2nd gen injectors are not recieving singnal, wont run

[inzo]

Hello, My 2 dr 2nd gen w/ a v6 starts up and shuts off right away if you spray carb cleaner or either into the throttle body it does run, but the injectors are not recieving a signal for them to open up..

Replaced, fuel presure valve, fuel filter,

checked out ECU and it is sending out a signal... no codes showing.
switched ecu into another 4 runner and it worked fine.

possible problem with ingiter, but I tried one from the junk yard from a different year and no change.

please if onyone could help...

 

[willyt4r]

jump the fuel pump

have you jumped PB to see if it starts and runs? Could be a missing signal from the AFM.

 

[inzo]

checked out the FP and it checks out proper presure.
what is the "AFM" "Air fuel meter"? where is it located?

 

[inzo]

what is a "PB"?

 

[willyt4r]

link to help

the FSM is your friend
http://www.ncttora.com/fsm/1990-199...cheers:995/954runne/eg2/mfisyste/fuelpump.pdf

 

[RpzInc]

Hello, My 2 dr 2nd gen w/ a v6 starts up and shuts off right away if you spray carb cleaner or either into the throttle body it does run, but the injectors are not recieving a signal for them to open up..

Replaced, fuel presure valve, fuel filter,

checked out ECU and it is sending out a signal... no codes showing.
switched ecu into another 4 runner and it worked fine.

possible problem with ingiter, but I tried one from the junk yard from a different year and no change.

please if onyone could help...

you should check with a volt meter to see if the ecu is sending signal. if it is and the injectors never see the signal than the wiring is your problem.
the white/red wire with tape on it is the one you want to test. set your voltmeter to test a/c current. test at the ecu then at the injectors. fyi if one fires they all fire.

 

[Iroke17]

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