. From everything he's told me my setup should work fine for a stock application. I suppose I could get the cable, download Tunerpro and log some data. That should tell me right...
  21. M

    1st TBI Conversion Help Needed

    I got everything hooked up and it starts and idles really nice. We took it for a long drive and it seems to have an off idle (maybe 1000 rpms) stumble or dead spot. It sometimes will die. Other times you can feather your way through the dead spot. Once its past the dead spot the engine seems...
  22. M

    1st TBI Conversion Help Needed

    I don't know what that is. Please elaborate.
  23. M

    1974 K10 short bed

    Well I can tell you that performance isn't one reason...at least not high performance as in HP, etc. I did a TBI swap for better cold weather starting (its on a plow truck) and some mileage benefit. Its an incredibly reliable setup for stockish setups.
  24. M

    1974 K10 short bed

    Those parts don't look familiar, but I'm a newbie. Someday I hope to add the second tank to our setup.
  25. M

    1974 K10 short bed

    I approached my project with a similar mindset. I wanted to do the conversion with my 16 year old son using as much U-pull parts. Our donor vehicle was a 1991 Chevy 1500. Our truck is a 78k15 with Gen 1 SBC and TH350. I leaned heavily on gearheadefi.com for conversion threads and schematics...

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