That really sounds like vapor lock to me, but its not very common in modern vehicles.

http://en.wikipedia.org/wiki/Vapor_lock


But, are you using the same key all the time? Try your other key, see what happens. Also, does the idle get rough before it dies, or does it just die.

 

Well it idles real low and if I give it gas it doesn't change, then it jus turns off.

 

Well it idles real low n rough for a few seconds then turns off. While it idles low n rough, I try n give it gas n the rpms stay the same and no throttle response

 

I'm gonna take a guess but it can be a dirty throttle body or maf sensor.

 

...Maybe u guys can help or have had the similar prob....

Has it set the SES lamp? with symptoms like that it really should be throwing a code. Even if it hasn't set the SES lamp, it could have a code stored so take it to an autozone and have it read. But do NOT reset the system!

Major components of the emissions system are covered by an 80000 mile warranty. Your truck has to fail an emissions test first, so take it in and see if it will pass and then they have to find the defect and repair it under the warranty.

 

Read thru this thread. While it may not be your problem, it's certainly a possibility.
http://www.tacomaworld.com/forum/2nd-gen-tacomas/141890-2009-tacoma-mystery-problem-dies-flight.html

 

Well it threw a code of saying the pass cat was plugged. Could that b causing it u think? N I wish it was covered, i jus hit 90k

 

Yup... too bad it's over the emissions thresh hold. Texas has emissions inspection so welding in a pipe or gutting the cat is not an option. You'll almost certainly have to find one.

First choice is checking salvage yards for low-miles cat; next is weld in a universal cat but they don't last as long. Last choic is get an OEM which is probably major expensive.

Whatever you do, next thing is put intake back to stock and/or find out what else caused your cat to plug: maybe burning crappy Pemex gas? Frequent use of snake oil fuel additives? Dunno what it was, but something plugged that cat.

EDIT: Actually, I have read of another option but I'm not sure exactly how it's done: I understand you can sometimes burn out a blockage! It entails putting a heavy load on the engine, operating at or close to full throttle for several hours. The idea is to heat the cat up so much it burns off the blockage. IME, it would have to be done in a shop with a dynamometer so you can operate it with a load at equivalent speeds up to like 110 MPH for extended duration. Safely. But wow... that's a ton of wear on the motor! I don't know if anyone's ever done it, I've just read about it. Maybe a long highway drive...say to El Paso and back... driving in a gear with engine close to redline to keep speed below the limit (80 mph out there on I-10) would do it. Dunno. But it will sure burn up a bunch of gas.

 

B U N - is that a code?

Too bad you're passed the emissions warranty (8 years/80k miles).

 

Thanks for the feedback everyone! I think i may have figured this stupid thing out. As i was driving my son to day care the check engine light came on and i hauled azz to my buddys shop and put the computer on it. It came up with P0340(bank1) & P0121(TPS). Im gonna haul butt to auto zone and get the parts but my question is which side is BANK 1???? I noticed we have 2 camshaft sensors and there 110 a piece and i sure as heck can afford both those pieces right now...

 

Bank 1 is passenger side on these backward trucks.

 

The FSM says an easy test of the CP sensor is to check resistance across it, should be 835-1400 ohms cold or 1060 to 1645 at operating temp. If the resistance is good, the sensor is fine, it might be the harness, ECM or even could be installed poorly.

Also, the P0121 code seems to get thrown randomly with other codes, the FSM says to fix the other codes first and see if P0121 comes back.

 

Well the camshaft sensor could certainly be responsible for bad idle. I don't know about lack of throttle response though....

The TPS sensor is very suspect in this case due to the symptoms. Specifically, these vehicles are DRIVE BY WIRE. P0121 is throttle PEDAL position sensor. In other words, it doesn't know how hard you're stomping on the go-fast pedal, which works in perfectly with the "no throttle response" symptom.

I have a feeling that it is either responding poorly to the camshaft sensor and going into "ignore TPS" mode (responsible for lack of throttle response), or BOTH of the sensors are shot.