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How is the fuel pump wired?

If it only costs $25 then it's safe to assume it won't by-pass the Lexus immobiliser. ;)

Change the front seat, they weigh about the same as two wheels/tyres each!

The IACV need cleaning? http://www.youtube.com/watch?v=qzI6798Xpzk

I use these guys..... http://www.magnecor.co.uk/default.htm

Looking at the socket and the blue I.D. plate, you have a LS400 transmission.

If you're fitting the 1uz into a different vehicle, then it's just the four ECU plugs that you need.

Yes you can use the ECU from a '94, but you'll need to swap the IGT wires. pins 24 & 25 (IGT1/IGT2) on the 34 pin plug, just snip and swap them over.

Weired, the O2 sensors always run from the 28 pin plug. :confused:

http://www.lextreme.com/PDF/96ls41.pdf http://www.lextreme.com/PDF/96ls42.pdf http://www.lextreme.com/PDF/96ls43.pdf http://www.lextreme.com/PDF/96ls44.pdf

If your spare AFM didn't improve the issue, then maybe the problem is with the wiring in that area?

Yes that should be enough. When the ECU is reset, it will take a number starts/runs for it to learn everything again, so take it for a short drive to get the engine up to temp and check for codes again. Is the AFM in good condition?

27 and 29 are sub O2 sensors not the main ones in the manifolds, so if you haven't got them, ignore those codes. 78 is fuel pump control. Again ignore that code if you're not using the fuel pump ECU. Did you clear the codes after fitting the new parts?

http://www.ebay.com/itm/1-90-91-92-93-96-LEXUS-LS400-SC400-SC300-IDLE-AIR-CONTROL-VALVE-IACV-22270-50010-/230980181879?pt=Motors_Car_Truck_Parts_Accessories&hash=item35c77ddf77&vxp=mtr

Sorry, forgot to add.......Bridge terminals E1 and TE1 in the diagnosis box on the engine, switch on ignition and the light should blink.

You could check yourself with a 12v bulb. Apply ignition 12v to one side of the bulb and connect the other side to the 'W' pin at the ECU. (Yellow/red wire?)

Done the diagnostics yet? Until you've done that it's a bit of a guessing game over the interweb.

Kickdown and overdrive wires need to be earthed to activate them.

+B is an ignition feed and E1 is ground so I guess a fuse has blown somewhere?

Coil or igniter on one bank not working? Any codes from the ECU?