I have a 1995 jeep grand Cherokee. When it sits overnight it takes a long time to crank. I changed the wires and spark plugs, air filter, cleaned the IAC and changed the fuel filter and starter. Also when I accelerate it hesitates At times. Once I get it started it cranks up with little hesitation. Any suggestions would be greatly appreciated.

 

Welcome to the forum.

Which engine?

What is the measured battery voltage when cranking the starter?

 

Check your fuel pressure and see if it fades overnight. You could have leaky injectors or fuel pump checkvalve. Before the morning startup, you should be getting a small squirt of fuel out of the rail before you turn the key on. If not, try turning the key on to prime the rail several times before you crank it.