when i first start my car, regardless of temp outside, ill jump up to about 3000 rpm then i tap the gas and it runs down to about 2000-2500 idle. if i contiunte to punch gas up, it will go down to about 1500 at idle. but, after i drive for a bit, it will go back to the ~750 that i should be at. i do have a cone filter and a RB header installed with pre-silencer, but no cat-back. i dont think these are it, because it was like that before, but it seems to be a tad worse. thanks.

 

Its supposed to do that

 

start the car in gear and it won't go to 3000rpm

 

Its a built-in feature to warm up the cats so you dont blow em out. Its not too good on the engine since its revving high on its first start. (especially on a cold morning)

 

Thats the AWS or Accelerated Warmup SYstem.

Normal operations.

 

It's an emissions control. Normal.

 

That smilie makes me think that you don't like it.

You can disable it. If you look on the engine side of the radiator, on the driver's side at the bottom, you'll see what looks like a huge copper/brass bolt with two leads coming off of it. Unplug one of the leads.

Congrats. You've disabled the AWS. Don't worry, the sensor doesn't interact with anything else so its being unplugged won't cause new problems.

 

ok, i feel stupid now. thanks it is just that sometimes it does it and some times it doesnt.

 

so .. if this isnt harmful to remove...what is better to have: connected or disconnected.... if its connected it puts less stress on the cats...but if disconnected it put less streess on hte engine...i like my engine more i guess

what would you guys do

 

not true. you emmission stuff and ACV will not work correctly

you are better off to just start it in gear (instead of N). and it won't happen.

 

Wtf does the ACV & emissions have to do with that sensor?