Truck dies when warm starting

My truck does this weird thing where it dies the second time I start it. I'll explain better with a scenario. So I leave my house to go and get gas. Truck gets warm and does fine to get there and the cold start is fine. Then, after I finish getting gas and go to start the truck, it'll idle super low. Like 200rpm low. Then if I don't give it a hard rev in park it'll die. Sometimes it'll even die after I rev it up a bit. I have no idea what it could be and it has been happening for a while. And it only does this while its warm. Does anyone have an idea on what could be causing it?

 

Only after you fill up with gas?

 

I had a similar issue ended up being a bad injector on cyl6 it progressively got worse until it would cause misfires when started warm.

 

I had a similar problem with mine. I cleaned up the IAC (idle air control valve) and it's been fine ever since.

 

No not just when I fill up with gas. Just anytime I turn off the truck and start it again within like five or ten minutes of it being shut off. Key-Rei, how would I diagnose it being a bad injector? And tacoma665, how do I go about cleaning that?

 

Just search on google for "how to clean an IAC valve for Toyota Tacoma"

 

I would definitely give cleaning your IAC and TB a go before changing a injector. As for injector diagnosis, the only difinitive method is to pull the injectors and measure their resistance with a meter set to Ohms. I don't recall the OE spec but I believe it is about 12Ω injectors 1-5 were about 13-14Ω and injector 6 was 38Ω needless to say Cyl 6 was my problem cyl. Along with the symptoms you described I also had a misfire on cyl 6 when starting warm before I finally pulled and tested my injectors.

Start with the cheap easy fixes before shelling out for an injector though.

 

Alright, I'm going to start with the IAC valve, then I'll go from there. Thanks for the help everyone

 

Thats a bad purge valve. Its stays open and all the fuel tank vapor fills the motor causing a rich flooded like condition. To verify disconnect the the purge line to the motor and then fill up and all will be normal once again.

 

Okay, Ill do that as well! Thanks!

 

Actually, I looked up how to do that and I didn't really find anything good on it. How do I go about disconnecting it, and where is it?