Summary
The Volvo 700 Series has 12 recalls spanning the 1983–1989 production run, with the most serious being a 1989 model year fuel tank seepage risk where high temperatures, an overfilled tank, and a loose sending unit lock ring can combine to allow fuel to escape from the top of the tank and ignite.
Two other fire-related recalls affect earlier model years. On 1986 models, the driveshaft can contact and score the fuel tank, wearing through to cause a fuel leak and fire risk. On 1985 740 and 760 models equipped with air conditioning, the engine wiring harness can chafe against an air conditioning pipe, short out, and char wiring insulation in a way that can lead to an engine compartment fire. Also from 1985, the front driveshaft flange bolts on certain 704, 744, and 745 variants can loosen and let the driveshaft separate from the transmission, damaging the gear selector and cutting drive power to the rear wheels, which reduces vehicle control.
The 1987 780 has two separate recalls: the control unit for the airbag and seatbelt pretensioner can fail to trigger properly in a crash, reducing occupant protection, and wiring under the front seats feeding the seat heaters, power seat motors, and seatbelt warning indicator can chafe and short circuit. On 1988 models, two electrical chafing issues appear: 764 and 765 headlight switch components can work loose and short out, cutting headlight function and charring wiring, while 744 and 745 battery cables can wear against the engine bay due to increased engine movement, also risking a short.
Going back to 1986 station wagons, the tailgate child lock can fail to hold, allowing the tailgate to be opened from inside. The 1985 models also have an auxiliary seatbelt routing issue where inadequate labeling can lead occupants to thread the belt incorrectly, making it possible for the belt to release unexpectedly. The 1985 water pump pulley can fracture and throw pieces around the engine compartment, posing a hazard to anyone working on the vehicle at the time. The oldest recall covers 1983 760 GLE models, where out-of-spec brake warning valve end-plugs can seep brake fluid through the electrical connection and prevent brake failure alerts from reaching the driver.
