today i replaced my 3vze ecu because of previous shifting problems that it fixed but it decides to stop running all of the sudden when we check and have no fire ? any ideas we have voltage on the coil. But idk how to check igniter
thank you

 

You can't check the ignitor. Here's the FSM troubleshooting procedure: http://www.ncttora.com/fsm/1990-1995...e/onvehicl.pdf

What do you mean "have no fire"? Have you used a timing light to check for spark pulse on any plug wire? Is there fuel on the plugs?

 

we pulled the coil wire off the distributor and stuck it next to the frame on a good ground with no fire..... i will check into that link thankyou

 

when the truck is cold it will fire up and run and you can drive it as long as u want nut when u shut it off it wont fire back up im thinking fault in new ECU , igniter , or coil i believe coil is good tho as it dont leak any ideas? i appreciate it

 

Sounds like a bad coil to me. Running when cold but cutting out/quitting at running temp is a common sign.

 

but i drove the truck for 30 miles and it didnt miss hesitate spit or sputter or nothing but as soon as you cut it off and try to restart it has no fire from the coil pack? i really thin k its the computer as it didnt do it till i replaced it you know?

 

What exactly was it doing for you to replace the ecu? Normally that's one of the last steps I'd take as far as fixing a problem.

As far as the coil being bad, you could have an open in the coil windings. As long as it is running, you could have a good connection but once you shut it off it loses contact. Try tapping on the coil with a small hammer or screw driver handle as you try to start it.

 

new update:called parts store where we got it and the guy said the computer needed to be returned and flashed for my truck? anyone ever heard of this?

 

yota-somehow it got shorted out i still dont know how.... but it was making the transmission act stupid its an automatic and when it went to shift from first to second the engine would die and if u went to fast in reverse it would die lol

 

The ecu shouldn't need to be flashed. That's mostly an American car issue. Just as long as the part numbers matched exactly you should be alright.

 

check the efi relay it made mine not fire

 

i will check it thanks yota v6 and idk about the flashing part ive never heard of it

 

small update we decided to try another ECU as it would be free to replace first and may fix this issue but i wont know untill Wednesday or thursday ill keep yall updated on what happens

 

replaced ECU and problem seems to be fixed hopefully thank you guys