Car doesn't start, unless lights are on

Hi Andy, The links below are two short youtube videos that shows how to fix a car that doesn't start,
The 1st link is a car that won't crank over and the 2nd link is a car that cranks over but won't start...CHEERS..
https://www.youtube.com/watch?v=TSE0fOrujW0 Fixing Car That Does Nothing When You Turn The Key

Fixing Car That Cranks But Doesn Start Up
Also you can try these.......
Camshaft Position Sensor P0340 Testing and Replacement HD

Crankshaft Position Sensor car not starting coil spark

possible but my money is on a bad battery. have a load test done on the battery. I suspect that the over heating problem is not completely fixed as water pumps will still pump water as long as they can be turned . Probably all that was done was to tighten the drive belt . Unless the pump seal was worn out and you were loosing coolant.. Clicking noise when trying to start is bad connection or dead battery.

I would have that starter tested. It could be intermittently engaging and disengaging. This can happen to the starter drive. I`m not sure why it cuts out after you jump start it,since the alternator takes over after cranking the engine. Unless the starter drive is sticking. My other thoughts are on a fuel pump problem.Or fuel problem period such as an obstruction of gas getting to the engine. Fuel filter maybe or fuel pump relay!

i have the 2.7 as well. mine is in an intrepid. Car was running perfectly fine when i went into bestbuy and when i came out 5 min later i tried to start the car and it would just crank n crank. no start though. eventually it started after lots of cranking. after a couple of times of doing this in order to start the car i would get nothing from the startrer. everything had power and everything electrical worked. found out that if i went under the car and hit the starter with a hammer a couple of times it would finally crank again. but i had to do this every time i shut the car off and wanted to start it again. i loive in WI and its wintyer right now so it really sucked to do this. took it to my buds shop and pulled the starter out and dissected it and found that the (i believe they are "brushes") were ground down to next to nothing, the positive ones, do to constant cranking. was going to get a starter from junk yard for 20 befor i knew what the problem was. did some calling around and found brand new brushes for $20.00. i just got those and installed them and had a good as new starter again. lots of dust to clean out of the housing though. brake fluid and air hose works wonders for that problem. but from best buy on the car would not start without starting fluid if it was at running temp. still yet to solve that one. replaced the cam sensor, crank sensor, plugs, COP's and checked the rest of the sensors. still cant figure this out. anyone have advice let me know what i can check. fuel pump kicks in wen the key turns as well...

Could be a number of things but may want to begin by checking wiring to starter, battery, or even the ignition switch. These components may not turn your engine light on.

After trying to read this a couple times to get the gist, I would definitely have the battery tested for it's cold-cranking amps. Regular voltage and power can register normal, but the cold-cranking amps are what matter when starting the car. Also, if there is any problem with your alternator, it can be draining your battery of the juice it needs. After testing the alternator, check for any belts that may be too tight, causing the starter to have to work harder than it should when cranking over to start the car.

I had the same problem with my Blazer last winter. I had the fuel injectors replaced and now it starts fine. If you haven't had them changed in a while that is probably your problem.

what do you mean by wont start?? engine cranks but wont run? engine wont crank? Is the anti-theft light flashing? is the car in park? did you put it in Neutral and try to crank it?

have u loked into the starter

My car was having the problem I had my ingnition switch change, stater and a new battery and now it's fine.