Ika, has it started back? If not, it may be a timing belt/chain broke. If it cranks, it may be a fuel pump, filter, pinched gas lines, or bad fuel injectors. It may be a problem in the ignitions. Spark plugs,coils, wires, distributor, coil pack, dist.cap, If it is not cranking, check ignition fuse. Check battery, wires, and whole charging system. If it is just dying on you and it starts back, it may be a map sensor, idle sensor or throttle sensor possibly. Need a little more info please.
Does it only happen once the engine is warm? Or when it is still cold? Have seen bad coolant temperature sensors on this model, also faulty TPS, and quite commonly knock sensor. Is the check engine light illuminating?
ENGINE HESITATES WHILE ACCELERATION
LOSS OF ACCELERATION
It
can be fuel pressure issue or it's the problem with accelerator pedal or its
clogged filters causing there.
There
are many other possibilities. I suggest you to go through the list of help
links mentioned below, these will help you to confirm where the actual fault
lies: -------
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http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html
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http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html
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http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html
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http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html
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http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html
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http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html
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http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html
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http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html
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http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html
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http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
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These details will help.
Thanks.
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tnk u for your immediate response it has started back and brought it to d dealership who recently changed d rusty gas line. spent $100 to have it diagnosed coz it won't accelerate while idling at a traffic light. they r unable to diagnose any problem. now they want another $200 just to chk d fuel pump n if that's negative another $$ to chk d injectors omg is this an expensive fix, worth it? sos!! now it's running ok again but sometimes it suddenly stops while waiting/idling at a stop light. thank u much!
Hi Ika, I am having the same problem... have you figure it out what cause happened yet ?
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