940 / 960

1990-1998 / Sedan / Estate / Sweden

All 940 / 960 problems All workshop issues

Common Transmission and Drivetrain

AW71 automatic transmission issues (940)

Symptoms

Harsh shifts, slipping, delayed engagement, or the transmission won't shift out of first gear. The overdrive may not engage. Flashing arrow on the dashboard indicates a fault.

Cause

These transmissions are robust but not bulletproof. Worn clutch packs, tired valve body, or low/dirty fluid cause most issues. The speed sensor (on the gearbox) fails and prevents upshifts.

Fix

Change the fluid and filter every 50,000 km, Volvo says "lifetime fluid" which is a lie.

Use Dexron III or equivalent.

If shifting is harsh, adjust the kickdown cable.

For slipping or no upshifts, test the speed sensor with a multimeter (resistance should be around 1kΩ).

If it's failed, replace it, cheap fix.

Serious slipping or grinding means a rebuild or replacement.

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// More 940 / 960 problems

Other known issues

Common Transmission and Drivetrain

AW30-43 automatic transmission issues (960)

Similar to the AW71, harsh shifts, delayed engagement, or limp mode. Some report juddering on take-off or when downshifting.

Common Transmission and Drivetrain

Manual gearbox and clutch issues

Difficulty selecting gears, grinding, or clutch slip. Clutch pedal feels heavy or doesn't return properly.

Common Transmission and Drivetrain

Propshaft and differential issues

Clunking when changing direction (forward/reverse), vibration at speed, or whining from the rear.

Critical Engine

Oil leaks everywhere

You'll find oil pooling under the car, dripping from the valve cover, front and rear main seals, cam seals, or oil cooler lines. The B230 engines (940) and B6304 (960) both weep oil as they age, it's not if, it's when.

Common Engine

Flame trap and PCV system clogged

Engine bogs down, idles rough, struggles to rev, or won't start when hot. You might get excessive crankcase pressure, blowing out seals and pushing oil into the intake.

Critical Engine

Rough idle, hesitation, or won't start (fuel system issues)

Stumbling acceleration, poor fuel economy, hard starting, or stalling. Sometimes it runs fine cold but misfires when warm. Check engine light may be on or flashing.

View all 24 940 / 960 problems