I have an 87 Range Rover that is going through ignition modules like crazy and they are not cheap. I also burned up 2 ignition coils. I can't seem to locate the problem. The Range Rovers had a problem with ignition modules getting too hot and burning out because they were right next to where the radiator hose connected to the engine and it was on the back side of the distributor. They made a relocation kit to remedy this problem and I bought one of them. This seemed to do the trick and I was just beginning to trust the vehicle when it burned out another module. The only thing I haven't tried yet is running another ground from the block to the frame and putting a 12 volt resister before the ignition coil. Has anyone run into a problem like this before? What causes and ignition module to burn up after 500 miles? The modules have a 1 year warranty from the place I order them from and they deal strictly in Rovers. He said I've gone through more modules than all the other customers combined last year!