I'm having the typical problems described in this forum attributable to a faulty OVP (extreme sluggishness after warm up and rough idle).I've got relatively new plugs/rotors/harness/engine mounts so... I've started looking under the hood for it and can't seem to locate it. Does anyone know for sure that a '92 400E has one? Exact description and location would be most helpful as I hope to replace it , Thanks