Coolant Dumping From Reservoir.

[jeepmarine312]

i replaced the bottle and it runs way better, no more coolant dump. well bottle and cap, found a good one at the JY, great condition.

 

 

 

it only overheated after i added the thermostat. before that i had no problems whatsoever. drove to hilton head, SC and back from Grovetown, GA. and she went fine the whole time.

 

Modern automobiles NEED a thermostat to run properly. Many people simply don't understand that the purpose of the thermostat is to keep the temperature UP, not down. A properly-functioning radiator and cooling system are capable of keeping the temperature well below the temperature needed for optimum combustion -- in fact, often below the minimum temperature for the electronics to switch over to to closed loop operation, meaning the system is reading and reacting to all sensor inputs. For the Renix-vintage Jeeps, that switch-over takes place at somewhere between 170 and 180 degrees F (I used to know more exactly, but I haven't thought about it for a long time). Removing the thermostat could have you running in open loop mode all the time. The vehicle will run ... but it will be always running on a pre-mapped air/fuel curve that's far richer than optimum for an engine at normal operating temperature, and the fuel mileage will suck.

 

Removing the thermostat is NOT a fix -- it's a temporary bandaid that just masks the symptoms of an underlying problem.

 

my fuel milage is amazing... like for real, its better then my buddys 4 cyl ranger...
 

[cruiser54]

Imagine that.... Get the Napa cap just as a precaution when you get a chance.

[jeepmarine312]

ill try and do that soon, but as for now I'm just happy to have a running vehicle again.