Adam
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Posts posted by Adam
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Well, hate to be a downer but this morning I decided it was time to move on with the Pathfinder. I found some major rust holes in the floorboard and the wiring is just way too much of a basketcase. I was able to pull off as many good parts as I could though.
So off it went this morning.
Don't know if I'll get another or not, but it was a fun ride while it lasted. That was the longest I've ever owned a vehicle.
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WOW!! I just read through this. So Cool!! Has there been any more progress?
Not since the weekend, between class and work I've been swamped.
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Double post
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Nice work
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Not sure how much energy I have to put towards this today, it's really hot out, and it's mentally taxing, but I've got most all the snipped wires isolated, and the good news is they all go to the main bundle of wires that heads up the dash, so it shouldn't be too difficult to figure out I think. I know one set of the wires will be going to the main relay box on the passenger side of the engine bay.
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ECU harness is eliminated now, with the exception of wires I felt needed to be kept. I kept the wire that goes to the transmission control unit, all wires associated with A/C, wires going to various relays, the MAF wiring (in case I felt the urge to use it), the tach wire, and the VSS wire. Might be some I'm forgetting, but that's decent progress.
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I finished pulling the dash out today, so I have full access to the wiring now, but man is it scary. I did find one error in my attempted rewire though, the alternator connector is currently wired to the ignition switch fuse instead of the battery. Whoops.
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I'll probably spend some time tomorrow digging through the harness... Not looking forward to it at all, but I really want my Pathfinder back on the road, it's been a year now. This is the longest I've owned one vehicle, but it's also spent about 75% of the time I've owned it parked
Which is sad, because I really love driving it, it's been fantastic when I've needed it most. I especially want to get it running because I got a Grasslinks 4x4 center link I want to try out. -
Should be able to power it now, just had to install a $1 transistor.
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Very cool! Good job getting back at it man! Are you planning to run maf sensor or map/iat? The fsm has really good wiring diagrams for the wd21 ecu so it shouldn't be too bad to retrofit, if u need any help deciphering any diagrams then let me know.
I've ditched the stock wiring for the engine, I wired the Megasquirt directly to the stock connectors. I'm doing MAP+IAT (and taking the manifold to my shop today to drill and tap for the IAT). I am going to have to figure out how to keep the dash/interior power working and how to get switched/fused power to the Megasquirt though. Here's where the Pathfinder sits right now:
I pulled the entire engine harness through the firewall. I had been trying to fix the old harness by splicing another Pathfinder's harness in at the firewall, but the wires didn't all match and it got much too complicated to actually repair. Ditching this and wiring the Megasquirt directly makes it a LOT simpler under the hood. I'm also still converting it to sequential ignition via LS2 coil packs. I've got the entire FSM in my OneDrive, had originally used it to wire the Megasquirt, when I was going to use the original harness.
Oh, and I found out yesterday my idle air control valve is dead, probably been dead for a long time. Not absolutely necessary for the Megasquirt, but will definitely make it more civil, so I've got to replace that. I had to modify the Megasquirt a little bit to work with the distributor's optical sensors and also work with the IAC (since it requires more power than the standard IAC setup allows on the Megasquirt). Lots of progress over the last couple days.
Oh... and yesterday I went to open the drivers side door, damned door handle snapped right off.
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Over a year later and I'm back at it. I manually repaired my Megasquirt, was really glad I could salvage it. I've been working all day on wiring it up to work on the Pathfinder. I've got most of the work done now, it connects to TunerStudio, the modules I've connected work, and I'm ready to start installing. Only thing is I've got to sort out the main harness, its in shambles right now, so I've got my work cut out for me.
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What was it that was keeping the pathy from running to begin with. You just said you got it running again and never said what it was that fixed it.
James
The stock ECU died. I never got it running on the Megasquirt, my Megasquirt needs some repairs, some of the traces came up.
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Ugh. Water pump just siezed up on me... Glad I have AAA and was close to my mom's.
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I literally just got my Pathfinder on the road again this weekend, it's been sitting for 9+ months in Dallas (at my mom's) while I've been living in Austin. I'll be able to resume working on it when I can get it back down to Austin (probably next time I come up to Dallas). Sucks not being able to make progress but keeping my life on track has been more important.
Any more updates on this yet? I like that coil on plug conversion.
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Wanted to toss an update out for this, I haven't abandoned it, just moved to a new city and started a new job and got a newer vehicle. Picked up a 2004 Golf TDI for daily driving duty. Moved to Austin and started working at Collings Guitars. The Pathfinder is still in Dallas outside of my mom's house, I'll be going back on the 7th to hopefully get more work done on this. I've been going back regularly since I moved on July 9th but I kept forgetting to bring my soldering iron. I've got some wiring I need to redo before I hook the Megasquirt back up to the harness, going to put the Megasquirt back in its stock case and turn the stock ECU housing I bought into a breakout box for it.
I got my OEM grill guard from Alkorahil recently too, so I'll probably go ahead and install that when I go back on the 7th.
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I was saying that since I know on a WD21 you get less power and lower fuel economy if you put in high octane fuel.
WD21's can be tuned to use higher octane fuel. I seem to remember a Conforti chip back in the day that did just that... Back when he was still making a Popcharger for us...
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New part didn't fix it, still have no spark. Considering I've checked the wiring between the ignition control module, the coil, and the ecu I really don't know nor care where to go from here. I'll just wait until I get the Megasquirt CPU back, at least then I'll have some idea of what is going on.
And before you say "check codes" I can't because I somehow don't have a shift lock release switch on my shifter, just an empty hole... Doesn't matter anyways, I don't drastically need it right this moment and don't want to continue throwing money at stock parts. Got a feeling it's the ECU that crapped the bed...
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Good news, I bought the igniter from Auto Zone and it has a lifetime warranty. Will be in stock tomorrow.
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Still no spark with the new coil... Igniter is the next logical step, still no spark and I've checked everything else.
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Good point!
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"780 CFM Holley four-barrel CARBURETOR on a special aluminum intake"..."rated at 370 bhp in early Corvette sales literature, but actually only sold as 360 bhp version at 6000 rpm and 380 lb-ft at 4000[7] (the NHRA rated it at 425 hp for classification purposes).
Just stop now. Please, for your own good. You're very wrong about this. I know older GM engines very well.
Even if he's wrong you come across as very pompous, pretty much all over this forum... You must be the smartest 17 year old in the world.
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I think it's just the ignition coil, I replaced it previously but broke the connector off so I had to put the old one back in... Ordered a cheapie from ebay in case the Megasquirt isn't done by the time I have to move on the 7th...
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Pathfinder won't start now... Doesn't seem to be getting spark... Really wish the Megasquirt cpu didn't die so I could be trying to get that to work instead of fiddle****ing around with the stock crap...
It was idling rough last time I started it and then it just died and wouldn't start again. I was low on gas and thought it ran out but now it has gas and there's pressure in the lines, just no spark...
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I would check the pinion out first before I just assumed replacing it. Pull the sensor off and see if there is any play in it I guess. I've never pulled the sensor off myself but it seems like a logical thing to check.
Megasquirting my WD21
in The Garage
Posted
I've got an 86 BMW 325e up in Dallas that is awaiting a much larger, more modern, more powerful engine (M54B30 for anyone who knows BMW's). Just need to get it down here.