No ignition

["vin4258" <vin4258@xxxx>]

Ever since the car overheated on June 15, I noticed a grinding noise 
when starting it. Not all the time, but was there. The car started 
right after the short noise and ran fine. I have only started the 
car maybe 10 times since then and now it won't start at all. I would 
say that the grinding noise was not a big enough problem to cause 
this, but I don't know. When I turn the key, nothing happens. The 
battery is charged and everything works, but the starter won't do 
anything. My dad came over and we first jumped the battery cable at 
the starter to the solonoid and it started fine. We assume that the 
starter is OK, and went to the relays. I swapped the ignition relay 
for the similar high beam relay and the car started, and the high 
beams worked. We thought the problem was fixed and he left. Four 
hours later I went into the garage to try it again and it had the 
problem again, so maybe it's not the relay. I can hear a slight 
clicking from the relay compartment when I try to start it, but no 
clicking from the starter. NOthing but the relay noise. I cleaned the 
resistor behind the engine and can't think of anything else needs to 
be cleaned. The car has been taken care of and has 6500 miles. If 
the problem is the key switch, how do I hot-wire the car to check? 
If this is a common problem, what other causes are there. FYI the 
car runs fine and I have never had a problem with it. I pull started 
it when it wouldn't start the first time, but don't want to do that 
again or get under the car to start it (or have some rewire 
contraption in the relay compartment.)