Recent content by Schurkey

  1. Schurkey

    1997 5.7 vortec, Black, Red, Grey, or aluminum rtv

    https://4lowmagazine.com/rtv-colors-and-when-to-use-them/#:~:text=Black%20RTV%20can%20flex%2C%20allowing,exhaust%20and%20high%20heat%20applications. The shortest possible answer is you want The Right Stuff Black in the "aerosol" (pressurized) can, or caulking-gun cartridge...
  2. Schurkey

    Vortec 7400 FPR and Injectors Replacement

    The United Motor Products VENTED cap and rotor set seem well-loved on this site.
  3. Schurkey

    Bad Temp Gage

    Verify ALL fuses/circuit breakers/fusible links. Download service manual set for your vehicle from the links in the Sticky threads section of the Engine forum. Verify wire from temp sending unit to instrument cluster. Verify instrument cluster including gauge itself.
  4. Schurkey

    Truck not turning over

    Is it just me? Am I hallucinating? That solenoid on the fender is not part of the GM wiring harness. Somebody added it later. Looks to me like there's a missing cable on that fender-mounted solenoid, assuming it's for the starter motor and not some other accessory. How are the wires...
  5. Schurkey

    Thermostatic valves for the TBI Intake

    It's not "really cold" you need to be concerned about--although having the heated-air intake sure wouldn't hurt. The genuine concern is 40-ish degrees F., and high humidity/raining. The main problem that the heated-air intake is trying to cure is throttle icing, and that's generally a...
  6. Schurkey

    OBD1 ABS codes

    Ideally, you'd be able to clear the codes and see what comes back. If the speed sensors are all showing the same value, I'd expect your "36" and perhaps your "37" to go away. That leaves only fault codes for the ABS unit itself. If the rear speed is slightly different from the front...are the...
  7. Schurkey

    Thermostatic valves for the TBI Intake

    Why do you need a thermostatic valve at all? What are you trying to accomplish? The heater hose is not "at the exhaust manifold". The intake manifold at the heater hose area will be at whatever temperature the engine coolant is, typically ~190--230 degrees F. The only GMT400 vehicles with...
  8. Schurkey

    New engine options 1993 K1500 5.7l tbi 4l60e

    First Option: If the Holley Sniper won't control your transmission, I'd pass. Ignition timing is not controlled by the computer; I suspect there's no knock-sensor. No EGR. Not emissions-legal. I'd think the cruise control would still work unless you disable the DRAC. Second Option: Why...
  9. Schurkey

    Back fire through intake when floored

    Verify spark power with a spark-tester calibrated for HEI. Maybe the coil is weak, and when voltage demand increases with load, the coil shorts-out.
  10. Schurkey

    OBD1 ABS codes

    Educated guess. I'm fairly sure it's an EBC4. I've never worked with that system. Instructions attached. I've only worked with Snap-On scan tools, not OTC/SPX. If the manual is calling-out the BRAKE light, they mean the BRAKE light, not the ABS light. But I'm surprised that the ABS light...
  11. Schurkey

    Tbi fuel pressure gauge adapter

    You "can" test fuel pressure anywhere between the pump and the throttle body, as long as your adapter fits the system. It's crazy to test pressure BEFORE the fuel filter, because you'd get a false, high reading if the filter plugs. No, I would not leave the test fitting in place after the test...
  12. Schurkey

    OBD1 ABS codes

    EBC4 ABS? What scan tool?
  13. Schurkey

    Knock sensor issues

    Balance shaft is one of the differences between his old engine (doesn't have balance shaft) and the replacement engine (has balance shaft.)
  14. Schurkey

    '93 K3500, 454 TBI, poor drivability

    Usually, the access point for the supply is the rearmost connector before the harness goes up 'n' over the tank. The ground is usually a separate, single wire with a screw connecting it to the frame. I built a one-foot "extension" harness using Weatherpack connectors and pins, and some plain...
  15. Schurkey

    Knock sensor issues

    I told you in your other threads, your existing computer is only looking for a signal from ONE knock sensor. I bet SOMETHING ELSE is wrong. Check fuel pressure. Verify all "Tune-up" items Connect a scan tool, look for codes but more important, look at the data stream. Please don't start more...
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