i have a o1 tacoma and i am having trouble with my truck starting. it will start for a second and die. if i leave the key in the on position for 45 - 60 seconds it will start just fine. after it starts it runs perfect, its just getting it started. if you have any suggestions that would be greatly appreciated

 

chg. the fuel filter...............test the pump.

 

i have checked and replaced both, could it possibly be my sending unit or my efi relay

 

also my check engine light is not on, if i hook it up to a diagnostic will it still through a code

 

It may be *pending* a code, meaning the ECU is getting errors but it's waiting until it gets those errors X times before the light kicks on.

An OBD II reader will pick up pending codes.

 

Fuel Injection Relay - Definately worth checking. Bad relay is often a no-start at all too.

 

Do you have an alarm? I had a problem like that on my 4Runner and it turned out to be my alarm. It was all messed up. I didn't even have the remote or anything.

Just a thought.