bee

With ac on car idles at anywhere from 500 to 600. Is there a way to adjust this. Maybe the TPS??

ivanuscg

I've had the same problem, I had the throttle adjusted, but in turn the idle was raised slightly. I'm not sure what its caused by or if its a common occurence. With past experiences with cars, the idle will drop slightly with the A/C on

Street King

The idle shouldnt drop. It should jump up to 1100 rpms for a while then cycle back between 1100-700 rpm ever now and then.

SanJoRX7

You should be able to set your idle manually, however I don't know that you'd want to. Unless your car is going to die with the AC on, which it shouldn't, your idle should be between 500 and 900, just like normal. The idle will be affected when the compressor kicks on, but your car shouldn't ever die.

bee

it dosent die..

Every time I come to an intersection my idle momentarly drops then returns to normal in about 10 Seconds.

TobiasRX

My car has died when i have the a/c on. It's happened when im going to shift and the rpm gets down. It goes down too low and the car died.

JONSKI

It sounds like your Idle Speed Control (ISC) is not working correctly. The ISC allows more air to bleed through if there is an electrical load or or the Air Conditioner (A/C) is engaged. I believe what is happening is that the A/C is creating a power load on your engine and the ISC is not compensating for it. Make sure your ISC is plugged in correctly. It's on the firewall side of the Upper Intake Manifold (UIM) closest to the throttle body. It has a single two-pronged plug that may not be connected properly. If you are unfamiliar with what's under the hood, then I can take a picture of it in my car and point you towards a diagram.

[edit]
The easiest way to control idle is by turning the "idle bleed screw". There is a flathead screw underneath the throttle body closest to the firewall that when turned CLOCKWISE will lower your idle and when turned COUNTER-CLOCKWISE will raise your idle.
[/edit]

-Jon

Street King

You could help me out a great deal if you could point out both the idle screw and the plug with a picture.

Jonas

JONSKI

idle bleed screw



If you need to know where the ISC is right now, then I will go and take a picture for you right now, otherwise I would rather wait until tomorrow. It's in the service manual in section 'F', which is the "Fuel and Emissions Control Systems" section. It's listed in the index.

Street King

You DA MAN JONSKI!! Thanx

JONSKI

Here is a pic if the rear-driver's-side UIM, but it's removed from my car. I've labeled accordingly. If you still want the in-car pic, let me know.

daem0n

Check your clutch switch, it's probably broken - or stuck in. This is what happened to me. For $20 you can get it replaced...

https://www.rx7club.com/forum/showth...threadid=91723

Try it if the ISC doesn't work.