[yeahi]

Hey quick question, what will cause the car to rev by itself when it is in neutral? was out driving home in the rain and everything was fine and dandy till i pulled into my parking spot and i put the car into park and it started to rev by itself, what can the cause of that be?

 

[Unplugged]

did you maybe step on the gas pedal by accident.. ?

 

[yeahi]

lol...nah i started the car again and the correction isnt at the 33% it should be, its at like 25%.

 

[alphaSSmale]

I had this problem and my IAC valve went out.

 

[yeahi]

Iac?

 

[twinmodersx]

idle air conttroller when your car is at idle the plate for the throttle bodie is closed and air cant get throught so it will rev up so it wont die

 

[BrunotypeS]

I have some thing like this happening to me, it happend mostly at the track. After my first run my idle will just sit at 1500-1700 but after the drive home it will be back to normal. It has also happened a couple time while out driveing on the street but mostly at the drag stip.

Is this what's happening to you yeahi?

Any ideas? my Iac possibly?

 

[yeahi]

i was driving fine and dandy all the time just minding my own business, then when i pulled into my complex i put the car in park and noticed that my car was revving, i dont know if it is from all the rain becuase i was driving through a lot of rain 2day for about an hour maybe.

 

[alphaSSmale]

Mine started happening when I raced some guy. I have narrowed it down to the Idle Air Control Valve. But before you run off and replace that I would check for and Air Leaks.

 

[yeahi]

i dno i just went back out to check and i start the car, the correction is at lke 29% instead of 33%. Its idling at like 1400 then all of a sudden it rises to about 2k and drops back down to 1500 and it continues to do that in that cycle, up to 2k down to 1400, up and down.

 

[bozrahrsx]

maybe somthing to do with rain...same thing with mine today

 

[yeahi]

hmm really?? did it go away or anything? the damn rain man sooo much outta no where, im thinking rain got somewhere or something. Whats the status with yours? and will the revving cause anything bad to the car?

 

[bozrahrsx]

i dunno this is new.....i don't see how reving could be bad for motor but who knows..........we should probably talk to boostjunkie

 

[yeahi]

yea maybe they know, im hoping its just the weather, seems that we have similar problems, if you fiund out lemme know, if i find out i'll let u know also so we can get this fixed.

 

[yeahi]

hmmm same shit today revs from 1k-2k and does it repeatedly when in neutral and in park but in drive it idles a lil high like around 1500.

 

[TeK]

this happened to me with my old prelude.... it started reving up and down repeatedly when it was in nuetral.... it ended up being the radiator had a leak and yea end of m ycar....

 

[alphaSSmale]

Why would a radiator leak cause the end of your car?

Anyway, here is a simple test to see if you have an airleak or a bad IACV. Disconnect the intake from the Throttle Body. Start the car and let it warm up to normal operating temp. Now with the car still running, use two fingers to cover the hole thats is right in front of the Throttle Body "Gate". This is the airway to the IACV. If you have a bad IAC valve like I did you should see (and hear) the RPM's drop dramatically and almost stall the car. If the RPM's do not drop or only drop slightly you have an air leak.

Note: This is the "Official" Acura test and will not harm your vehical. I got this procedure directly out of the RSX Service manual. Good luck.

 

[yeahi]

from what u say i think its an air leak because it doesnt drop past 1k at all.

 

[i VieTEC]

What does your boost/vacu gauge read? You've been getting lots of minor problems huh. Automatic tranny revving on its own?

 

[alphaSSmale]

from what u say i think its an air leak because it doesnt drop past 1k at all.

You did that test already?! Wow your quick. Anyway it does seam like a vacuum leak. I can stall my car when I do that test. Go buy some Ether and spray it around your gaskets. Especially around the intake manafold. When you hear your RPM's shoot up you have found the leak.