Recent content by Schurkey

  1. Schurkey

    454 SS dies randomly, no codes

    I use a Snap-On Solus Pro, purchased used from a seller on eBay. $3500+ worth of top-shelf professional-grade tool when new in 2008, for $350 delivered to my door a couple of years ago. (Somewhat more than that now--$450--$500 due to Senile Joe's economic problems, coupled to the Wuhan Plague...
  2. Schurkey

    Replaced hydrobooster issue

    Download the service manual set for your vehicle from the links in the Sticky thread section of the Engine forum. Follow the service manual diagnostic and replacement procedure.
  3. Schurkey

    Rotors and brakes opinions

    WHAT VEHICLE??? WHAT BRAKE CODE? If this vehicle has JN3/JB3 brakes, consider upgrading to JN5/JB5. Upgrade the calipers, master cylinder and booster. If you need hubs anyway, get JN/JB5 hubs and rotors. Same diameter rotor, but thicker. In MY driveway, I'd measure those rotors. If...
  4. Schurkey

    454 SS dies randomly, no codes

    1. What is the fuel pressure at prime, when under load, and when the engine stalls? 2. When the engine won't re-start--it cranks but won't run (correct?) Or does it not crank? VERY different diagnostics. 3. Connect a scan tool, verify EVERY sensor and computer output including electronic...
  5. Schurkey

    Cooling System Upgrade/Replacement

    HELL, NO! Overpriced scam. Get a regular thermostat of the correct temp rating. Have the used radiator checked-out by a radiator shop. Or just buy a new radiator. Last thing you need is to install someone else's corroded, full-of-hidden-scale radiator in your truck. Consider replacing the...
  6. Schurkey

    Power Steering Diagnosis

    Could be the pump. Could be the steering gear. Might be a restricted hose. This thing have Hydroboost? Find and fix the leak. See what happens. MAYBE you can get a PS pressure gauge from the loaner-tool section of a local parts store.
  7. Schurkey

    Getting worse and worse...

    I'm not clear on this. You have fuel pressure in spec AFTER the initial prime? But not DURING the prime cycle? Did you verify the spark plug wires and coil wire? EGR system? Connect a scan tool. Verify EVERY sensor and computer output, in this case pay special attention to the Idle Air...
  8. Schurkey

    Wiring issues

    Perhaps a moderator will move this thread out of ENGINES and into Audio + Electronics. Headlight problem is crappy ground. Fix the ground for the headlight, you'll fix the headlight. MAYBE that fixes the wipers. Maybe not.
  9. Schurkey

    Misfire Just Off Idle

    The computer actually believes that the RPM is changing, not just a malfunctioning instrument cluster tach. Therefore, it's going to command fuel and spark based on the RPM it "thinks" the engine is achieving. This is almost certainly an ignition issue...with an outside chance of RFI-induced...
  10. Schurkey

    1997 5.7 Vortec misfire/stumble

    That's what crossed my mind. He's feeling the torque converter clutch disengage.
  11. Schurkey

    Sway bar link angle and popping noises..etc

    With the idler arm disconnected, the rest of the steering linkage is going to flop around like a wounded guppy. The only thing I see for sure is that the Pitman arm splines have relative motion, and that is a problem. It may not be the only problem, but it's the only one I see in the latest video.
  12. Schurkey

    LC9 swap from donor truck - do it?

    LC9 is an LS-family engine. Wise. Not even close. 315 horsepower vs. 210, approx. 1.5 times the horsepower--not 2X--3X. 338 ft/lbs torque vs. 300 But the torque peak on the LC9 will be at a higher RPM, so the 5.7 will seem stronger most of the time. "Illegal" computer tuning Remove...
  13. Schurkey

    Brake warning light flickering and engine running funny

    Three things can turn on the instrument cluster "BRAKE" light. 1. Park brake engaged 2. "Safety switch" on the Combination Valve is activated by a hydraulic system failure 3. ABS problems None of those are directly related to engine performance. Kinda guessing that the light, and the engine...
  14. Schurkey

    Brake warning light flickering and engine running funny

    WHAT VEHICLE???
  15. Schurkey

    LC9 swap from donor truck - do it?

    Perhaps a moderator will move this thread to the LSX + Carb Swaps sub-forum. "I" would not bother to remove a 5.7L in favor of a 5.3L, ESPECIALLY one with cylinder deactivation. The 5.3 can make power, but dead-stock it's not much of an upgrade. Maybe even a downgrade, depending on usage.
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