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  1. Busted Knuckle

    Driveline Vibrations---Possible Driveshaft Issues?

    I'd be looking for a bent wheel or problem with a tire before starting to replace driveline parts that are likely still good.
  2. Busted Knuckle

    Considering a 93 K2500

    I need to clarify, the fuel injection changes were ref to 7.4L TBI. I don't believe the 5.7L is significantly different from earlier. They tweaked the Intake Manifolds and TBs to improve the fuel distribution and atomization during the era. 94 and 95 454's use a linear feedback EGR valve and...
  3. Busted Knuckle

    Another K2500 Suburban...

    Niiice Truck ! Mahe sure to change the intermediate steering shaft with rag joint. There's the slop. My writeup is on Amazon for the Dorman product.
  4. Busted Knuckle

    Considering a 93 K2500

    IMHO You're going to be better off with a 1995 2500 with 8 lugs, unless you do no towing, then 1500 OK. 1994 and 1995 FI system is different improved than 1992-1993. Everything that was going to be fixed for that era was fixed BY 1995. 1996 Vortec new, not a good year to own vs later.
  5. Busted Knuckle

    Another header post

    A true dual system should be 2.5". 3" won't help. I use Magnaflow stainless mufflers. Endless debate on X pipe but I don't think its needed on this use case. "Most of our techs agree that a street application 350 will benefit well from a header with 1 1/2" to 1 5/8" diameter primary tubes and...
  6. Busted Knuckle

    "Stock" 1991 K2500 5.7L V8 fails smog with unburned gas at exhaust.

    It won't run right without an O2 sensor. CAT output is not monitored. I'd begin by changing the MAP sensor and all the hoses associated. Next, the TPS throttle position sensor. These are both critical. You must replace the cannister OR block the port where it connects to the TB. Make sure...
  7. Busted Knuckle

    Temperature Sensor/Gauge

    That yellow line is about what I get using a 180F thermostat. Up at least one small grad for 195F.
  8. Busted Knuckle

    Correct geometry for 700r4 in a 350 carb set up

    There's a release tab on the throttle sense cable to the trans. What I always did was release and pull so the cable was too short. Then manually move the throttle all the way open, which will pull the sense cable into proper position. Release tab is back by the mount.
  9. Busted Knuckle

    Three projects detailed in coming posts

    Been too busy to keep up here. I've completed 2 projects that I'll detail here later, and have a third coming. - Fuse added to Alternator line in place of fusible link - Windshield squirter hoses replaced with 4mm silicone hose - Swap of complete grill assy and parking lights to blackout...
  10. Busted Knuckle

    Difficult to find Engine Stumble - Set Timing Connector 1995

    I think I'll solder it tomorrow just so everyone can rest at ease. This was used when I changed the entire ignition system including the distributor, which was an absolute ***** to stab. The 454 TBI gets 4 deg BTDC and you won't need to check it for years. I used a long 1/4"extension and MAC...
  11. Busted Knuckle

    Difficult to find Engine Stumble - Set Timing Connector 1995

    I'm an Electrical Engineer with 40+ years of experience. The wire nut is absolutely fine. Alternatively, just solder it and cut it off fresh every time its needed. There is no reason whatsoever to use a whether-pak connector. This is why I added 8" of wire. Fresh cut and nutted or soldered...
  12. Busted Knuckle

    Camshaft decision help

    TBI doesn't like a lot of overlap. You are dealing with a speed-density system not mass air flow. High lift is OK. Crane Cams used to make (and may still) a series called CompuCam for TBI. The other place I suggest looking is Richard Holdener's videos on YouTube. Look for videos revelant...
  13. Busted Knuckle

    Need help with ac

    Lol I just went into a '95 and was able to extract quite a bit of leaves and debris from the evaporator area. If your mode door works Ok this might be worth a try. This requires removal of the glove box door, the ECM, and the blower. While the blower is out, clean the terminals where the...
  14. Busted Knuckle

    New Member

    Welcome. I just signed up a little while ago. Lots of good info on these threads. Great looking truck you bought!
  15. Busted Knuckle

    Brakes and powersteering both out

    Must have low pressure. Check the fluid level first. I'm on my second PS pump and 3rd Hydroboost unit at 160Kmi. My hoses are showing some leak-through. I had a mechanic do the pump because a puller is needed. Did my own HB. If you tackle HB there's a spring clip you won't want to lose.
  16. Busted Knuckle

    Air Conditioner Wont stop running

    The odds its the computer are extremely low. Could be a pinched wire. I can't recall ever finding a bad computer, but have seen some thrown at the problem. Its easy to follow the diagram, but hard to find test points you can access.
  17. Busted Knuckle

    What determines a 1 or 3 pin oil pressure sensor?

    This is one of the reasons for "Busted Knuckle" Aahahahahahaaa.
  18. Busted Knuckle

    color me dyslexic, code 32 NOT 23

    I've had EGR codes thrown from a partially clogged cat. It wasn't until it became fully clogged did I figure that out. To test for a clogged cat, remove the O2 sensor. If it ran bad before it will run OK with the O2 out. A mild clog will need a pressure gauge. I believe I clogged the cat...
  19. Busted Knuckle

    Replacing a non airbag wheel with an airbag version - cap questions

    Grant wheels are great. Try calling their customer support line. The 4 holes are the attachment points for the air bag module. If it turns out you need that, try a scrap yard or eBay. www.grantproducts.com › contact-us Toll Free: 1-800-952-6947
  20. Busted Knuckle

    Temp sensor

    Whenever I do my trans cooler lines (rusty) I am planning to put in a T fitting where the fluid enters the external cooler by the radiator. That will capture the oil temp close enough.
  21. Busted Knuckle

    What determines a 1 or 3 pin oil pressure sensor?

    3-Pin oil pressure: One pin drives the gauge. The other two are switch contacts that run your fuel pump, supplying +12. This went bad on mine - oil into the connector. It can be another gremlin that's hard to find. Gauge was low n wobbly. ECM will Deliver power thru the FP relay for some...
  22. Busted Knuckle

    Refinishing the Black Fender Flares

    Actually there's a body shop right down the road where one of the Paint Artists just restored his own ~ 1995 Sub. I'm gonna work out a plan with him to help clean up my exterior mess. I need a grille fascia and fill plate, got dents in both bumpers, lots of panel mismatch, dings, dent from...
  23. Busted Knuckle

    454 tbi with 4l85E swap into c1500 350tbi

    We built a food trailer and I stamped the VIN into that. Quite satisfying. It is idle however after friends opened brick-n-mortar, only to be slammed by the CoV.
  24. Busted Knuckle

    454 tbi with 4l85E swap into c1500 350tbi

    Hooray! Hit 25 years this year and didn't have to have an emissions inspection. Had I not just installed a good Magnaflow Cat 2 years ago, I'd be giving that to the recycler. So its a free for all now with the mods, although I'm pretty happy with it after a end-to-end complete tune. The TX...
  25. Busted Knuckle

    Let’s talk VOLTAGE

    I would remove, inspect, and re-install the IP cluster to see of the contacts have become intermittent. There is also a connector where the IP harness joins the ECM harness, and of course the ECM harness to ECM connectors. Any of these intermittent could do that. Ground of IP would be a good...

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