Topic: please help 3.o nightmare

[jeff22r]

im putting a 93 3.0 in a 90 4runner and for some reason im not getting fire to coil. ive already changed  my distreb, oil sending unit,coil pack,computer,block full of sensors under intake,alternatefrom 90 to 93! what next??? the whole wiring harness plz someone tell me a better way

[Steve_925]

start searching grounds

[Bobby Hunter]

check afm too

[jeff22r [OP]]

start searching grounds

ill re check um i guess thks for all the help

[toyrokcrwlr]

there is like a fuse/relay type thing above the fuse box next to the door buzzer check that!
there is also a relay on the passenger side above the ecu you have to take the glove box out to get to it

[jeff22r [OP]]

there is like a fuse/relay type thing above the fuse box next to the door buzzer check that!
there is also a relay on the passenger side above the ecu you have to take the glove box out to get to it

ill check that tom, thks i didnt evan look at it today it had my pissed! but i checked all grounds and there all good.

[joeycool00]

did you try the air box there is a flap in there if it dosent sense air flow it will not turn on, and check the fuel pump relay under the hood, its the closest round silver thing with a bronse dot atop of it on the passenger side by the battery, the other relay facing the driver side is your fan relay. if its loose or bad you dont get spark!

[jeff22r [OP]]

did you try the air box there is a flap in there if it dosent sense air flow it will not turn on, and check the fuel pump relay under the hood, its the closest round silver thing with a bronse dot atop of it on the passenger side by the battery, the other relay facing the driver side is your fan relay. if its loose or bad you dont get spark!

theyre not loose but ill check um again. i noticed the relays look differnt on the 93 and 90 could that be my promb?? i was thinking  relays where pretty much all the same concept though.     thks for all the help

[86bobbedtoy]

try manually opening the gate on the mass afm.
also pull out the efi relay and use a jumper wire
jump it across diaginally, theres 2 ways but only 1 will work.
the other might pop a fuse, it it does replace the fuse
and try the other way.

that manually kicks on
fuel pump
igniter
injector circuit

[jeff22r [OP]]

try manually opening the gate on the mass afm.
also pull out the efi relay and use a jumper wire
jump it across diaginally, theres 2 ways but only 1 will work.
the other might pop a fuse, it it does replace the fuse
and try the other way.

that manually kicks on
fuel pump
igniter
injector circuit

thats prob it b/c im getting power to my coil but not igniter. ill try it and let u know thanks

[jeff22r [OP]]

no such luck??? has anyone ever put a 93 3.0 in a 90 4 runner before?  i think my problem is in the wiring somewhere b/c my 90 slung a rod so i bought a great running 93[fram and body rusted out]and dropped that motor and tranny in my 90 runner.  i never would of thought thy would be that differant!! any new ideas greatly appreciated

[toyrokcrwlr]

which ecu did you use?  did you leave all the wire harness that is attached to the 93 motor or did you reuse the harness from the 90 motor, because i have put a 92 v6 truck motor in a 1988  truck, but never fool with a 4 runner, when i did this swap, i took every thing that was in the 92 truck including all the vacum crap and the ecu and it works fine, it be kinda hard to mix 90 stuff to a 93 motor

[jeff22r [OP]]

figured it out!!!!!!!!!!!!!!! its just what i was afraid of the wiring harrness's are completly differant!!!the plugs are the same but wrong wires in wrong spots!! well another lesson learned the hard way. guess ill take the intake off and rewire my baby. thks for all imput!!!