Adjusting Idle RPM?

SubaRyu · #1 06-12-2007, 12:08 AM

Does anyone know how to adjust idling RPM? Mine seems bit low and I'd like to increase up to 600 or 700rpm. Is it easy or gotta get some new parts??

Thanks.

svxistentialist · #2 06-12-2007, 02:58 AM

Ryu

When you say it's low, I must presume less than 600 rpm.

If it is not causing the car to cut out, why would you want to up it? Or is the car cutting out?

Joe

SubaRyu · #3 06-12-2007, 01:52 PM

Quote:

Originally Posted by svxistentialist

Ryu

When you say it's low, I must presume less than 600 rpm.

If it is not causing the car to cut out, why would you want to up it? Or is the car cutting out?

Joe

Yup, it's about 500 or less RPM. When approach to stop sign it "almost" cut out. Never cut out yet, but not surprising if it did.

SubaRyu · #4 06-12-2007, 01:56 PM

Quote:

Originally Posted by svxistentialist

Ryu

When you say it's low, I must presume less than 600 rpm.

If it is not causing the car to cut out, why would you want to up it? Or is the car cutting out?

Joe

One more thing.. when A/C is on, RPM is slightly higher, so no problem...but I'd prefer fresh summer breathe from window you know...

Manarius · #5 06-12-2007, 02:52 PM

The RPM is supposed to be higher to account for the A/C being on. That's normal. On the EJ22 (the engine in the Legacy), there's an idle adjustment screw located right where the throttle body meets the intake. I'm pretty sure there is one in the SVX located in a similar place. tightening the screw should raise the RPM slightly. You might also want to consider cleaning the Idle Air Control Valve.

SubaRyu · #6 06-13-2007, 01:00 AM

Quote:

Originally Posted by Manarius

The RPM is supposed to be higher to account for the A/C being on. That's normal. On the EJ22 (the engine in the Legacy), there's an idle adjustment screw located right where the throttle body meets the intake. I'm pretty sure there is one in the SVX located in a similar place. tightening the screw should raise the RPM slightly. You might also want to consider cleaning the Idle Air Control Valve.

Thanks I'll look into that. If I can't find it, might ask you for some visual help

immortal_suby · #7 06-13-2007, 08:00 PM

it would be new to me. As far as I know (and what is stated on the underhood label) the EG33 idle is not adjustable. It does go up with the AC on, but AFAIK you can't adjust it. You could adjust your throttle cable linkage to raise it up.

I'll check the service manual to see if I can find something that says otherwise. LAN could most likely tell us if it is something in the ECU or in the IAC that sets where it will be.