"Randolph" <trash@junkmail.com> wrote in message
news:4001BE14.7C041872@junkmail.com
> That would work, except I am pretty sure the 2000
> Passport has a distributorless ignition system and you
> won't find a conventional single coil.

Doesn't have any coil? Or multiple coils? Multiple coils is fine,
especially with a learning tach. In the case of the old Chevy motors with 1
coil per 2 cylinders for example, each coil, when using the DMM test, would
read 1/3 actual RPM.

Either way, if the wire under the dash or kick panel is a true tach signal,
the DMM test I mentioned should still apply.