1991-1997 BMW 8-Series: Reliability
Trouble Spots
Consumer Guide'sŪ Auto Editors have scoured repair bulletins and questioned mechanics to search for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer, however, we have our own expert looking at additional vehicle problems.
Air conditioner: The air conditioner compressor will shut down if the belt slips, which can occur after driving through a puddle and can be fixed by bypassing the A/C lock sensor control module. (1990-92)
Dashboard lights: Several problems with the hazard warning lights and turn signals activating by themselves, not blinking, etc. have been traced to problems with the flasher relay or the crash-sensor control module. (1992-95)
Poor transmission shift: The synchronizers in six-speed manual transmission get damaged if anything other than Dexron II automatic transmission fluid is used, causing notchy shifting. (1990-97)
Rough idle: Engine idles rough due to knock sensor picking up noise from water pump chatter when transmission is in drive and the air conditioning is on. (1997)
Rough idle: Engine may idle too high or run poorly (accompanied by a check engine light) due to vacuum leaks in the manifold gasket and/or leaking vacuum plugs on the fuel pressure regulator. (1997)