how hard is it to change a starter on a 95 mercury grand marques, and where is it located.

Removal

WARNING: When servicing starter or performing any maintenance in the area of starter, note the heavy gauge input lead connected to the starter solenoid is hot at all times. Make sure the protective cap is installed over the terminal & is replaced after service.

NOTE : When battery has been disconnected & reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the strategy.
Less than an hour labor time.


Disconnect battery ground cable.
Raise & support the vehicle on a hoist.
Disconnect starter cable & push-on connector from starter solenoid. CAUTION : When disconnecting hard-shell connector at S-terminal, grasp the plastic shell & pull off. Do not pull on wire. Be careful to pull straight off to prevent damage to the connector & the S-terminal. If any part of the connection is damaged, replace the damaged components.
Remove upper mounting bolt.
Remove lower mounting bolt & starter.
Installation


Position starter motor to engine & install upper & lower bolts finger-tight.
Tighten the upper bolt to 20-27 Nm (15-20 lb-ft).
Tighten the lower bolt to 20-27 Nm (15-20 lb-ft).
Connect starter solenoid connector. Be careful to push straight on & make sure connector locks in position with a notable click or detent.
Install starter cable to starter terminal. Tighten to 9-14 Nm (80-124 lb-in).
Replace red starter solenoid safety cap.
Lower vehicle to floor.
Connect battery ground cable

The starter is located on the lower passenger side of the engine on this particular vehicle. To remove/replace the starter is fairly straightforward as it is with most vehicles. On this particular one, there are three 10mm bolts that secure it to the transmission. The most difficult part of the job will be access to the top bolt. Hope this helps.