1994 Mercury Sable Intermittent No Crank
If they are checked out o.k.then move on to the solenoid usually located on the same side of the battery attached to the inner fender under the hood a bad solenoid would not turn the starter or just click when you turn the key in the ignition.
If the engine truns over slowly it may be the battery.
Suggested Repair
Load-test the battery and clean any corroded terminals. If the battery checks out, inspect the starter solenoid (often mounted on the starter). A careful tap on the solenoid with a long extension while turning the key can confirm a failing starter; if the engine then cranks, replace the starter.
Conversation Summary
The owner of a 1994 Mercury Sable 3.8L reports intermittent cranking and suspects the starter or solenoid, also asking whether tapping it with a hammer is safe and where the parts are. One reply advises checking and load-testing the battery and cleaning the terminals first, then checking the solenoid if those are fine. Another confirms a tap test can work if the solenoid is reachable, describes it as the small cylinder on the starter, and says to replace the starter if cranking occurs while tapping.
