I have a 1999 dodge durango that after it has warmed up and you park it, it will turn over but will not crank. If you let it sit and cool off, usualy acouple of hourse it will crank right up. Can you help me?

It sounds like a bad starter solenoid or starter. The problem is since the starter sits so close to the motor it gets "heat soaked" constantly and eventually takes its toll on the solenoid. The only way the solenoid will work is when it is cool, when it is hot it seizes up and won't work so in turn it won't turn your starter on. I woulsd replace the starter/ solenoid and it should be working fine after that.

I know this is a little late but may help someone in the future. . . Had the same problem with my 99 durango, once it warmed up from driving or even just from sitting in the sun on a hot day it would crank but not turn over. Once it started it ran fine, and on cooler or breezy days i could just leave the hood cracked and it would be ok. After going to a couple mechanics and a summer of pouring water on it (to get it to cool down enough to start), finally figured out it was the "Camshaft positioning sensor".It's located inside the rotor, and it's just a plastic disk with a plug on it, cost me $8 for a new one! The problem i kept running into was every time i called a parts store they would tell me no such part exists for that car, or what they would try to sell me was not the correct part. Basically, each parts store has their own way of saving inventory to the computer and if you don't know the exact name they have you're part stored under in their system you're sol. Unless you're lucky enough to get someone with some knowledge and willingness to help. Bottom line; cheap, quick, and simple fix!