Eclipse Spyder GS L4-2350cc 2.4L SOHC MFI (2001)
Fluid - A/T: Customer Interest
A/T - Shudder/Surge/Vibration From 35 - 50 Mph
No.: TSB-03-23-006
DATE: October, 2003
MODEL: See below
SUBJECT:
TORQUE CONVERTER VIBRATION
PURPOSE
Some customers may complain of shudder, surge, and/or vibration (possibly intermittent) when driving 35-50 mph (56-80 kph) at steady throttle. This
may be due to the breakdown of the A/T fluid, creating a torque converter damper clutch shudder, which can be eliminated by following the procedures
in this bulletin.
NOTE
On 1999 Montero Sport rear-wheel-drive models, partial torque converter lock-up also causes rear leaf spring chatter.
AFFECTED VEHICLES
2003 Outlander
2002-2003 Lancer
1997-2002 Mirage
1999-2003 Galant
2000-2003 Eclipse
2001-2003 Eclipse Spyder
1997-2003 Diamante
2001-2003 Montero
1999-2003 Montero Sport
PROCEDURE
NOTE
The information in this bulletin applies to SP-III ATF only. The friction coefficient of SP-III is about 10% lower than that of SP-II, which was used
in TSB-01-23-010. Therefore, these specifications are different than those in the previous TSB.
1.
Test drive the vehicle to determine whether the shudder/surge/vibration is an engine or transmission concern. Be sure the engine reaches operating
temperature. Then turn the engine off and inspect for engine mechanical problems. Check engine base settings and adjust if needed.
a.
If the shudder/surge/vibration is an engine concern, refer to Group 11 in the appropriate service manual for diagnosis and repair procedures.
b.
It the shudder/surge/vibration is a transmission concern, NOT an engine concern, continue with Step 2.
2.
Test drive the vehicle to determine whether the condition occurs during torque converter clutch partial lock-up. Use the scan tool data list to drive
