1998 bmw 740il fusebox - 7 Series BMW Cars & Trucks

SOURCE: 1998 BMW 740IL WILL NOT START

This happened to mine.

I took it back to the place where i bought it and at this time i still had warranty on it, they went and looked through it and found that the battery cables were bad.

Hope this helps

SOURCE: 1998 bmw 740il will not start even with new a battery

If you checked all the fuses try putting the car in neutral sometimes the shifter gets misadjusted and wont start till the car is completely in park.If not check for a lose wire to the starter.If the car has an after market alarm you will have to turn it off before starting there should be a little buuton under the drivers dash or kick panel.GOOD LUCK

SOURCE: 96 bmw 740il misfire

This is a pretty common problem. I would change your valve cover gaskets. They run around ~ 50 bucks. If they are bad it will leak oil into spark plug well and cause a misfire. Very known on the 740.. Also if tune was not anytime not too long ago id change spark plugs while you at it. Then clear the computer and if you still get misfire on 8 try changing the ignition coil which is right about the cylinder with cylinder ignition coil 5. clear the computer. if you get random misfire and misfire cyclinder 5 after then its your ignition coil. parts store runs around 100 bucks

SOURCE: 1998 bmw 740il blower motor where is it

The blower motors on this vehicle lis located underneath the dash. The upper half of the dashboard is removable and entails removing the spedometer cluster. The airbag also needs to be removed to get to some usually white triangular looking nuts that hold the wooden trim above the glovebox. Removal of the front side panels to the left and right of the windsheild is also required. If this helps; the blower motor is located right below the large center vent in the center of the dash.

SOURCE: 2001 BMW 740iL is sputtering when I accelarate and shaky when idl

A tune-up and throttle body clean-up is a good idea, but mind you on those cars, the valve covers usually leak into the spark plugs and coils, causing the car to misfire. If you are replacing the plugs and find them soaked in oil; replace your valve cover gaskets or you will be back to the same problem soon after the oil soaks the new plugs back up again.