Where is the Idle adjustment screw ?

fir3 · Post by **fir3** » November 27th, 2005, 8:56 pm

Where is the Idle Adjustment screw ?
Can someone post pics, please ?

jaydog5678 · Post by **jaydog5678** » November 27th, 2005, 11:36 pm

What yr is your car?

fir3 · Post by **fir3** » November 28th, 2005, 11:15 am

Mazda mx3 1.6 16v 4cyl DOHC '97 !!

D323 · Post by **D323** » November 28th, 2005, 3:44 pm

on most B series FWD mazda motors its on the TB itself... it angles upward and slightly forward (toward the front of the car).

jaydog5678 · Post by **jaydog5678** » November 28th, 2005, 3:59 pm

It is on all TB on the 4cyl's.

Before you check the idle speed make sure that all accessories are off (ie, radio, heater, a/c, lights). With the engine warm and the cooling fan OFF, you can make your adjustment btwn 750-850 RPM with a flat head screw driver. Your ignition timing should be set at 9-11 BTDC first before you adjust.

The adjustment screw will be obvious on the TB.

fir3 · Post by **fir3** » November 28th, 2005, 4:52 pm

Will I have to readjust the idle when I change my TPS ?

fir3 · Post by **fir3** » November 28th, 2005, 7:58 pm

Will I have to readjust the idle when I change my TPS ?

jaydog5678 · Post by **jaydog5678** » November 29th, 2005, 12:36 am

It would be a good idea.