for some reason my throttle is stuck open. my throttle cable is fine. everytime i start the car, for some reason it is being floored. can anyone help me with this???

 

did you do a mpfi swap or do you have an si?

 

are you sure you checked all the throttle cable...vaccum lines all hooked up? is there play in the gas pedal

 

its a 91 si with a jdm gsr swap

 

all vaccum is hooked up.. and the throttle cable has tension on it. the throttle cable is loose

 

i just replaced my clutch cable today. i drove it on the freeway and it was fine. i came back and let it sit for a little bit. i started it back up and now i have a full throttle

 

anyone at all ever experience this? if so how did you fix it?

 

shift faster and make better time now? Be sure you dont have any **** around the throttle body. I helped fix my friends civic that was wide flippin open all of a sudden after gettin back from a drive. seems liek same scenario. HE claimed he never floored it when it was off, but must have, because we took off his intake "arm" thing and we could see the throttle plate thingy wide open. unbolted it, took off all the ****, cleaned it really good with carb cleaner, and now it springs right back. It had all the oily soot **** from the valve cover breather all over the pivots. Might wanna check this out. hope i helped.

 

so take apart my throttle body? the flap in the throttle body is fine.. it springs back and forth..

 

could it have anything to do with the tps??

 

You have a vtec buildup. Take it out and go full throttle up and down your street and burn some of it off.

J/P

Check your gaskets on the throttle body and intake manifold. Sounds like you have an air leak somewhere.

 

just double checked the vaccum hoses and the gaskets are fine... anything else?

 

this happend to my ls motor after i changed to oil the motor would idle at 4000 rpm, i messed around with the idle screw and loosened up the throttle cable a bit.

 

thanks for the help everyone but it is still stuck at full throttle.. does anyone else have any other suggestions?? could it be the throttle position sensor?

 

the throttle cable is not tight or lose at all.. its perfect. its adjusted perfectly.. its been fine until today...

 

my motor was running fine too before this happend. when you shut off the car is the throttle body fully closed or is it stuck open as if it was idleing @ full throttle? another thing i did was clean the throttle body with carb cleaner.

 

when i shut the car off.. the throttle is closed...

 

well im out of gueses now. just sayin what fixed my friends situation. Good luck and all hope ya get it figured out

 

yea thats how my car was too, checked the vaccum lines, cleaned the throttle body messed with the idle screw and got it to drop a bit but it was still idleing at 2500rpm and the last thing i did was adjust the throttle cable and it was fixed. just loosen up the throttle cable a bit your not gunna hurt anything and if it doesnt work just tighted it up again.

 

did you check the idle screw yet...just go all the way in and start the car if it doesnt start open a little...then keep doing it till it starts...you know if its all the way closed and it starts its leaking somewhere

 

check the iacv as it may have stuck open. also check the booster check valve, i have seen them crack in the middle, but that resulted in a minor vacuum leak.

 

either your intake manifold gasket or throttle body gasket is leaking,,or you have a huge vacuum leak..I dont know what else

 

im pretty sure you got all 53 post just from this one thread also............

but


check your idle screw, check intake manifold and TB gaskets. Double check your vac lines.

 

you sure you dont have a rock stuck on the throttle body? take of the intake and check man or it could be the tps if its not adjusted correctly check it green is grond red is constant five bolts orange is from .01 to 5 bolts depending on throttle position adjust it to .45 bolts on the orage wire..

 

i just had this problem at it was my TPS, is your "check engine light" comming on?