toyminator2000

It could be ABS stuff. Depending on the year of the car some of them had separate ECU's for the ABS system and some were integrated.

Here is a pic of one of my LS400 ECU's its a 1993 model. Its a lot different than yours.

highrideTOY

Yea I have the wiring diagram book for the 93. It has helped with identifying stuff.
That seperate plug has the fuel pump and a couple other thing in the wiring I need I believe. Can I wire it up without the plugs and be ok? Or will there be a problem? I'm using the 3.0 fuel pump. Is there a way to straight wire it along with something like another ignition switched trigger wire?

toyminator2000

Not sure. I paid an expert to do my wiring. I know he wired mine up using the Lexus fuel pump ECU and wired it on the high speed side. Right now I still have my stock fuel pump but I bought a Walbro to install.

highrideTOY

ok i got some work done on the wiring today. i still have trouble with the wiring but i'm goin to try and use the 3.0L afm. I'm also gonna try and use the battery terminals and wiring from the truck. we'll see how well that goes.

highrideTOY

ok i think i have all the wiring i get done outside the truck. we shall see if i can get it in the truck tomorrow.

RMA

so did you find the diagram for your ecu .. whats the part number..
is that the way it came , no wires cut and one connector missing.

usually they have the injectors on one of the 26 pin connectors and the fuel pump realay on the other 26 pin connector. so where are these on your ecu.
dude why are you wanting to use the 3.0 afm i really dont think thats going to work.
you can use some of the wiring from the truck , the lexus has the battery and afm on the opposite side.

highrideTOY

yea i just cross referenced the 90 model diagram from lextreme with the book i got off ebay.


theres the model number and yes that is the way it came.

yes the fuel pump relay, efi, and battery wire are all on the that fourth connector.

the afm's arent that different suprisingly. I'm goin to try to and see if the afm will work anyway. I also want to keep the battery in the same place so we'll see how well that goes. lol

RMA

Dude your missing plug E11 .. and yes you harness is incomplete .. that plug has the small gauge wires in it .. Batt , oxy sensors fuel control .. ETC .. that Plug is separate from the engine harness . those wires go to J/B No 3 then come around to the computer.
J/B No 3 is under the dash right in the middle of the car, behind the stereo.
who ever took the ecu and wires out left the plug attached to the body harness and did not cut it off and give it to you.
go to a wrecking yard and find that plug man ...

toyminator2000

The engine will run with the 3.0 AFM but you will be choking it down. The 1uz AFM is the largest OBDI AFM that Toyota made. Even the Supra guys upgrade to the 1uz unit. Actually the engine will run pretty good without a meter at all. I think I'd do that before using a 3.0 AFM.

highrideTOY

ok, first i got the harness a long time ago, so gettin the plug out is impossible. I also can't find a car within 100 miles of me. I'm goin to try and get it to work without a plug until i can find one.

well when i find a car and a junkyard, I'll get the afm while i'm there. We see how it turns out.

birdduck

the 4.0 maf contains the iat sensor... that plug is needed, i only used a few wires from it though.. go to a lexus(or toyota) dealer, bring your ecu, go to parts and tell them the year/ model of the car they can order that plug for you it will be special order so you will have to wait for it, but it should be cheap, once you have the plug unpin on of the several wires that are not bing used fromt he other 3 and place it in the correct pin on the the new plug and vuala! your done.. i work next to lexus and i can walk over there on tuesday and find out for you.. if there is no lexus dealer around you i can order the part and ship it to yeah

highrideTOY

hey if you can figure out the price for it and the maf? i would really appreciate it. I don't have a lexus dealer anywhere near me.

birdduck

well a maf from the dealer would be more expensive then another engine... but i can check some the yards around here for one.

highrideTOY

ok i got the tcase back together. sorry forgot to get a pic. I'll be sure to get pics of putting the tcase on the tranny with the adapter. I don't have much left to do. I'll make a list of whats left for whoever is following this.

1. massage firewall and grind down ebrake stud, so engine will can be pushed farther back. make adjustments to the motor mounts so engine can slide back.
2. finish integrating the harness into the trucks wiring.
3. find some headers that will actually work.(i'll explain at the bottom)
4. cut core support for easier testing of motor.
5. find where the tcase shifter will be in the truck and cut the hole for it.
6. test fit motor for the last time before permanent installation when headers arrive.

that is the list for next two weekends i guess. yes i only get to work on this on weekends.



ok i got my headers the other day and well they didn't even come close to fitting. There is no way they came from a 4.7L 2uz. their bolt patter was way off and so was the port size. I'm goin to look into getting some different manifolds today and see what i can find.

RMA

Can you take some pics of the manifolds they sent you .. maybe they are the 5.7 manifolds

highrideTOY

sorry i don't have any pics of them, but here is a link to the ebay listing.

http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT

RMA

yea those are the 5.7 manifolds ..

you need 2000-2004 i believe

the 05-06 look almost the same but they have and extra tube on top so dont get those .

RMA

they look like these .
http://cgi.ebay.com/ebaymotors/4-7-T...item3f01135ccd

highrideTOY

dude the 5.7 didn't come out until 07'! this asshat sold me stuff that was miss advertised. I'm gettin my money back.

i ordered a set of pacesetter headers for my tundra, so i'll use the stock manifolds off of it for the 1uz. haha

birdduck

hey got some prices for ya... so maf is..... 1264.73 ouch!... and that plug is only 10.00
and i can get it here in 3 days, and prolly another 3 to get it to you.
let me know on the plug. and i would go ebay on the maf..