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  1. Matt69olds

    Mysterious wire under the dash

    Without a doubt, those went to the cruise lever.
  2. Matt69olds

    actuator rod

    https://www.steeringcolumnservices.com/steering-column-parts/gm-buick-cadillac-chevrolet-oldsmobile-pontiac.php I built the column in my Olds from a bunch of broken columns I got from my local salvage yard. They were all columns from theft recovery’s. Since I wanted a column with tilt, delay...
  3. Matt69olds

    4L65E Mega Monster Transmission - Destruction and Shift Kit check balls

    Usually that kind of planetary damage occurs when someone flat toes a vehicle with the driveshaft installed. If the engine isn’t running, there is no lubrication other than whatever was left in the pinions last time it ran. The gears get hot, give it enough time they will weld themselves to the...
  4. Matt69olds

    Unusual radio issue

    Retained accessory power was still a few years away when this truck was built. Been dealing with the flu, haven’t really had much motivation to dig deeper into this problem. Hopefully the weekend cooperates.
  5. Matt69olds

    Horn has no power

    Find the turn signal switch connector. Find the black wire in the connector. Use a fused test light, ground the black wire. The relay should click, ideally the horn should sound. If so, the problem is above the turn signal connector (most likely in the wheel)
  6. Matt69olds

    Unusual radio issue

    The radio and amps are completely unplugged. The tiny amount of voltage is still there, it’s not coming from the radio.
  7. Matt69olds

    Unusual radio issue

    Yep, we ordered the radio thru Crutchfield. While they still SELL the retro sound brand, they no longer offer tech support for them.
  8. Matt69olds

    Unusual radio issue

    Well, I tried anew ignition switch today. Didn’t fix a damn thing. As someone mentioned, the factory wire color for ignition feed to the radio is yellow, it changes to red for the aftermarket radio. Orange is the factory wire color for constant power, it changes to yellow for the new radio...
  9. Matt69olds

    No Horn, Courtesy or Bed light

    The fuses are powered on one side by a common buss bar. Then the other side of the fuse powers the circuit. Make sure ALL the fuses are good, and more importantly, none are missing.
  10. Matt69olds

    Unusual radio issue

    We noticed the radio continues to play for several seconds after shutting off the ignition. I thought it was strange, now that I know about the residual voltage on the radio circuit does it make sense the radio keeps playing BECAUSE of the voltage on that line, it takes a few seconds for the...
  11. Matt69olds

    Unusual radio issue

    My son and I installed a Retro Sound stereo in his 92 Yukon about 6 months ago. When we first installed it, we had trouble with the radio not shutting off. I have had lots of experience with things NOT working, not do much things that won’t stop working! I checked for power on the red wire...
  12. Matt69olds

    Strange overheating issue

    Sounds like you have an air pocket in the cooling system. Before doing anything, raise the front of the truck. Remove the radiator cap, top off the coolant. Let it sit overnight with the cap off, gravity will naturally force out any air
  13. Matt69olds

    1986 C10 Headlight Issues

    I assume you mean you have power on the large red wire at the headlight switch? If you study the diagram, power comes in on the large red wire. With the park lamps on, you should have power at the brown wire (parking lamp feed) the green wire is dash lamp power, it goes to the dash lamp fuse...
  14. Matt69olds

    Do I need an Alternator upgrade?

    I did not know that. I have a Snap On load tester, next time I have the car running I may load test the alternator just to see what it does. Since it’s below zero with snow falling, I’m betting it will be awhile. BTW, welcome back.
  15. Matt69olds

    Turbo350 w/shift kit slamming 2nd gear

    The ONLY time I will spend money on a shift kit for a 350 trans is if it’s still in the vehicle and in good working condition. As nick pointed out, it’s very easy to install a homemade shift kit during an overhaul with the things most gearheads have in their shop. The only advantage to a shift...
  16. Matt69olds

    Pictures of convenience center plugs?

    My son and I are converting his 92 Yukon from manual everything to power windows, locks and mirrors. I”Frankensteined” everything with parts from several other trucks. While time consuming, it hasn’t been terribly difficult. My question: does anyone has either a FACTORY service manual, or a...
  17. Matt69olds

    Do I need an Alternator upgrade?

    I swapped a 105 amp CS alternator onto my Olds 20 years ago, I have never slipped the belt. The alternator came with a pulley for a serpentine belt. I was kinda worried about belt issues when I swapped to the V belt.
  18. Matt69olds

    More help please on CS TO SI

    It’s preferred to put the connection for the “S” wire closer to the fuse box. That way the regulator will sense voltage closer to the electrical draw. Having said that, if the electrical system is in good condition with properly sized wiring, there shouldn’t be much difference between system...
  19. Matt69olds

    How to flash high beams?

    Yes, it uses the same mounting studs as the ignition switch. Once you lower the column it’s pretty easy to get to.
  20. Matt69olds

    How to flash high beams?

    You can easily add flash to pass, assuming the dimmer is on the column. Get a headlight dimmer switch for a 93 Cadillac Fleetwood. There may be othe cars that use that dimmer switch, I know the Fleetwood works. If you compare the switches, you will note the Cadillac switch has a 4 terminal...
  21. Matt69olds

    Power window/lock/mirror Frankenstein conversion??

    Greetings. I am attempting to convert my sons fully manual 92 Yukon to power everything using a bunch of junkyard parts. Normally, I would be one of the first to tell people to consult a manual, but since I’m not exactly sure what year/model all these parts came from I don’t know where to look...
  22. Matt69olds

    TH400 Information Thread

    I just re-read this again, and thought of a couple other additions. I prefer to install return springs in all 16 spring pockets in the direct drum. I do this to prevent centrifugal clutch apply. The direct drum spins almost twice engine rpm in 1st gear, the tiny amount of fluid left in the drum...
  23. Matt69olds

    Engine Carbon Cleaning

    Get the engine hot. Remove the air cleaner. Race the engine while SLOWLY dripping ice cold water down the carb. The idea isn’t to stall or drown the engine, but it will run lousy with the water. When the cold water hits the hot carbon deposits, they will flake off and be blown out the...
  24. Matt69olds

    puzzled on no start

    Verify it has spark before doing anything else. Next, carefully pour some fuel into the vent tube. Wedge a screwdriver in the choke flap to hold it open, look down into the carb while you pump the throttle. You should see a solid stream of fuel out the accelerator nozzles. If not, it’s pretty...
  25. Matt69olds

    Disappearing coolant

    You might try retorquing the head bolts, remove the ones that go into the coolant and apply thread sealer. You would think if the engine was burning coolant you would see a “steam cleaned” spark plug, your look pretty good. It’s probably time for a leakdown test. Top off the radiator first...
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