2.3l ranger keeps overheating, been through two radiators already.
I have an 2003 2.3l ranger, about six months ago my radiator started leaking, and engine overheated because it had no coolant. I replaced the radiator and put in a new thermostat. two months later it's leaking again and the engine starts overheating again. so i replaced the radiator, then thinking that something had to be wrong for it to go bad, i replaced the pressure cap and the water pump. I thought i had it fixed, until the other day when i noticed coolant leaking again. I've kept a close eye on the temp gauge and it's never gone above normal, unless it's out of coolant. Which happens after i've noticed it leaking. Help!
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Re: 2.3l ranger keeps overheating, been through two...
Hello Ranger Joe, eight months and two radiators is very uncommon. Question, Have you visually confirmed the leak in the radiators or is the leak near the hose connections? Replacing the radiator, cap, water pump, & the thermostat leaves only two others, the hoses and the engine block/heads. Far fitched will be something or somebody poking holes in the radiator.
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The only other thing I can think of is maybe you put in the wrong kind of coolant? Not every type of coolant works in every car. Other than that, try head gasket sealer because if your head gasket is leaking, it can't be a big leak, otherwise you'd have problems right away.
Check you to see that you don't have loose or leaking cooling hoses, a bad radiator cap, a loose radiator drain plug, or a failing water pump.
If all these are OK, put a bottle of BAR's radiator stop in the radiator and run the engine in idle for 15 to 30 minutes. Available at your local auto parts store.
If your leak is not to serious, this should fix the problem. Put a bottle of radiator stop leak in your cooling system and repeat the procedure once every six months, to lubricate the water pump and keep leaks sealed.
your car problem is overheating, some car model like yours is designed to shut-down engine when engine temp. rise so as to avoid frying the engine. your engine overheating problem is attributed by one of these factors:
1. check or refill radiator water if less
2.check radiator cooling fan operation-if damaged pls. change or check the electrical system.
3. damage/ worn water pump-if damage pls. change the water pump.
4. check for any coolant leak somewhere the coolant line-pls. rectify the leak.
5.worn coolant reservoir cap- change if damaged.
6. clogged radiator-if clogged pls. change it.
7. damaged thermostat valve.
You might have a sticking thermostat. If it's sticking shut, it won't open when needed and the engine will overheat. Even though the water in the radiator is not hot then, the water in the block of the engine is boiling.
After that overflow, the cooling system was underfilled, so when the thermostat finally did open, it had plenty of room to refill, which is what you saw when the water got "suddenly sucked in".
My recommendation is to replace the thermostat (and gasket), because as a point of diagnosis, it is a relatively cheap part but can have terribly inconvenient consequences when malfunctioning. If you're handy, get a Haynes or Chilton manual from the auto parts store and do it yourself.
Also, the radiator cap is not good to mess with when the engine is hot. Doing as you did by opening it while overheated upsets the balance between the coolant in the block and radiator. There's a small rubber hose from the top corner of the radiator to a plastic (probably translucent) overflow tank on one side of your engine compartment. Under normal circumstances, you should check the coolant level there, as it exists to keep the system in balance. Note that I said "normal" - which means anytime it hasn't overheated to the point of leaking out of the radiator cap or leaking elsewhere.
1. start the engine and leave the radiator cap open. 2. put a cardboard cover or a rug in the front of you radiator. 3. let it runs 20 minutes or more, see if it is overheated and see the water or coolant in the radiator circulated or not. If not, as soon as you have already changed water pump. thermostate and check the hoses, no leak, I think your radiator was blocked.