hi there guys
so my wife complained that the heater was not working in out truck (02 disco)
i took a look at it and sure enough the temp was of engine was at operating heat but no heat in the car only cold air, come to find out that the coolant was low due to a bad water pump witch i just found out now. After i added the missing coolant the heat came back on, i have a pump on order so that will get replaced. My question to your nobel men is: why did we not get a warning light about the low coolant? I added about a gallon of fluid in there so i think that there should have been a light saying its low.
PS i dont think it over heated in advance thanks for your concerns and all your responses

 

There is no level warning switch on your truck. Sounds like you dodged a bullet. You need to get in the habit of looking under the good and checking the fluid levels every week.

 

about two years ago i replaced the head gaskets just before that the light would come on when it would start to over heat....
is this a fact that there is no warning light for low coolant or am i just out of luck on this one
thnaks again

 

There is no low coolant light.

You do need to check your coolant level more frequently. I check mine almost every morning.

 

my concern is not the coolant light, but where did the gallon of coolant go? Because if it missing you have a leak some where, thus it very well could go missing again

 

Check your oil level... See if there is coolant in the oil...

 

Thank you all for the responses
I live in Seattle so I hope that I did not see the leak because of all the rain that we have been having
Will check the oil tonight, got me worried big time now

 

The next step is to fill and bleed the coolant system, then rent a coolant system pressure tester from Advanced Auto and pressurize the system. Then you take a flashlight to every square inch of the block, radiator, and hoses looking for the leak. Don't forget to get underneath and inspect just as thoroughly.

 

I absolutely can't believe it but I just checked my engine oil and it is very milky coolant in oil
And ideas guys where it may have come in
Thanks

 

Obviously, it could be the head gaskets.

However, it could just as easily be the timing cover gasket, which is occasionally misdiagnosed as bad head gaskets.

I'm spitballing here, here's my thoughts.

I'd still pressure test to start with. Look very closely around the heads and the timing cover for leaks while the system is pressurized.

If you see no leaks, I'd pull the plugs and try to see if one looks steamcleaned. Check the plugs to see if they all look the same. Do a compression test.

If all that looks good, I'd probly do the timing cover gasket just because you did the head gaskets pretty recently.

Good luck!