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  1. L

    TBI and low MPG advice

    I rebuilt the throttle body and installed the spacer. I also broke the injector housing. I epoxied it and it is holding so far but does anyone have a spare they are willing to part with?
  2. L

    TBI and low MPG advice

    So here are some videos of the codes
  3. L

    TBI and low MPG advice

    there are exhaust leaks at every joint and the exhaust is not factory. There are 2 cats and a muffler. The exhaust leak i was mentioning was a black soot mark on the side of the O2 sensor making me think that was a leak as well. I ordered the new O2 and coolant temp sensor. I am planing on...
  4. L

    TBI and low MPG advice

    So the bulb wasnt bad but i think the circuit board is going bad. I wiggled it and i was able to get codes. If i read it correctly I got a 12 13 14 I then put the dash back together and the bulb wasnt working again or i would have a video to make sure i was interrupting it right. So there...
  5. L

    TBI and low MPG advice

    When i turn the key i get a brake and a fasten seat belt light and both go off after a couple seconds when the engine is started. I do not recall a check engine light but I can check tonight and get a video of the dash during key turn and first startup if it would be helpful.
  6. L

    TBI and low MPG advice

    Fuel filter was replaced along with cap, rotor, wires, and coil. Every time i have put gas in it i have added a bottle of Lucas injection fuel treatment with it. Nothing is around the flex plate. I have the plugs i just couldn't locate them when i was doing the tune-up items. I also havent...
  7. L

    TBI and low MPG advice

    This is possible. I am not seeing anything but i did get some garbage out of the exhaust after first startup. Replacing all of the exhaust is on the todo list. I cleaned the acorns, nests, snake skins and other items off the engine when i started working on it. but i do seem to get a healthy...
  8. L

    TBI and low MPG advice

    I am not the best at finding info on these engines. But from what I can find it sounds like the bowls the injectors sit in should get 12 psi but from the factory 9-12 was acceptable and the springs may weaken over time. I ordered the 14 psi spring to make sure they are getting enough pressure.
  9. L

    TBI and low MPG advice

    Just had a shop rebuild it and a brand new torque converter
  10. L

    TBI and low MPG advice

    parking brake releases just fine and the truck will roll freely...although it is a pain in the ass to push it. I did finally find the plugs i bought for the truck. I have only pulled one and they are the same ac delco part i ordered. the plugs were older but the plug looked fine. i may just...
  11. L

    TBI and low MPG advice

    I worked it out and I am getting around 4mpg which i think is low. I was excepting more like 8-9 refresher 1989 r3500 with the 454 FI I know I have a high idle problem To sort that I have ordered a new TPS and IACV I have also read that rebuilding the TBI could help First question which ac...
  12. L

    Basic TBI mod success

    Where should the timing be set?
  13. L

    Hydroboost leaking

    Where do i find my brake code?
  14. L

    Hydroboost leaking

    I have found that my hydroboost unit is leaking from a rear seal and dripping into the cab. I looked under the floor mat and I think this has been going on for awhile looking at the carpet. Is this unit rebuild-able? It is working there is just a small drip of fluid every time I press the brake.
  15. L

    Bought a truck.....

    I have continued posting under this thread: https://www.gmsquarebody.com/threads/clifford-the-big-red-truck.24471/ in under construction
  16. L

    Running drive and steer tires

    I am putting my truck together still slowly but surely. 1989 r3500 7.4 and TH400 2wd I do drive across yards, fields, and up grass/mud hills. When I have this truck together I will be selling my others. My main truck is a 94 c1500 and I have ran Kuhomo road venture AT51's and for the most...
  17. L

    Remote mount transmission cooler location question

    Did you run that cooler stand alone or inline with the radiator cooler? How did your temps look? Do you have any images of how you mounted it?
  18. L

    Remote mount transmission cooler location question

    I am going to be installing a remote mount trans cooler from Derale on my truck It is an 89 r3500 with a th400 I am wanting to locate it under the truck to remove heat load from the front. Is anyone else doing this and where have you mounted yours? This is the unit I have Here is the...
  19. L

    Bought a truck.....

    I did break my tank selector switch so I ordered one of these.
  20. L

    Bought a truck.....

    the old head unit was dead after looking at the wiring i think the exposed wire on the 12v shorted killing it as the 10amp fuse in the back of the head unit was popped. I picked up a cheap head unit from my buddies audio shop for now. not surprising they also had the speaker channels wrong so...
  21. L

    Bought a truck.....

    I also cleaned up some wiring under the dash. The brake controller appears to work. depressing the pedal moves the knob on the controller and activates the light. It is hydraulic and has a hard line ran to the back of it. the red wire coming off the back appears to be the hot wire to the...
  22. L

    Bought a truck.....

    So waiting for parts to arrive so i didn't get much done this weekend. I did clean up the gauges. Rubbing alcohol followed by plastic-X. I still need to go back over them with alcohol and a microfiber.
  23. L

    Bought a truck.....

    Thanks everyone. I still have a lot to figure out. I have started digging into some of the other posts for ideas and how to threads.
  24. L

    Bought a truck.....

    I have my mother looking and checking with my aunts for any pics. It was a dually and I know it was extended because we would be set behind the front bench but it wasnt a crew cab. He had a maroon camper top on it as well that we would crawl back into going down the road. It was a diesel but...
  25. L

    Bought a truck.....

    Also have the manual for the lion 40 and it has a complete board layout in it

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