1991 ACURA NSX Service Repair Manual

Symptom-to-Component Chart

Hydraulic SystemProCarManuals.com

(cont'd)ProCarManuals.com

Symptom-to-Component Chart

Hydraulic System (cont'd)ProCarManuals.com

ProCarManuals.com

Road Test

NOTE:
Warm up the engine to normal operating temperature (the cooling fan comes on).
When the engine coolant temperature is below normal operating temperature, the shift point is higher than specifiedvehicle speed.
Range 1. Apply parking brake and block the wheels. Start the engine, then move the selector to while depressing the brake
pedal. Depress the accelerator pedal, and release it suddenly. Engine should not stall.
2. Check that shift points occur at approximate speeds shown. Also check for abnormal noise and clutch slippage.
NOTE: Throttle position sensor voltage represents the throttle opening.

DIGITAL MULTIMETER

KS–AHM–32–003

ECM

TEST HARNESS

07LAJ–PT3010A

1. Connect the Test Harness between the ECM and connector (see section 11).
2. Set the digital multimeter to check voltage between D11 (+) terminal and D22 (-) terminal for the throttle posi- tion sensor.ProCarManuals.com

Upshift

Downshift

3. Accelerate to about 35 mph (57 km/h) so the transmission is in 4th, then shift to . The car should immediately

begin slowing down from engine braking.

CAUTION: Do not shift from to at speed over 76 mph (123 km/h): from to at speed over 45 mph (73

km/h); you may damage the transmission.

(1st Gear)

1. Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage.

2. Upshifts should not occur with the selector in this range.

(2nd Gear)

1. Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage.

2. Upshifts and downshifts should not occur with the selector in this range.

(3rd Gear)

Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage.

(Reverse)

Accelerate from a stop at full throttle, and check for abnormal noise and clutch slippage.

(Park)

Park car on a slope (approx. 16°), apply the parking brake, and shift into Park. Release the brake; the car should not

move.ProCarManuals.com

Stall Speed

Test

CAUTION:

To prevent transmission damage, do not test stall speed for more than 10 seconds at a time.

Do not shift the lever while raising the engine speed.

Be sure to remove the pressure gauge before testing stall speed.

1. Engage the parking brake and block all four wheels.

2. Connect the tachometer, and start the engine.

3. Make sure the A/C switch is OFF.

4. After the engine has warmed up to normal operating temperature (the cooling fan comes on), shift into position.

5. Fully depress the brake pedal and accelerator for 6 to 8 seconds, and note engine speed.

6. Allow 2 minutes for cooling, then repeat same test in and position.

NOTE:

Stall speed tests should be used for diagnostic pressure only.

Stall speed should be the same in and

Stall Speed RPM: Specification:
1,950-2,250
rpmProCarManuals.com

Fluid Level

Checking/Changing

Checking

NOTE: Check the fluid level with the engine at nor-

mal operating temperature (the cooling fan comes

on).

1. Park the car on level ground. Turn off the engine.

2. Remove the dipstick (yellow loop) from the

transmission, and wipe it with a clean cloth.

NOTE: Check the fluid level for to 90 seconds

from 60 seconds after the engine had shut off.

3. Insert the dipstick into the transmission.

4. Remove the dipstick, and check the fluid level. It

should be between the upper and lower marks.

5. If the level is below the lower mark, add fluid into

the tube to bring it to the upper mark. Use Honda

Premium Formula Automatic Transmission Fluid or

an equivalent DEXRON® II Automatic Transmission

Fluid (ATF) only.

6. Insert the dipstick back into the transmission.

UPPER

LOWER

DIPSTICK

(YELLOW LOOP)

DRAIN PLUG

50 N·m (5.0 kg-m, 36 Ib-ft)

SEALING WASHER

Replace.
Changing

1. Bring the transmission up to operating temperature

by driving the car. Park the car on level ground, turn

the engine off, then remove drain plug.

2. Reinstall the drain plug with a new washer, then refill

the transmission to the full mark on the dipstick.

Automatic Transmission Fluid Capacity:

2.9 (3.1 US qt., 2.6 Imp. qt.) at change

7.0 (7.4 US qt., 6.2 Imp. qt.) after overhaul

6.3 (6.7 US qt., 5.5 Imp. qt.) after overhaul

with new torque

converter.ProCarManuals.com