'92 exp Trouble starting

[bverex]

Been having issues for a month with starting. Have used starting fluid in air intake and that usually gets it going. If I don't run it too hard with lots of starts and stops, it fires right up. If I go too long and it gets hot, it doesn't want to start. If it sits overnight, usually need to spray starter fluid again. Couldn't get it to fire today at all. New battery. Can hear fuel pump kick in, and I know I've been getting spark. Where is IAC? Could that be an issue? Fuel relay? Bad fuel? Fuel filter? Where would you start?

 

[Roadrunner777]

Beg borrow or steal a fuel pressure gauge and start there.

 

[arco777]

Agreed. Check fuel pump with pressure test kit, check fuel filter, and swap fuse box relays around to eliminate the fuel pump relay as a possibility.

Check after a long drive if your fuel pump relay is hot. If so, either your relay is faulty, or your fuel pump is drawing excessive amperage due to being worn out or pushing fuel through a clogged filter.