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xsvectOR, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 15039
Experience:  ase
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Binds up in first gear, 60000, no, 2001 sw1, yes, reman

Customer Question

binds up in first gear
JA: How many miles are on the car? Have you noticed any fluid leaks lately?
Customer: 60000 , no
JA: What is the model/year of your Saturn?
Customer: 2001 sw1
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: yes, reman valve body
JA: Anything else you want the mechanic to know before I connect you?
Customer: doesn't slam in gear , reverse is fine , shifts fine but seems like its chained to a tree in first gear , really have to get on it to get it to move
Submitted: 1 month ago.
Category: Transmissions
Customer: replied 1 month ago.
facing a downhill grade it will naturally roll freely in neutral, but will stop like applying the brake when shifted into drive
Expert:  xsvectOR replied 1 month ago.

any codes? any slippage?

Customer: replied 1 month ago.
Expert:  xsvectOR replied 1 month ago.

and your sure its the transmission?

Customer: replied 1 month ago.
what else could it possibly be ?
Customer: replied 1 month ago.
I put it on the lift and it goes in reverse just fine , wheels turn freely in neutal , but in drive you really have to give the gas to get the wheels to turn
Expert:  xsvectOR replied 1 month ago.

you sure the conveter is not plugged?

Customer: replied 1 month ago.
Expert:  xsvectOR replied 1 month ago.

then you have a internal pressure loss in the unit have you checked line pressure?

Customer: replied 1 month ago.
no , what should the pressure be ?
Expert:  xsvectOR replied 1 month ago.


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IMPORTANT: Be sure to perform both "Stepped Pressure Test" and "Maximum/Minimum Pressure Test" of the "Line Pressure Test."

Run engine to bring transaxle to running temperature of 70°C (158°F).
Turn engine off.
Remove transaxle fluid temperature sensor and install pressure gauge.
Reinstall temperature sensor in wire harness.
Connect the Scan tool.
Key On engine Off. On first menu selection, select "Special Functions."
Select Line Pressure.
Transaxle in Park.
Scan tool will prompt you to start engine.
Select Run and the test will begin. The test will set engine speed to 1500 rpm and command line pressure up in steps from 396 - 1518 kPa (57 - 220 psi) in 100 kPa (15 psi) intervals.
As test is in progress, watch the gauge to assure the gauge readings follow the commanded pressures. Use a dry erase marker to mark the face of the gauge because it will be difficult to record the readings in time.

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Oil pressure maximum and minimum values at idle should be checked using the following procedure:
IMPORTANT: For proper reverse operation, it is important to have at least 1206 kPa (175 psi) of system pressure in reverse at 70°C (158°F).
With gauge connected and bans at operating temperature.
With engine idling in Park, line pressure should be 400 - 600 kPa (58 - 72 psi).
Remove line pressure fuse (10 amp TRS LP) UHJB.
With engine idling in P (Park), pressure should be 1206 - 1690 kPa (175 - 245 psi).
NOTE: High value may be slightly lower if transaxle temperature is greater than 110°C (230°F).

IMPORTANT: With engine in Park, and the 10 amp TRS LP line pressure fuse removed. minimum pressure should be 1206 kPa (175 psi).

Remove pressure gage, install temperature sensor, use Saturn P/N 21485278 sealant with Tenons on threads (or equivalent). After the sensor has been connected, clear diagnostic trouble codes caused by having the sensor disconnected. Torque:
Sensor - Transaxle Fluid Temperature Sensor-to-Case: 8 Nm (71 inch lbs.)

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