Firstfives.org

Hey guys,

We’re starting on swapping in a B35 from a ‘91 E32 auto, and had a quick question. Anyone who’s done a B35 swap with Motronic, are there any specifics that we need to know about the wiring? Are there any adaptations to make so we can use the E32 alternator, or do we have to use the E12 ...

Update: the car successfully turned on and ran for a while again after sitting for a week, but it now is refusing to start as before. The car was refusing to start after sitting overnight last weekend, so it does not seem to necessarily be a hot start issue. It has successfully run with two ...

Oh, sorry, forgot to mention we replaced the distributor cap and rotor.

Thanks for the tip on the resistor! We'll try bypassing that and see if it works. We were wondering if maybe it wasn't providing the right voltage when it was cranking.

I purchased a 1981 528i with an M30 out of a '79 and we've been working on getting it running. It's been sitting for at least a few years, but we've replaced all the intake gaskets and all the air/coolant/fuel hoses, as well as the ECU, wiring harness, and AFM. After cranking for a while, it ran ...