What are the most common Volvo 740 problems?
According to Au7o's analysis of 175+ owner reports, the 1990-1992 Volvo 740 has 5 documented issues. The most frequently reported are: Overdrive Relay and Solenoid Failure, Automatic Transmission Overdrive Solenoid Failure, Heater Core Leak. None are rated critical, but regular maintenance is recommended.
Is the Volvo 740 reliable?
The 1990-1992 Volvo 740 has 5 known issues documented across 175+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Volvo 740 problems?
Repair costs for known Volvo 740 issues range from $30 to $1,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 1990-1992 Volvo 740 Overdrive Relay and Solenoid Failure?
The AW70/71 automatic transmission in the 740 suffers from overdrive relay and solenoid failures. The overdrive relay on the firewall can corrode, and the M46 overdrive solenoid wears out, causing the transmission to lose its overdrive gear. Without overdrive, the engine revs hig… Repairs typically run $50-$400. Severity: medium.
What is the 1990-1992 Volvo 740 Automatic Transmission Overdrive Solenoid Failure?
The AW70/71 automatic transmission overdrive solenoid fails, causing loss of overdrive (4th gear). The transmission also develops governor issues causing erratic shifting. Repairs typically run $200-$800. Severity: medium.
What is the 1990-1992 Volvo 740 Heater Core Leak?
The heater core develops a leak, causing a sweet coolant smell inside the cabin, fogging windshield, and wet passenger-side carpet. Replacement requires significant dash disassembly on the 740. Repairs typically run $400-$900. Severity: medium.
What is the 1990-1992 Volvo 740 Fuel Injection Relay (White Relay) Failure?
The Volvo 740 fuel injection relay (commonly called the white relay) is a known failure point. When it fails, the engine cranks but will not start because the fuel pump and fuel injectors lose power. Repairs typically run $30-$150. Severity: medium.
What is the 1990-1992 Volvo 740 AW70/AW71 Automatic Transmission Overdrive Failure?
The AW70/AW71 automatic transmission overdrive unit fails, causing a loss of overdrive gear and sometimes a harsh engagement. The overdrive solenoid and associated wiring are common failure points. Highway RPM increases significantly without overdrive. Repairs typically run $100-$1,500. Severity: medium.
