Fuel - Slow Deceleration, Throttle Closed, Above 5 MPH
Group Ref.: EngineBulletin No.: 316006A
Date: November, 1993
SUBJECT:
SLOW DECELERATION WITH CLOSED THROTTLE ABOVE 5 MPH
(READJUST AIR RATE)
MODELS:
1990-93 CADILLAC DEVILLES, ELDORADOS, FLEETWOODS, SEVILLES, AND SIXTY SPECIALS (EQUIPPED WITH 4.5L OR 4.9L ENGINES)
THIS BULLETIN IS BEING REVISED TO CORRECT THE WARRANTY STATEMENT, AND CANCELS AND SUPERSEDES BULLETIN 316006 PUBLISHED OCTOBER, 1993.
Some owners may comment about slow deceleration with closed throttle above 5 mph. This may be particularly noticeable after performing bulletin T-93-44 (Corporate bulletin 016540R) even though all engine adjustments have been set according to published service information.
To correct this condition readjust the minimum air rate to between 400 and 450 rpm, the TP Sensor setting to .55 volts, and reset TP Sensor/idle learns using the procedures listed in the appropriate Service Information Manual.
For warranty purposes use:
Labor Operation: J6358
Labor Time: Use published labor time