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  1. Dante2795

    Lmm GPCM delete

    Has anyone successfully deleted the gpcm? And what was all needed to do so? I’m deleting my glow plugs and wires from harness while engines out and trying to see what’s involved in deleting the module as well. I’d liked to ditch as much wires as possible for a cleaner engine bay
  2. Dante2795

    Coolant and fuel temp reading negative

    My buddies lb7 started running rough and random stalling with no codes. Went to log it and saw both coolant and fuel temp are reading the same and both negative. When giving it throttle they both max out at 12 degrees. Swapped in new coolant temp sensor with no change, wires appear good. Any...
  3. Dante2795

    Looking for Engine harness bale connector pinout

    Does anyone happen to have the pinouts for the 03 lb7 engine harness bale connectors?
  4. Dante2795

    Crank no start, has fuel pressure.

    Completely stumped here. Lb7 broke a crank, we swapped in a complete running engine back in it. Truck builds higher rail pressure than desired. It’s reading 9k psi cranking. But will not start. I am getting P0374 as well. Swapped in brand new cam and crank sensors and nothing. All wires appear...
  5. Dante2795

    Anyway to identify lb7 injectors?

    Recently acquired a lb7 with a broken crank. Injectors, lines and all bolts appear brand new. Now is there anyway to identify if they’re Bosch remans or generic junk? I attached some pictures with appears to have a date of 2022-6-15 but don’t know what the other numbers mean
  6. Dante2795

    Lmm randomly stopped building rail and won’t start

    My lmm has been perfectly fine until I noticed an injector leak. So I fixed it and unplugged fpr to check for more leaks. Well it maxed rail out then stalled and it will not start back up. It won’t build any rail pressure at all to start. I loosed HP line from pump while cranking and plenty of...
  7. Dante2795

    4wd not engaging but actuator works

    4wd was working perfect yesterday in the snow. Today, I tried pulling my trailer out of the snow and 4wd wasn’t engaging. (Electric tcase) -Tried 4low and truck goes into neutral and coasts - 4x4 switch works as it should. Can hear transfer case -front actuator works -no service 4wd light...
  8. Dante2795

    Issues with stalling and fuel rail pressure

    Having issues with my lbz racetruck. 200s, dual pumps and single 76. When I rev it up, it surges then stalls out. In P, N or D. Just replaced filters and drained tank and put fresh diesel in. Still the same issue. Unplug either fpr and it stalls out instantly. Anyone ever run into this?
  9. Dante2795

    bad Fuel leak in exhaust

    Swapped nozzles in my lbz. now have fuel coming out of exhaust on driver side. Dropped manifold and pulled valve cover. Fuels just sitting in valve cover and all exhaust ports wet. No fuel comes out if I pull each glow plug. Passenger side is perfectly normal. No misfires or knocks. Any ideas?
  10. Dante2795

    Diesel fuel pouring into exhaust

    Swapped in injectors into my lbz and diesel fuel started dumping into exhaust. Dropped manifold and found its cylinder 4 so I swapped another injector in. Still dumping out fuel. Any ideas? I’m stumped at this point
  11. Dante2795

    Very Low oil pressure(4psi)

    Took truck to track today. Made first pass without issues until I went to park, then truck popped up with low oil pressure(reading 9-10psi). But once I give it some throttle the light would go off and pressure would build up. Was a little low on oil so I put some in. Then went up to 14 at idle...
  12. Dante2795

    Engine swap now u0101

    Just finished dropping engine back in the truck. Got it running and everything is good besides code u0101. Loss comm with Tcm. Plus no light under gear and brake and abs light are on. I’m thinking ground somewhere but not sure. Tcm was fine before so I don’t see how it would mess up from sitting...
  13. Dante2795

    Lb7 pistons swap questions

    Trying to I get some info together for a budget build. When swapping in good used low miles lb7 pistons, would it be safe to keep those rings on or get new ones?
  14. Dante2795

    Erratic temp gauge and p1092

    After about 10 minutes of cruising temp gauge shoots all the way up then truck says “ENGINE OVERHEATED LET IDLE” but will then go straight back to normal. Then Rail pressure starts going all over the place from 0psi up to 27 then back to desired. After it does that for about 5 minutes it’ll...
  15. Dante2795

    Hesitation or misfire only at highway speeds

    Truck has a slight miss and hesitation when cruising at highway speeds. Doesn’t do it at idle or under acceleration, just cruising and sometimes I can hear what sounds like injector rattle. No codes, balance rates are all in spec, actual and desired rail pressure are perfect with each other. Any...
  16. Dante2795

    Schrader valve delete question

    So I’m in the process of doing a s400 kit and want to clean up the fuel hard lines. So my plan is to run a line straight from lift pump to cp3. Only question is when I do that what do I do with he return line that connects to the bottom of the Schrader valve?
  17. Dante2795

    Lmm budget rebuild

    Im sure im on borrowed time with my stock long block. Considering it has over 200 track passed and 200k miles. So im looking to get parts now so when it does go. And im thinking of getting used low mile lb7 pistons and using my rods. Should I cut and coat them? Does it need balanced? As far as...
  18. Dante2795

    Pulling with lowered truck

    Looking to do my first sled pull but I’m worried my truck being to low will cause problems. It has 3in shackles with 2 leafs removed and I don’t have air bags. Will that cause too many issues with raising my front end? Any info would be greatly appreciated.
  19. Dante2795

    Trucks pushing through brakes

    Over the past couple weeks I noticed my pedal was getting mushy right after replacing pads and rotors. So yesterday I went to the track and after a few passes the truck would push through the brakes at like 6psi. And now the pedal is even worse and when I put in reverse and back up the pedal...
  20. Dante2795

    Has anyone pieced together a turbo kit?

    Hello, I’m looking to piece together a turbo kit. Has anyone ever done that. I’ve priced a pedestal, s300 turbo, fleece install kit that comes with all lines and gaskets, and a hx40 flange downpipe. And I was just gonna modify my cold side pipe and find a way to make my s&b jntake work. Thanks...
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