Hey all:

I've been in a swap for my 93 4runner now for a couple of months now, and a couple of nights ago I started it up.

Here's what I got: 93 runner 5spd 4WD, 3.4L engine from a 2000 Tundra auto 2wd. I have an ECU from a 2000 Tundra 3.4L 5spd 2wd. I have a 4crawler 2" body lift. I did all the re-wiring myself.

Truck started right up, damn near redlined, then died. It would do this over and over. Seemed like a fuel problem to me. Well I broke down, bought a ODB II scanner, went home, wired up the plug to the computer, and tried to read the codes. All I got/get is unable to link error. I know it has power, since it turns on, and there's only 1 wire to the ecu, which I know is right. So that's really a major issue still to this day. Well I then suspected a power problem to the ECU, since I couldn't connect. Well after looking at the EWD's, I decided to install the EFI and C/OPEN relays from the 2000 into the 93, since there's some discrepancy with the two. So, if this is common knowledge, forgive me, as I search as much as possible before posting. After rewiring the relays, it ran fine, but it idled over 2K, even without the throttle on the body. I unded up removing the front TB factory set screw for the idle, and backed out the rear TB factory set screw as far out as possible, and the idle is still 1500K. I unded up bending the throttle cable bracket in so I could attach it, as the cable was way too short.

Well I've put over 400 miles on it, and at two different times, at low speeds, high RPM's, it stalled, spuddered, bucked. It regained power after reving it some. I sort of suspect my FP failing, or that I have to use the 2000 Tundra FP with the motor, and maybe my 93 FP is not sufficient for the 5VZ. It's pinging at higher engine loads, so I suspect a lean condition. I've cleaned my MAF with contact cleaner already. My O2's are new. Gas is good 89. New fuel filter. Any input here would be appreciated.

My "Check Engine" light is on, and I definitely suspect that there is still something majorly wrong, yet not being able to connect to the ECU with the scanner is frustrating and I'm unsure as to what to start with. Fixing the communication with the ECU would be awesome. Also, I've verified the circuitry of the plug, and the scanner works fine on other OBDII cars.

4WD indicator won't turn on. I've traced the wiring twice, and all looks good to me. I wonder if the bulb is bad. I'll check the bulb, but wondered if there's something I've overlooked..This really isn't a major thing, just something bothering me. Low priority here.

Well that's about it. Sorry so long, but I just want to be clear and explain it in as much detail as I can. Thanks to all in advance for replying, and thanks to all of you who've helped me thus far (especially 93CORUNNER)

It was my understanding that even the 22RE fuel pump was adequate for the 5VZFE (in fact I *think* its the same as the 3.0 fp), but it does sound like you are having fuel starvation issues.

As far as mixing and matching ECUs and motors, and addressing any wiring stuff, maybe you need to go to confession to Father Caskey at Our Lady of Off Road Solutions. He will give you absolution and some penance to do that should set you aright maybe. <img src="/forums/images/graemlins/shame.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" />

That's assuming he can do long distance diagnosis, which may not be possible.

The OBD II problem is the pin out on the data link port is incorrect. Mine did the same thing an after looking at the ewd the pin out was wrong. It is proably on pin 2 but should be on pin 7. Check your ewd. After I changed the pin around it linked up and passed.

Bill is right on the fuel pump. I also have a 93 Runenr and I been using a older celica pump with no problems for over a year.

well using a 5spd ECU on a Auto engine could be a problem. I know toyota always using 2 different TPS sensors... 1 for auto and 1 for stick. so that's probly why it redlined.

You're high idle and lean condition problems sound to me like you have the vacuum hoses hooked up wrong. I'd definately check vacuume hose routing before I cracked open the throttle body

You're on your own with the wiring. I have a hard enough time figuring that stuff out when it's right infront of me.....Impossible to figure out from here....sorry

Thanks everyone for replying. I haven't had much time lately to take a further look at the issues, but I'll do so soon, if not tonight and report back anything I find. I think I'd like to replace the fuel pump soon, as I still think it's a potential problem, if not a current one. I'd like to order a new one, as pretty much everything else in the truck is new now. I just don't know which one to order, since it seems like I may have a choice as to which one to get. Hopefully I'm making myself clear here. Which fuel pump should I get to replace my original 93'? Also, has the A/C issue ever been worked out on the 3.4L swap?

Shoot Mike Caskey (offroadsolutions.com) some questions and he might be able to assist. He makes some custom parts that make it a breeze, and buying at least something from him makes his time answering your questions worthwhile.

A/C issue? What A/C issue? <img src="/forums/images/graemlins/confused.gif" alt="" />

Yes....errr...atleast I think mine will. I re-used my 3.0L A/C compressor and just switched the pully's. I still need to get my system recharged....but it should work...I think.....it worked before and I haven't changed anything. And, my high idle does kick in when I (accidentally) hit the switch (with no freon in the system...oops!).

Dood, you didn't illuminate me on the A/C problem... share, share.

What problem?

When I did my swap I took the A/C compressor out....drainaing the system in the process. I just haven't had it recharged yet and therefore don't know for sure if it works. I haven't changed any of the components, so I don't see any reason to think it won't.