I have a 98 concorde 2.7L..one day after fixing the replacing the radiator fan and filling up the tank with regular, it won't start on the first crank, then it fires up on the second. it will, however, fire if i crank it for aboout 6 seconds on the first.??? any ideas for a quick solve??? thanks

Have the cooling system pressure tested with a special tool and see if the source of the leak is the water pump, also feel under the pump for antifreeze.

This is what your coolant tank looks like.
locate this under your hood,you will see a full mark and low mark do not over fill.hope this helps

Lift the hood. In the upper right hand corner is the overflow fill tank. If you want to put it in fast reach down the right side of the radiator(when it's cool) unscrew the small plastic petcock and drain a gallon or two of antifreeze into clean pan. Replace petcock. Open the cap on tank and add stop leak. Fill back up with antifreeze. Now would be a good time to change it. Go to Napa and buy the original antifreeze the car came with Zerex G5. Mix 50/50 with distilled water.Fill to just above cold line and start engine keep adding mixture till it won't go down any more. Replace cap and watch level for two or three days of driving add mixture after engine is cold

I have the same problem few days ago, and still didn't find any solution. Can any one please help?????7

you need to check to see if the cooling fans are coming on properly.

After the car is cool and has been sitting for a while, remove the radiator cap, have someone start the car, the coolant in the radiator should drop a little, and there should be movement, if there is no movement, let the car run for a while, with some systems it won't cycle enough to notice until the engine warms up. If there is still no movement, you likely have a bad water pump and/or thermostat.
Another method as a "just to be sure", drain the coolant overflow tank, and fill it with clean distilled water. Drive the car for a few days (carefully not to overheat it obviously, if the engine is getting too hot to drive normally don't do this test). If after a few days of driving the fluid in the overflow tank is still clear (water), then there is no circulation in the system.
It's usually best to start by replacing the thermostat, and then re-check. If that doesn't fix the problem it is most likely a water pump, or in very rare cases a plugged radiator or coolant passage.

The fan gets it's signal from the engine temp sensor, located near the
thermostat housing. There are also 2 relays for the fan hi + lo located
on the fan shroud(2.7 eng.) and for the 3.5 eng. in the fuse/relay block
near the radiator expansion tank. Hope this helps.

there are no reset codes, did you bleed the air out of the cooling system? if not do this procedure, if that doeasn't fix it u have a failed air temperasture control blend door motor actuator.
The generic method of bleeding air from the cooling system is to use a floor jack and raise the front of the car as high as poss, then fill the coolant recovery tank full and run the engine until it just starts to overheat, high end of normal zone on gauge, then shut the engine down and run cold water over the radiator core, this will self bleed the system and the coolant will be pulled from the recovery tank, repeat as necessary, never let the recovery tank run dry or more air will be pulled into the cooling systeml ,

the resovoir hold pressure its not uncommon to find them like that .. but before it overheats put your hand on the upper and lower radiator hoses and feel for them to be flowing ... i guess if they are different its a thermostat...not opening after 180 f ...

check to see if radiator fans are running