Hi, I have a 3vze in my 94 toyota pickup and whenever the engine is cold and i drive to the store, the truck seems like it starts to pull or lose power, and usually does it when the engine is cold... i changed the mass air flow sensor but it wasn't it, i kinda thinking it might be the fuel filter..? It runs fine after the tem goes in the middle. or maybe the injecters... cause it bought a injecter cleaner that goes in the fuel and it kinda helped...

Any suggestion it what it could be?

 

when the Toyota engine is cold, it's running the cold start fuel injector (found in the intake manifold)

it adds more fuel (which i hate... love or hate thing).
that could POSSIBLY be dirty/ stuck open or closed.

so definitely clean injectors (regular or cold start) will help.

 

Check the coolant temp sensor, Cold start timer switch and the cold start injector. Mine did the same sh!t except it would turn off on me if i hit the gas and let go. Id let it warm up before i went anywhere.

I hated it but got used to it. Ima figure out what the problem is as soon as i get my motor back in one piece