NorthGaXJ

Every morning I roll the XJ out of the garage so I will not wake my daughters up in the morning- 1yr and other 2 months- I will lower garage door then crank right up- this morning I rolled it out and stopped put in park and wanted to turn over then nothing..I tried 4 more times and it didn't even turn over..I put it in neurtral and rolled back some more and turned it over again in neutral and it starts and ran good to work..When I got to work put it in park and started it up again with no problem..What would cause it not to start this morning?? I don't live on a big hill or anything like that although it is not completely flat, if that makes any difference.. Also I just had the heater control valve replaced recently- last week- I noticed when I popped the hood this morning that my coolant is at the ADD mark, last week it was in between Full and Add.. I know these are noobie questions but I have not worked on cars in awhile and apprecieate all help.

DaddyCat

Could be your battery is weak, you can have it tested for free at many auto parts stores or test it yourself if you have a multimeter. Lets hope your coolant just needs to be topped off. After your heater control valve was replaced might of took a week for air to work it's way out of the system.
Testing Battery:
http://www.2carpros.com/articles/how...-a-car-battery