How to Adjust Idle Speed

[2K4 STI]

My 87 RX with the Ea82T when warm idles at around 1200 rpms.How can this be adjusted?

Can the linkage be adjusted or does the TPS control that?

 

 

TIA

[GlTurbo1987]

there is a little screw by the throttle body that adjusts the idle speed... i had to partially remove the top manifold to get to it, but it isnt a big job

[2K4 STI]

This is one of those things that a pic would be worth a thousand words

Where would this screw be located on the manifold?

[j2coe]

should be on the back of the intake manifold. behind where the crossover comes from the turbo, in a recess.

[Skip]

the screw sits in a vertical position

only the slot is visible in the recess

 

look behind where the turbo plenum

(says "Subaru Turbo" on it)

enters the intake

 

under the plastic tube for the PCV lines

[2K4 STI]

Cool thanks guys,ill be trying to adjust it tonight after work

[TheSubaruJunkie]

Yeah a pic would be 1000 words in this case. The screw your looking for doesnt really look like a screw at all. Its not apart of the throttle body linkages like a normal idle adjust screw would be.

 

If you look down at the intake manifold, what your looking for is a flat tip head that is threaded into the intake manifold itself (been so long, i cant remember exactly where). Anyhow, with the car running if you give it a 1/4 turn counterclockwise the engines idle speed should react immediatly.

 

-Brian