Tas Location/Adjustment; Vehicle Affected - Mazda 1983 RX7 Service Manual

TAS (THROTTLE ADJUSTMENT SCREW) LOCATION/ADJUSTMENT CAT. F, NO. 014/98
ARTICLE BEGINNING
TECHNICAL SERVICE BULLETIN
TAS (THROTTLE ADJUSTMENT SCREW) ADJUSTMENT
Model(s): All Mazda Models with Fuel Injection
Category: F (01) - Fuel & Emission Control
Bulletin No.: 014/98
Date: December 9, 1998
VEHICLES AFFECTED
All fuel injected models.
DESCRIPTION
Fuel injected vehicles with idle speed control motors should NOT
have the TAS (Throttle Adjustment Screw) adjusted for any reason. The
TAS functions as a stopper when the throttle valve is fully closed.
During production, the TAS is accurately set by measuring the airflow
rate past a closed throttle plate. Any adjustment to this screw will
affect PCM control of idle speed.
Customers complaining of low idle speed should have their vehicle
repaired using the Workshop Manual.
NOTE: * Tampering with this screw will affect the idle contact switch
and/or throttle position sensor settings. This can lead to
rough idle and difficulty in diagnosis of idle quality
concerns.
* The TAS locations on the examples below may vary depending on
model year of vehicle. See Fig. 1.
Article Text
1983 Mazda RX7
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