i have a 1992 toyota pickup that mechanics can't figure out what is wrong with it so i figured id bring it to yotatech!!!! what happened was i originally had the 3vz engine in it but the engine's 6th cylinder only had 40 lb compression so i was like 'ok ill just change the motor' well i did. i put a 3vze engine in it that ran like 6 months prior. well i dropped her down and she started n shut off. u can pump the gas and itll run. start naming parts. i think i changed about everything but the fuel pump but why would the fuel pump go out right when i change the motor. what else could be wrong? injectors, throttle body, tps, fuel pressure regulator, motor wiring harness, and even the fuel rails have been changed... please please help!

 

Find a new mechanic that has a clue.

:wabbit2:

 

if you stay on the throttle does it stay running my guess would be earthier wiring or a vacuum leak!

 

i took it to 2 mechanics. if u keep it on the floor it wont run. if u pump it it does which i kno makes no sense at all what so ever but thats what it does.

 

I take it you had the air intake off to make sure that it is not full of a mouse nest or being used as acorn storage.

Had that once from a vehicle that sat . I would look for cracked vacuum hoses or poor fuel pressure

 

the hoses aint cracked and its gettin loads of pressure to the rails. ill recheck everything out 2mro even tho its like 20=somethin here.

 

btt plz

 

I had the same issues with mine. The cat was plugged and it had a bad alternator. Cleaned the cat and changed the alternator and now it has great power.

 

cleaned the cat a few months prior to the engine gettin put in. never checked the alternator. never suspected that it would be the issue cause it starts and runs when u keep pumpin the gas... ill check it. anything else guys?

 

sounds kinda like cold start isnt shutting off and its causing the engine to act like its still running cold check it make sure theres no corrosion ntf with that 3.0 but have seen that on a 22re

 

what year did the new 3.0 come from? did you swap the engine harness over from your old 3.0 or use the one on it? what do you mean pump the gas? like you move the gas pedal? try this, jumper the fuel pump so it runs constant with key on. To do this open the diagnosis plug in the engine bay and using a paper clip or piece of wire jumper the 2 terminals that say B+ and FP. Then try starting. Also have you checked for any stored codes to the ecu? Might want to do that as well.