Tracker 4x2 L4-1590cc 1.6L (1991)
Torque Converter Clutch Relay: Customer Interest
Torque Converter Clutch - Chuggle/Hunting Condition
FILE IN SECTION: 7 - Transmission
BULLETIN NO.: 57-71-09
DATE: April, 1995
SUBJECT:
Torque Converter Clutch (TCC) Chuggle/Hunting Condition (Install Time Delay Module Kit)
MODELS:
1989-95 Geo Tracker
with Hydra-matic 3L30 Automatic Transmission
CONDITION
Some owners may experience a Torque Converter Clutch (TCC) chuggle/hunting condition.
TCC Chuggle/Hunting occurs with the vehicle at normal operating temperature, in 3rd gear, at approximately 40-45 mph on a level road on a slight
grade (mostly occurring when driving uphill), the engine speed at approximately 2500-2700 rpm and with the throttle opening at approximately 10-50
percent. Under these conditions, rapid, repeated apply/release of the converter clutch may cause a bucking or jerking sensation.
CAUSE
This concern is due to governor pressure switch instability when the vehicle speed is constant at TCC apply.
CORRECTION
Install the time delay module kit into the TCC relay circuit to address the TCC chuggle/hunting condition.
SERVICE INFORMATION
When servicing a transmission for a TCC chuggle/hunting condition, install the time delay module kit to resolve this condition.
TCC Apply Time Delay Module Installation Instructions:
