Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK1991CENTURY L4-151 2.5L VIN R TBIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTRANSMISSION POSITION SENSOR/SWITCHADJUSTMENTS
1991 Buick Century L4-151 2.5L VIN R TBI
Transmission Position Sensor/Switch: Adjustments
1991 Buick Century L4-151 2.5L VIN R TBISECTION Adjustments
1. Place transaxle shift lever in NEUTRAL.
2. Loosen switch attaching screws.
3. Rotate switch on shaft assembly to align service adjustment hole with carrier tang hole.
a. Insert 2.34 mm (3/32 inch) maximum diameter gauge pin to a depth of 15.0 mm (5/8 inch).
4. Tighten attaching screws. See SPECIFICATIONS/MECHANICAL for torque values.
5. Remove the gauge pin.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.