Chrysler Repair: 95 Grand Prix SE - wont start, pontiac group, voltage measurement

Question
This is a little off base for you and I apologize but there are no specialists for the Pontiac group. But I'm hoping this is a generic problem typical of all cars.
My son has a 95 Grand Prix SE 3.1 litre engine.
It has been giving him trouble starting...someone said it has a clicking sound that makes them think of a relay constantly firing (maybe fuel pump?) and the ignition is hard to turn- could this be the problem that it's just not engaging to make the connection for starting (I'm not sure how this all works).
He has had a new starter put in, and a new battery.
Thank you for any help you can offer. He's a college student (paying his own way) and working part time.
Again thank you for your time.  

Answer
Hi,
If the repeatedly clicking occured when the ignition switch was in the run position, then that could be a relay for the fuel pump or a safety autoshutdown relay. The best thing to do would be to open the hood and listen for where the sound is coming from and try to identify the purpose of the device that is clicking. If it was a loud clicking and instead was being made when the key was in the starter motor position then that was probably the starter motor solenoid (which if it was faulty would have been replaced when the new starter motor was installed because it it part of the motor) or it could be the starter motor relay which controls the current to operate the starter motor solenoid which makes a softer click sound. Again look under the hood if that sound is still occuring, because that too would prevent the starter motor from operating. It could be a flakey ignition switch internal contact that is supposed to reliably energize the starter relay, or the relay itself could be flakey. A voltage measurement at the starter relay would tell which is the problem.
If the starter motor is now working properly but the engine will not catch and run then you need to look elsewhere for the reason. If the clicking is still happening then again the source of the sound needs to be identified and considered for replacement or checking for what affiliated electrical circuit to that device might be malfunctioning. Until that is remedied the no start situation will continue. So I would suggest getting into the engine compartment while a helper operates the ignition switch and doing some listening and identification. With modern engines there is so much stuff under the hood that unless it is labelled by the manufacturer you pretty much need to get a repair manual to help diagnose problems. The best lower cost manuals are published by Haynes and are sold at auto parts stores and are specific for car-line/year of manufacture.
So because of budget constraints I would advise getting a manual and learning about the car so as to be able to do the repairs himself.
Roland