Ford Town car 95

[ringo7]

Car has had Spark plugs and wires changed-also p.c.v
Changed whenever it is placed in drive has a detectable missing problem;especially as You shift to drive: This was the original Problem:Any thoughts

[discnik]

So the miss is more apparent at low idle.
Try doing a compression test on the engine. Anything under 100 psi in a cyclinder will cause a miss. Also a bad injector solenoid will cause a miss. Do you have a, " Check Engine", light on ?

What size engine ?

[ringo7]

Originally Posted by discnik

So the miss is more apparent at low idle.
Try doing a compression test on the engine. Anything under 100 psi in a cyclinder will cause a miss. Also a bad injector solenoid will cause a miss. Do you have a, " Check Engine", light on ?

What size engine ?

It is v 6 Eng;No check Eng light:

[discnik]

The 3.8 L ?

Does the engine idle rough when cold then seem to get better as it warms up? ( Possible vacuum leak)

If very noticable at idle and not as much at high RPM: Possible cyclinder with low compression.

Another possibility is that one of the coil packs is bad. If you want the coil testing procedure PM me and I will PM it to you.