jasond

Ok, I think that I have them all working again. Let me know if they dont

881stGenRunner

Awesome build thus far man, im diggin it. Can't wait to see some more fab work be done to it.

n4ynu1010

YEP ! Cool ! Nice work

jasond

Thanks guys, I have been doing this REALLY slow, but I'm hoping to get it done by the end of this month.

jasond

Sorry it took so long to add to this, but I got the truck done and have been just enjoying it for the past few weeks. I now smile from ear to ear anytime I need to step on the gas, its just amazing the power difference. Today while I pulled up in my driveway it turned 199,999. I figured that I would take some pics of the odo and the rest of the truck....

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Here is the double transfer case shifters and how they ended up in the interior

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and the finished engine pics, the last two are of the fuel filter placement

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I plan on putting a stock type air box on it later on, but for now this works

Spence1016

w0w man thats some real nice work, how bout some pics of the overall truck. And also of your scar if you have one lol. How many miles were on the 3.4 when you got it? How long until the s/c and sas? Has it been offroad yet?

mt_goat

Great Jason! What's that box by the fuel filter? You'll have to post the details on the homemade O2 simulator too.

jasond

The engine that I put in there was supposed to have only 30k miles on it. I dont know that for sure b/c I didnt pull it, but when I pulled the oil pan to change it out for the 3vz it looked clean in there.

The s/c will be the next thing, maybe by the summer I will get it put on. The sas is far off yet. I have the axle, but it needs to be built. I also want to find another e-locker for the front so I can have one on both ends.

I havent wheeled it yet with the 5vz, but I want to so bad. The closest I got with this motor so far is getting through all of this ice that we had here lately.

The box next to the fuel filter is the solenoids for my winch, i put them under the hood to help protect them from the weather.

Mt_goat was nice enough to send me this link:

http://www.vfaq.com/mods/O2bypass.html

I went to radio shack and picked up the resistor and capacitor and a little project box for well under ten dollars. Got looking at the diagram and figured out that the blue wire in that diagram is the signal wire to the ecu and the white wire is the ground that the o2 sensor uses. I put together this box so that it went with the top diagram, still using the o2 sensor but just modifying the signal. Looked at the signal after I got all finished with it on a scantool and it looked dead on with what it should. Still has a waveform just the peaks arent as high as the before cat o2 sensor. I drove approx 30 mins on the highway one way, killed the truck at a gas station (2 trip detection), started it back up and drove home. Checked to make sure with a scan tool and there wasn't even a pending code.

Radio Shack Part Numbers:

Resistors (pack of 5, but you only need one)
271-1134

Capacitor
272-1055


Something else that I thought I would share with you guys is that I used an early ecu (98 taco) with the later model injectors (slightly larger). They seem to work very well together as this motor has more 'pep' than the other 5vz trucks that I have driven. The fuel trim goes into the negatives during normal driving (not enough to set a code though), but when you step on it that motor is happy

jasond

Thanks for the compliment and I will try to get some more pics up later on.

jasond

Here are some pics of he truck as it sits now

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and my favorite sticker

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mt_goat

Interesting, how negitive are the fuel trims?

jasond

About -10%, the ecu usually sets the code at -15%

nate V

Any more to ad to the o2 bypas
That is cool and i was wondering about that the other day
sick looking truck. that is a huge bumper!! you make it?

jasond

Yeah, I made the rear bumper. If your talking about the front, that is a TJM. That o2 thing really isnt so much of a bypass, just a modification of the signal. You need the o2 sensor to give you the sweeping signal and to produce the voltage that it does.

I found out later that some guys did the second one on that site and it worked for them also. My biggest worry is trying to bypass the o2 heater w/o burning up some wiring. I would advise that if you do the second diagram that you just leave the o2 heater wires still going to the sensor and just modify the signal wires instead.

jasond

Wanted to make a note also that the radiator that I got at O'reillys is an aluminum radiator, a big plus for a decent price.

mt_goat

Moderators, this thread got missed in the big move to the 3.4 swap section.

luxdlx

All that and brain surgery too. Damn dude, your an artist. Good job.

jasond

Thanks, I appreciate it.

mt_goat

Hey Jason, I was just looking at some pics I took and realized your exhaust doesn't cross-over until way back. Where did you put your front O2 sensor?

jasond

I put both of them (before and after the cat) in the right bank next to the transmission.