How do install a tach on a 00 ford ranger 2.5l I have it hooked up to one coil but it has 2 randomly on a 4 cyl motor if that doesn't confuse everyone 8 spark plugs 4 cyl is the dumbed down version?

Answer 1

There are two coils on the 2.5 one fires on intake and one fires on exhaust stroke. the easy way to figure this out is look at the plug wires one set leads under the exhaust manifold thus the exhaust and the other leads to the passenger side of motor the intake. There is a plug on each of these and it really won't make much difference which plug you hook up to because they fire very close but I would hook it up to the intake. three wires the grey and light orange wire is the wire you should hook it up to.