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ExplodingSims posted:The recovery and Rehabilitation of Dave is perhaps the greatest achievement of the thread. Also that thing you did with your thumb
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Dec 7, 2017 21:44
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| # ? May 10, 2024 08:48 |
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Hey Sims do you still have the old engine from the trukk?
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Dec 15, 2017 05:58
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Old man river scrapped it in Nebraska
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Dec 15, 2017 13:37
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Yeah, when Daddo purged all our scrap from his land he also scrapped the engine and all the stuff in the van. RIP my engine stand. We hardly knew ye. 
ExplodingSims fucked around with this message at 14:36 on Dec 15, 2017 |
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Dec 15, 2017 13:48
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Aww, I donated money years ago to the project hoping to get the crankshaft so I could make a thing out of it.  No matter, went to a good cause.
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Dec 15, 2017 21:14
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So, since this thing has been running poorly, I decided to take another look at the wiring. As you may recall, Dave go it running, but uh, left this crime against electricity behind:  So I yanked it out, chopped it up, and started from the beginning:   It really, really, helps to have the factory manual for this. What kind of monster uses the same color to control three different things? Anyways, got it cleaned it up, and jammed it back in:  I know it still looks like a mess, but that only because I didn't mount the fusebox anywhere yet. Once that's secured I can hide the rest of the wires Oh and I also got a new ECU, and made a bracket to hold it up inside the dash for now.   So did all that, went to go crank it up, aaaaaand found the fuel pump not pumping. I tried it on a different circuit just to verify it was getting power properly, and no dice. Guess I'm getting a new fuel pump now. I was able to at least get it to start with some starting fluid, and it ran for a few seconds, so ti's got that going for it at least.
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Dec 17, 2017 21:58
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Lmao double check the distributor if you used a factory harness it uses an oil pressure cut out with fuel pump relay All of which I sort of......bypassed
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Dec 17, 2017 22:01
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I love those little wire tag things.
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Dec 17, 2017 22:14
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So good news, I hit the fuel pump really hard and I got it to start running. Got the engine to fire up, and it's still not running great though. Kinda ran out of daylight so I stopped my diagnosis but so far: MAP sensor still kills the engine. Idle is pretty rough, and it sounds like there might be a timing issue Still occasionally will run VERY rough and then shut off.
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Dec 17, 2017 23:50
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ExplodingSims posted:it sounds like there might be a timing issue You know the rule; when you think it's ignition it's fuel, and vice versa. And, well, ExplodingSims posted:I hit the fuel pump really hard and I got it to start running.
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Dec 18, 2017 07:25
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This engine was always intended to be temporary anyway, correct? And IIRC the van didn't run that great to begin with? I mean... ultimately it's a TBI SBC, which is about as simple as it gets for EFI, but it may just boil down to a lot of worn out parts (like that fuel pump  ) that are combining forces to piss off the ECU.It's weird that plugging in the MAP kills it. The MAP sensor has been swapped already, right?
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Dec 18, 2017 07:43
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The van drove fine all the way to the killing fields IIRC, so it's something that has been done to it since it got its heart torn out.
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Dec 18, 2017 09:08
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kastein posted:The van drove fine all the way to the killing fields IIRC, so it's something that has been done to it since it got its heart torn out. Yeah i dunno, only the finest of work was done in that operating theater
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Dec 18, 2017 17:22
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Dec 19, 2017 18:11
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Yu-Gi-Ho! posted:This engine was always intended to be temporary anyway, correct? And IIRC the van didn't run that great to begin with? Yeah, that's why I'm trying not to spend a ton on money on it, but still, it'd be nice for it to be something more than a street decoration. The engine ran great in the van. The transmission in that thing not so much. I ordered a new fuel pump since they're apparently super cheap. So we'll see if that does anything. In the meantime, have some videos. Maybe you guys can figure something out from them: https://www.youtube.com/watch?v=aaWphHb15n0 https://www.youtube.com/watch?v=1qUPpjxafKM https://www.youtube.com/watch?v=G0IxyyWId2Q https://www.youtube.com/watch?v=CO2MRQBxTqo https://www.youtube.com/watch?v=O4yvFOaIqEE 
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Dec 19, 2017 23:46
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Stupid question: have you tested or replaced the MAP? That exhaust just kills me.
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Dec 20, 2017 00:10
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Darchangel posted:Stupid question: have you tested or replaced the MAP? And yeah, the exhaust is ridiculous, but there's not really a whole lotta other options there
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Dec 20, 2017 00:11
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I mean there are but noooooooo
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Dec 20, 2017 00:12
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Did you check the map wiring for 5v signal and ground? Possible vacuum leak? If it doesn't see a map it might have a tps only fuel table that would ignore the leaks but freak out if the map came back reading wrong.
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Dec 20, 2017 00:15
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ExplodingSims posted:Yeah, I replaced the map like 2 weeks ago. Well, poo poo. Make sure it's getting the right voltage, and putting out the expected signal, I guess? You just redid the harness, so the wires are correct in theory. Grounding problem? It's got to be something simple. Like STR said, it's a GM TBI - EFI doesn't get much simpler, and the ECUs are pretty well understood (and hacked). DICK DICER posted:I mean there are but noooooooo Puller headers all the way. Or *maybe* fenderwell headers, with cut-outs. e: f, b.
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Dec 20, 2017 00:17
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I can’t quite tell from your video but it looks like what your calling the MAP is in the location of the EGR solenoid. Could you post a closer picture? I think the map is further back closer to the distributer.
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Dec 20, 2017 00:22
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honda whisperer posted:Did you check the map wiring for 5v signal and ground? Darchangel posted:Well, poo poo. Make sure it's getting the right voltage, and putting out the expected signal, I guess? You just redid the harness, so the wires are correct in theory. I'll go back and check. I like, quintuple checked over the wiring, and it's a new ECU, so it should be working in theory. We shall see. Also, as much as I did like the sound of the open headers, I REALLY do not want to cut into the fenders or hood, since those are basically irreplaceable. rdb posted:I can’t quite tell from your video but it looks like what your calling the MAP is in the location of the EGR solenoid. Could you post a closer picture? I think the map is further back closer to the distributer.
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Dec 20, 2017 00:26
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ExplodingSims posted:Also, as much as I did like the sound of the open headers, I REALLY do not want to cut into the fenders or hood, since those are basically irreplaceable. 
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Dec 20, 2017 00:28
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I seem to recall those fenders being removable...
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Dec 20, 2017 01:48
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rdb posted:I can’t quite tell from your video but it looks like what your calling the MAP is in the location of the EGR solenoid. Could you post a closer picture? I think the map is further back closer to the distributer. Ok, here's a better pic of the area in question:  MAP is the black rectangle in the lower left EGR solenoid is right behind it IAC is under that
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Dec 20, 2017 22:43
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Ok so question What if i pooped in there
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Dec 20, 2017 22:56
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DICK DICER posted:Ok so question Probably adds ten horsepower
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Dec 20, 2017 23:00
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ExplodingSims posted:Ok, here's a better pic of the area in question: That is different than the trucks. Learned something today. The vacuum lines seem to all be on the correct ports. I assume you have double and triple checked the wiring on the MAP by now. Just out of curiosity if you unhook the vacuum line from the EGR does it still die when you plug in the MAP? Have you been able to read codes from this ECM? E: is the coolant temp sensor hooked up and/or any vacuum leaks? rdb fucked around with this message at 23:29 on Dec 20, 2017 |
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Dec 20, 2017 23:12
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ExplodingSims posted:I'll go back and check. I like, quintuple checked over the wiring, and it's a new ECU, so it should be working in theory. We shall see. I've seen new parts that were broken out of the box and wires that were connected to the right things with no connection. Use a multimeter to check for ground, 5v, and the signal voltage right at the map with it plugged in and power on, not running though. Just gently slide a pin through the weather seal on to the back of the connectors pin and measure off that. If it's good at the map check for signal voltage at the ECU pin for map signal. If all good we hook a vacuum gauge inline with the map and confirm voltage matches measured vacuum. If not good post where it's broken and we'll start hunting the break.
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Dec 20, 2017 23:30
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Completely unrelated to the Trukk, but I love the dissonance in your username/avatar combo.
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Dec 21, 2017 15:20
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Do you have a laptop and aldl to usb cable with WinALDL? That’s what I use to test my stolen EFI. You can see all the voltages and see that things work really easily.
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Dec 21, 2017 18:08
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DICK DICER posted:Ok so question It’s a biodiesel now
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Dec 21, 2017 18:44
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DICK DICER posted:Ok so question https://imgur.com/a/WgWeD
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Dec 21, 2017 18:58
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StormDrain posted:Do you have a laptop and aldl to usb cable with WinALDL? That’s what I use to test my stolen EFI. You can see all the voltages and see that things work really easily. Yeah, you need to work through all the EFI components and check the voltage or whatever at the component is correct and then that it is getting back to the correct pins at the ECU too. When i first wired up my truck i managed to get the TPS backwards so it went 5-0 not 0-5 and got the coils mixed up on my idle stepper meaning it didn't move properly. you should also buy a cheap inline fuel pressure gauge too and check EFI basics like this. I had a blocked return line which made my fuel pressure go up from 35psi to 100psi. This makes wierd things happen...
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Dec 21, 2017 19:03
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I had a similar issue with my TBI van that ended up being the knock sensor. There should be a wire in the ignition computer you can ground that'll bypass computerized ignition control which will confirm/deny the knock sensor as an issue.
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Dec 21, 2017 19:39
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Darchangel posted:Completely unrelated to the Trukk, but I love the dissonance in your username/avatar combo.  Funniest part it was bought for me in a games thread.
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Dec 21, 2017 23:58
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https://indianapolis.craigslist.org/cto/d/1953-gmc-2-ton-dump-box/6432238382.html Some inspiration or soul crushing economic reality
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Dec 24, 2017 15:14
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Holy poo poo, I binged this whole saga over the last week. Words can't describe. 
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Dec 27, 2017 04:58
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Elephanthead posted:https://indianapolis.craigslist.org/cto/d/1953-gmc-2-ton-dump-box/6432238382.html 
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Dec 27, 2017 17:24
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| # ? May 10, 2024 08:48 |
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It's the journey, not the destination...
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Dec 27, 2017 17:46
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