2004 Toyota Sienna fuel system problems

Filed Jan 9, 2025 · Acceleration, Fuel system · CA

Was driving on highway at 60-65 mph. The car continued to accelerate. Pressed on brake and wasn't slowing the vehicle. The driver was weaving in and out of cars as the van started to creek up to 92 mph. The driver and passengers thought they were going to crash and possible die. The driver tried the brake multiple times and nothing. The driver said the accelerator pedal wasn't pressed all the way down to the floor. It was half way and driver had to go down and pull up on the pedal while driving. The van then started to slow and driver was able to pull over to have the van evaluated . The throttle body was reached and cleaned of carbon because it said that this may have been part of the issue. Never has this van taken off like this. The throttle body cable wasnt loose or disconnected either. So far we havent been able to recreate but 3 people could have been killed.

Filed Jul 11, 2021 · Engine, Fuel system · CA

Unknown

Filed May 25, 2021 · Fuel system, Seat belts · CA

Drivers side seat belt broke and was replaced. Fuel sensor not replaced causes vehicle to hesitate at times at freeway speed

Filed Jul 1, 2014 · Fuel system · 89,500 miles · OR

While exiting a parking lot, car stalled. Immediately, there was a smell of gas and gas was leaking on the ground. Car would not restart. When we got it repaired, the mechanic said he discovered the "fuel line quick connect" disconnected. He asked if we had any recent work done on the car and I replied no.

Filed Dec 31, 2013 · Acceleration, Fuel system · 146,455 miles · MD

I attempted to merge onto the expressway and after pushing the gas pedal the van suddenly accelerated beyond my control. I eased off the pedal and the van continued to serge ahead with no way for me to stop or slow it down as the brakes would not work. I saw the RPM reach level 6 and speed increase to 70 in seconds but as it was the expressway, I was able to keep my distance from cars in front of me. I switched the lever to the neutral position and the van slowed down and then I went back to drive and it roared back up to 70 MPH with the RPM again at 6 and I tried turning the cruise control on and then braking to see if it would shut down the gas but no luck. I went back and forth from d to n for about 2 minutes and then on one of the movements from n to d it shut down back to normal. I dropped the van off at my toyota dealer the next day and am waiting to see what "headquarters " decides.

Filed May 20, 2010 · Body, Fuel system · 72,000 miles · NE

On my 2004 toyota sienna minivan the rear hatchback gas struts have failed. This is a dangerous situation that could easily get a small child killed. I almost had this happen when my 5 year old was helping to get groceries out while I was holding the gate open it slipped and came crashing down. Luckily he had just moved and it missed him. These gas struts are a recall item on the power operated lift gates, why aren't they on the manual ones. And the cost of replacements is terrible, $180/ea. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed May 18, 2010 · Fuel system · 100,000 miles · TX

Gas leaking.

Filed Feb 3, 2010 · Fuel system, Transmission · 10,000 miles · OH

I wrote to toyota sept. 7, 2007, concerning an acceleration problem with my 2004 sienna minivan, following many visits to the dealer to evaluate and fix it. The throttle response is delayed, in my case; it lags during initial acceleration from a stop, but more importantly, it lags when immediate acceleration is needed for passing, and accelerating after slowing for a turn. The factory rep who responded to my letter said the dealer would reevaluate the problem. The dealer rep drove the van, experienced the same problem, and concluded it was a "quirk" of the car, that could not be fixed unless, perhaps, the computer controlling the throttle was replaced. They would not do that unless a recall was ordered, he said. Needless to say, I thought that was the final word, until other problems began to surface with the "fly by wire" system in toyotas. I do believe that the electronic throttle, the throttle position feedback circuit, and related sensors are at fault, all of which are controlled by the computer. I also have other cars with electronic throttles, an accord and a town & country, and neither has that problem. No accidents have been caused by this daily malfunction, as I guess I have adapted my driving style to it, but don't you think there is a systemic problem here? The incident date is a continuing date, beginning during the first year of ownership (2004) up to the present time.

Filed Jan 28, 2010 · Fuel system · 1,000 miles · FL

I own a 2004 toyota sienna. I have had issues with a sluggish accelerator that suddenly "gives". I have taken it to the dealer and independent mechanics and neither have resolved the issue. I have documentation of repairs, cleaning the fuel injectors, removing the carpets, etc. Nothing has worked and am worried why the sienna has not been included in the recall.

Filed Jan 8, 2010 · Fuel system, Locks · TX

I purchased a 2004 toyota sienna le in 2003. The date that I was to pick up the brand new van I was informed of a recall. When I pick up the van I was told that the recall concerning the gas tank was made. Now, the gas tank is linking, what should I do now.