Category E34

M30 cylinder head gasket replacement

I had to replace the cylinder head gasket on my 1991 735iA because of pressure leaking out into the cooling system. Eventually the coolant went through to some oil channels. The lobes on the camshaft were worn, as were the…

Door seals

Door seals on a 20+ years old car are usually pretty bad, with the one for the drivers door being the worst. Except wear they also shrink. I bought some used door seals from an E60 and used in my…

E32 / E34 Servotronic repair (new relay type control module)

Post not finished! After experiencing intermittent problems with the powersteering in the 525tds, conclusive testing showed the Servotronic control module being at fault. The unit is located in the left front footwell, behind the loudspeaker. In my case the transistor…