Last week I put the hks f con I am running 1 bar plus exhaust and intake and a bigger turbo 6.0 my car was super fine for 3 days. running excellent and everything but all suddenly one night 4 of july the rpms went crazy all the way to 9,000 and every time that i try to turn it on it does the same thing... i change the ecu I tried 3 different ecus but it's the same ... i took out the Acceleration cable and nothing.. I really don't know what's going on help plizzzzz

 

Check and see if your butterflies are wide open on the throttle body. Even though you took off the cable, the butterflies them selfs can be stuck on the open position.

 

Super LARGE vacuum leak? or something pushing down on the throttle cable?

 

did you check the cruise control cable?

 

My guess is the throttle cable or TB is sticky. That's the only thing on a car that can raise RPM.

 

except for vacuum leak and other things

 

I think its just a throttle cable thats stuck on something...

 

Like 2-n-d-pink said, take the intercooler off and look at the throttle butterflies to verfiy that they are closed.

I had the brake booster line off (large vacuum leak) and the car only revved to 3900 rpm.

Maybe your damper or thermal wax is sticking.

 

how the hell would a vacuum leak cause the engine to automatically go to 9000?? if there was a leak that big the engine would not even try to start. in my experiences vacuum leaks only cause the car to be unstable at low RPM, meaning the owner would have to up the idle to make it stable.

It has to be the throttle body. if your car was otherwise healthy idling at say 800RPM... and you gave it the amount of gasoline required to rev to 9000RPM... it would stall so fast your head would spin.

This being said... I have never worked on forced induction motors before, so it may be a turbo issue.

 

kaboom


-Ted

 

try starting your car with the upper intake mani off it will rev up real quick hahahahaha.

Sounds like the throttle body is stuck open to me.

 

thanks guys I'll check it out tomorrow but if my problem is that why the throttle body will be open ? what will be the cause?

 

the cause could be lots of things. When you inspect them just grab where the throttle cable or TPS conncect to the throttle butterfly's and see if you can move them or if they stick or are totally stuck. They could be poorly lubricated, there coule be something blocking them from closing both inside or outside the throttle body.
Good luck

 

You would be amazed. I once said the very same thing to one guy that had the same problem. Happend after he took his intake manifold off. He had a vacuum leak between the UIM and the LIM. Go Figure...

The TB is designed to work dry. As in no lubricant. You can try spraying WD40 on it if its frozen but you should just tear it apart and clean up any corrosion present.

 

well I did check it but it wasn't that still doing the same -_- 2 weeks ago i changed the injector i used to have 800cc but i put the stock 550cc with the f con hks the car was running really good but it last like 3 days.. 0_o could be any sensor? or wire or ecu or anything like it?.. ........I really don't want to take it to the shop ...they always rip my pockets....-_-

 

I just saw this thread and only have one question....

is...it...over...9000!?!?!?!?!?!?!!?

 

mm yes i think so why ? does it matters? well actually i really don't wanna know where my rpms could go to.....

 

yet again another helpful post written by RETED.
like the other people already posted, i would check the throttle body cable and the butterflys.
my 7 did the same thing and it was the throttle cable, it got wrapped around the out side of the linkage. its kinda hard to see but its on the back of the intake.

 

Hi guys well i took my intake manifold off and i found that there was 3 big lines off i was happy coz i though that was the problem i reconnected i put everything back to normal but the problem still the same -_-