I'm running out of ideas. I take it this is a V6.
The 93 and 94 will run even if the crankshaft position sensor is disconnected. (the 95+ will not).
The distributors are a notoriously weak spot. And even cranking the engine over with the spark plugs disconnected can damage the disty, so there is a spark but it's too weak to start the car (I know because i did this once). I know you have spark, but is it a strong white/blue spark, or a weak yellow one? And checking for spark at the wires may not be enough, if it's not strong enough to jump the spark plug gap. And new (remanufactured) disty's are notoriously prone to fail.
Any chance one of the air hoses round the back of the engine has become disconnected? Have a look and feel around there.
When you turn the key and the engine cranks, does it sound normal, cranking at the normal speed?
Is it very cold where you are?
Last edited by NickR; 2-18-13 at 8:25.