Situation:  High amplitude spikes when starting and again on shutdown of
engine from automobile.

 Sensor is about 3 feet from car.

EMF appears to come from auto alternator since I can see it upon engine
shutdown.

Any suggestions would be appreciated to mitigate the EMF from the sensor
pickup coil without relocating it.

 How about a lead shield?  The kind the dentist uses for X-ray's.

Situation:=A0 High amplitude spikes when starting and again =
on=A0shutdown of engine from automobile.
=A0Sensor is about 3 feet from car.
EMF appears to come from auto alternator since I can see it =
upon engine shutdown.
Any suggestions would be appreciated to mitigate the EMF fro=
m the sensor pickup coil=A0without relocating it.
=A0How about a lead shield? =A0The kind the dentist uses for=
 X-ray's.