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  1. DAVe3283

    LB7: Glow plug Controller???

    You should have the following: B+ input post: 1 large wire coming from 175 amp fuse Glow plug output post: 1 large wire to the glow plug bus bar & 1 small wire for feedback to the ECU. The small wire goes to a strange round plug right near the controller. Intake air heater out post: 1 large...
  2. DAVe3283

    LB7: Glow plug Controller???

    That sounds right, but I rarely mess with federal trucks. I will have to look at my brother's truck when I get some free time. You can just grab a multimeter and start probing continuity to make sure they are all actually connected together correctly. I think the wire on #2 should feed across to...
  3. DAVe3283

    LB7: Glow plug Controller???

    I'm guessing you have a Federal truck, not CA? I attached the CA schematic just in case. The Federal system is really easy to diagnose. It is just a large, custom, unreliable relay, but relays are simple. The CA system is harder to diagnose (in some ways), but far more reliable since it is all...
  4. DAVe3283

    Chevy1925 (James) Truck/motor build

    You have a LB7 crank, right? My theory was if a stock crank has seen as much abuse as yours or mine for 220k miles, it's probably good to go. Have it magged while it's out, IMO. A narrow journal crank is tempting, for sure, but you could get this back on the road a lot cheaper reusing yours, and...
  5. DAVe3283

    Twins with Twins, Anyone?

    Come on out to Boise. I just have to wrap up this LS harness standalone mod and I'll gladly help you with your engines. Should be done in another hour or so, so get cracking! :P
  6. DAVe3283

    Chevy1925 (James) Truck/motor build

    Dang, that blows. :( Do you think that cylinder was hydrolocking too? I would've guessed it would bend a connecting rod before that. Sorry man.
  7. DAVe3283

    Crank / Cam Signal Emulator

    It could be the duty cycle, could be the drive strength of the emulator is higher than the real sensors. If you want it to freak out, you could put some resistors in line with the emulator outputs. Start with 1 ohm or so and start going up until the ECU gets unhappy. This is a cool experiment...
  8. DAVe3283

    White smoke from tailpipe after idle

    What you're describing (white smoke when idling) is one of the signs it needs injectors again. Strong diesel smell from the exhaust, harder starting, and fuel in the crankcase are other signs your injectors might be bad. Any one of those could be bad injectors, and most trucks never exhibit all...
  9. DAVe3283

    Need some computer help

    CBS/CbsPersist are logs from Component Based Servicing (aka Windows Update). The logs are safe to delete. While you're in there, you can actually delete the whole C:\Windows\SoftwareDistribution folder safely on Windows 7. It will make Windows Update take a LONG time the next time you run it...
  10. DAVe3283

    Need some computer help

    That looks like a good program. I use SpaceSniffer, which is also free. Doesn't need installed, just unzip it to a thumb drive or something. Remember to right click and Run as Administrator, otherwise it can't see inside some system folders. If this is Windows 10, Microsoft has been changing...
  11. DAVe3283

    Twins with Twins, Anyone?

    Good to hear! I could extend the wires, but I would prefer to make an extension harness if I can. If you find the part #, please let me know. I'll dredge the internet more later this week and try and find it myself too.
  12. DAVe3283

    Twins with Twins, Anyone?

    You ever get any farther on this project? I am looking to do the same thing, and use the fuel temp sensor (or an equivalent) to measure oil temperature. If I can get/make an adapter to thread it into the top port on the oil filter adapter, then make an extension harness, that would be pretty...
  13. DAVe3283

    Filter head rebuild or replace

    I found a Parker with the LB7 line angles for a reasonable price a while back. Replaced the LBZ+ filter head that was on my Suburban with the LB7 version and new lines. Makes it look a lot nicer when things line up. Alternatively, you can get the newer model and a lift block that lets the lines...
  14. DAVe3283

    LLY: Help Lly p0016

    Yep, that's one way to do it. And we were talking about probing the CMP & CKP, not injector drive voltages. CMP = cam position sensor CKP = crank position sensor Neither of those should go over 12-14V during operation. If you did want to probe the injector drivers, that scope is rated 300Vrms &...
  15. DAVe3283

    LLY: Help Lly p0016

    That scope is rated 300Vrms on its analog inputs, which is more than enough for a 12V square wave. And you can find cheaper scopes if you look, this was just an example. For what it's worth, I wouldn't build the harness adapter and scope the CMP and CKP for much less than $400, as that's only 4...
  16. DAVe3283

    LLY: Help Lly p0016

    I'm pretty sure they mean get something like this: https://www.amazon.com/dp/B012938E76 You don't need some insane multi-GHz scope, at idle the signals will be about 650 Hz. The scope I linked is over 10,000 times faster than you need for less than $400. You'll want to make sure you get...
  17. DAVe3283

    Oil cooling

    I'll probably be that guinea pig this summer if no one beats me to it. I'm really curious.
  18. DAVe3283

    Oil cooling

    I've followed your adventures closely, and I do realize you are in a hotter environment than me and tow on a bigger tune. But you seem to fight both coolant and oil temps, while my coolant stays right at 95°C for the whole hill. I plan to put a bigger oil cooler on this summer and see what that...
  19. DAVe3283

    Oil cooling

    I am most familiar with the LB7, and it will remain in MAF based tuning until the MAF fails (logically, not necessarily physically), then it still runs MAF based but instead of using the MAF value, looks up the expected airflow table. Went down that rabbit hole when my MAF physically failed and...
  20. DAVe3283

    Twins with Twins, Anyone?

    Looking sharp!
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