cant get car to idle lower, having hard time distinguishing timing mode

[I ask good questions]

I changed my cams today, couldnt get the car to idle at ~750-850. My idle on stock cams, my hks 264's and now my jwt s3's has always been ~950-1000. Can anyone give me any suggestions?

[I ask good questions]

Bump for an answer or advice please.

[abubika345]

try adjusting the stopper screw for the throttle on the throttle body

[I ask good questions]

Ok, thats a start thank you very much!

[I ask good questions]

Ok, adjusted that per the FSM, it read .7 kilo ohms. However, when I started the car back up it idled at ~2500 rpms. Anymore help would be great. I am about to check to see if the sensor was installed right.

[shift_SRDETuser]

after market cams with a duration of 10.5 or higher will idle right where you are talking they will not idle at the normal idle spec of around 800 more like 1100 or 1200.... I should know since I run greddy easycams......

[I ask good questions]

However like i said before idle on the stock cams was high. Also they idle almost as smooth as stock, not all lopey and nice sounding like they should

[I ask good questions]

also when i unplug the tps it will idle ~750-800 which is where it should.

[I ask good questions]

bump

[abubika345]

I would like you to try this:

keep the Idle control valve connected.

with the car running adjust the stopper screw on the throttle body to get the idle you want.

Then adjust TPS to close to, but less than .5v... so around .49

Let me know what happens.

[I ask good questions]

The screw on the IACV is all the way in...

[abubika345]

not the screw on the IACV! the screw that is the stopper for your throttle.

[I ask good questions]

ok.. i guess the next bombshell on your parade is that the stopper screw is all the way out. not touching the throttle pulley!

[Sil80315]

My idle reads 1000-1100 on the cluster and 950 on my RSM. I have HKS step 2 264 cams.

the idle doesnt bother me being that high and the cams sound sick at idle...not a good thing if your trying to hide your mods

Unscrewing the stopper screw on the TB wont really do much seeing that its the IACV that takes in the air and idles your motor till the throttle flap opens

[the converted]

Has the IACV been cleaned and are the coolant lines hooked up? Without the coolant hooked up the idle will never drop.

[I ask good questions]

Yeah, the IACV is cleaned and the coolant lines are hooked up. cold idle is ~1300 and drops down to ~950. I need to get my multi meter back out and check the tps voltages. I think the tps has been messed with. My motorset came with a t28 and a toda flywheel. Could have been many other things too in the past. I've put near 60k miles on it!

[Sil80315]

if it idles at 950 then why does it matter if its not idling at 750-850?

[the converted]

Then I would check the TPS like you said as well as making sure the throttle plate closes completely. Then the throttle stop screw should be adjusted so it idles with the iacv unplugged.

[I ask good questions]

if it idles at 950 then why does it matter if its not idling at 750-850?

I would just like for the car to idle stock. Not to mention if the tps isnt set right it could mess with the ecu as well.

[abubika345]

well i guess you cant do much with the throttle screw then.....would say timing and tps as said before then go from there.

sil80315:Yes the IACV does control the idle, but if that stopper screw is too far in, its going to hold the throttle open a hair and cause the idle to climb since it is bypassing the IACV.