Not starting new battery, starts sometimes but not every time. Don't know why, everything else seems to be working.

sound like time chain want to go out or timing belt. or drive shaft rod

Its possible the glow plugs when its warm the diesel is warm and starts more easily when its cold the diesle needs warming more so the glow plugs work harder in the winter only way i know how to test them is to take 1 out at a time turn the pre ignition on so the glow plug light comes on and the plug should glow red if not buy the 4 and replace the lot you could also check the wireing going to the plugs hope this helps ivan

Hi
It sounds to me like it could be a glow plug fault !
The glow plugs heat the diesel before it combusts. An easy way to diagnose this is check your exhaust after cranking on a cold morning if you have thick white smoke then you've probably got a glow plug down on 1 of your cylinders or maybe more
Hope this helps Nick

I would suspect the fuel pump is the problem, it may be sticking at times and this causes a no start. The pump is located inside the fuel tank and it is electric.

Check battery cables at battery may be loose or corroded don't disconnect unless memory is maintained always remove neg first and don't reconnect until pos is connected and tight

Check connections to the starter and ground that goes to engine block.Also,Starter could have bad solenoid. don-ohio

there is a starter relay that may be sticking, keeping the starter engaged. And also not letting it start.

do you have remote start on that truck? if you do, it has a hood safety switch that will keep it from starting if hood is open. That hood switch is quite easily identifyable. Look for it on the drivers side, either close to the firewall or right at the front of the fuse box.itsa worth taking a look

We have a brand new Jeep Patriot 2010 have had it only 2 mths. We have had problems starting it also - this morning it wouldn't start at all I was able to unlock the car via button on key and when i went to start it - it tried to click over once but unsuccessfully...after that everything died and it wasn't able to click over at all!!!! Nothing was working not even the radio, lights nothing - I was actually unable to lock the car via button because it seemed as though everything went dead.. This has happened once before but it has never been this bad last time the radio and lights etc were working andit was trying to click over and finally did... I don't know what's wrong with can anyone help me??????

I HAVE THE LILCONL TOWN CAR 1993 BUT THE SUNRROF DONT OPEN I DON NOT WHERES THE FUSE