Hello. I have a 2002 toyota sienna that keeps getting stuck at wide open throttle after accelerating while driving. I have no codes. It's definitely not the floor mat. I lubed the cable by the pedal with wd40 silicone and the part that is exposed by the throttle body. The pedal and throttle cables don't look like something is obstructing them. All free motion forward and returning and accelerates normally as usual. Haven't checked the throttle body yet because i was thinking if everything is returning normally when off/on and when i apply throttle by hand, the plate is not getting stuck open. I'm at a lost and getting ready to take it in to Pep boys before i total it and/or hurt myself and others. Id rather potentially get ripped off or futher vehicle damage than that happen.
Help!!
Clean the throttle body. It will likely solve the issue.
Could the plate stay open without the pedal/cable being applied? I thought it opened and closed with the pedal/cable. Last time it kept accelerating i pulled up the pedal with my foot and it kept going. 🤯
It may stuck open or semi-open when carbon builds up. It is a good practice to clean it once a while and also clean the MAF sensor. Scotty has a video on that. Follow that.
I got it stuck last time and tried to put it in park/neutral to lift up the hood to see what the throttle cables looked like while it was doing it to verify if i could see if the plate was open from the outside but soon as i put it in park it stopped. 😕 Unfortunately I have no place to work on it so i was at least hoping to pin point the issue before i took it in. The cable doesn't go in the tube up top but it still accelerates when i do it by hand but it goes in when someone does it by foot. I was thinking maybe a kinked cable but wouldn't that prevent it from accelerating? The bottom kick down cable has a little slack in it but I'm not sure that correlates either. 🤷🏻♂️
If you watch Scotty’s video, you realize you do not need that much space to work on your car. Anyway, if you cannot do it, ask a mechanic to check and do it for you. They probably won’t charge you a lot since it is a simple job.
After all I've described you're thinking it's just a dirty throttle body and not the cable?
Maybe it is a cable too but if you have not cleaned the throttle body, you need to do it as well.