Six problems related to engine have been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
While attempting to accelerate by pressing the gas pedal to approximately 3/4 of it's travel, I experienced no throttle response for 1-2 seconds with cars coming towards me. The engine then proceeded to rev to the proper level I was expecting. This type of situation also happens while attempting to pass a car on the freeway by pressing the gas pedal quickly. The car once again hesitates and then responds in 1 -2 seconds. The vehicle is a Toyota Sienna 2004 xle fwd. I've tried to use different fuel grades, ac on/off, tires properly inflated, no one in car/car full, day and night, all with the same result.
The automatic sliding door on my 2004 Sienna has been a problem since we purchased the vehicle. At times, we can't open the door from the outside and other times, we can. Also, we recently closed the door with the automatic button and for no apparent reason, the cable broke so that we now have to open and close the door manually. Also, we have had issues with the acceleration of the vehicle if we are going from a stop position or a slow moving (less than 10 km/h) position. The van seems to slow down before shifting into gear. This is a serious problem when driving especially with children in the vehicle. My warranty has expired and I'm looking at having to pay for this on my own. I am dissatisfied with Toyota, I have had this vehicle for only 2 years and I have had three recalls already. This is my 2nd Toyota product and my last.
Minivan does not alway accelerate properly. When the vehicle is slowing down, like when coming to a red light, the vehicle will hesitate when I try to accelerate if I have not already come to a complete stop. This seequence will usually reproduce the failure: 1. Travel around 40mph. 2. Quickly slow to around 10mph. 3. Try to quickly accelerate to 40mph again. The vehicle will hesitate and pause before starting to accelerate.
While driving at low speeds the vehicle went into neutral then hesitated when attempting to accelerate.
Hesitation bogs on a acceleration, delay in a acceleration no power for a few seconds. Looses speed and cars behind catch up very quickly and worried about getting hit in rear end. My wife is worried about getting in an accident. Toyota dealer felt the problem, but no offer for repairs they say this is normal operation. This is a safety issue. We have had it in twice with no result. (2004 Toyota Sienna).
The contact owns a 2004 Toyota Sienna. When turning a corner at approximately 5-10 mph the vehicle would hesitate and lose power. The dealer stated that the vehicle needed a computer update, however; the system was unavailable. The dealer stated that the failure was not normal. The current mileage was 100,000. The failure mileage was unavailable.