My heater blower comes on a long while after I turn in on. Sometimes it doesn't come on and sometimes it does. Everything else works well except for this The blower works great too when it runs.

Are you saying that there is no air blowing at times? You probably either have a blower motor with worn-out brushes (in which case, you need to replace your blower motor) or ypu have a loose connection in one of your blower motor control connections. When the blower is not working, check for power at the blower motor electrical connector under the right side of the dash. If there is power present when the blower is not working, then replace the blower motor. If there is no power, then you will have to troubleshoot your blower electrical circuits to find out what is causing the loss of power

I had a similar problem with my 2003 intrepid. The problem turned out to be the control panel. I went to a salvage yard and got one.

{: ) If the front a/c and heater is working fine, that's good. At least the problem can be isolated on the rear HVAC circuits only.
Check first the RR HVAC fuse 30amp at the underhood fuseblock and the IGN 3 fuse 10amp at the IP fuseblock. If you found them good, then you can begin diagnosing the blower circuits wirings and connectors.
A faulty blower definitely will not give any output. If it doesn't spin for some reason, rear a/c or heating cannot be circulated.
A faulty blower resistor or speed control processor can also cause a zero air output. Sometimes, the blower may only work at certain speeds only.
A faulty rear HVAC control switch may not give the proper signals to the blower resistor or speed controller, and in turn will render the blower motor disabled.
Sometimes it can be a terminal connector being loose or burnt. However, the most usual cause for this type of problem is a faulty blower resistor.

Locate the blower mtr and turn key on engine off.tap on blower mtr to see if that affects the blower operation

you need to replace the blower motor resister. on the inside, passenger side glovebox area or near the center. really easy to do. unplug the wires and take out a couple of screws, its that simple

sounds like a faulty switch and if it is you sould replace it before it completely goes out

short in the wire harness follow wires from blower to harness

If everything else is working, air direction and selection, blower speeds etc. Then first make sure coolant level is full if it is then make sure your thermostat is opening by watching your temp gauge on the dash and feeling your radiator hoses, both upper and lower, after the car has ran for about 10 minutes or so. Going into the engine they should be fairly close in temp. Then check your heater core for blockage by feeling your heater hoses coming out of the passenger compartment along the firewall in the engine compartment, they also should be fairly close in temp. If one is hot and the other cool then youor heater core is blocked. Also check your blend door, this is the door that controls airflow over your heater core or a/c evaporator in the air distribution compartment. When you move the control you can sometimes hear it moving from inside the car. Otherwise you will have to get up under the dash and listen and look to see if its moving. Hope that helps.

the blower motor could be on its way out other possibility's is a loose connector.

If it is noisy when it runs and sounds like it is slowing down, then starting up again, you probably need to replace the entire blower.