RedSC

iTrader: (3)

ok so my car is idleing too high, i changed the TPS, Idle control sensor and adjusted the idle bolt to its lowest possible position and its still idles too high at park or in drive. when i pinch the hose from the idle control sensor and the throttle body it drops the idle tremendesly, does anyone know whats up?

kene

iTrader: (2)

Some will not like or agree with this idea, but it is the old fashioned way to determine if and where you have a vacuum leak.
Get a can of brake cleaner, or carburetor cleaner, and use the red straw spray extender that is taped to the side of the can.

While the motor is running, strategically spray(in half seconds "spritz") the cleaner around rubber hose areas, gasket areas(intake manifold, sensors, etc), and any other area that experiences vacuum.

The way you can tell if you have hit the vacuum leak is if the motor will start to drop in rpms(to the point of almost shut-off), and sometimes will "bog down"/ turn off if it is a big vacuum leak.



What is happens is that when carb cleaner is sprayed into the unknown vacuum leak area, it gets sucked in causing an extremely rich Air to Fuel ratio. thus causing your rpms to drop to the point of almost shutdown or the motor just shuts off. This can help you find out where the vacuum leak is.


Hope this helps, and post your findings/results for the next member in who has the same problem.