I know my jimmy has a slow leak of engine coolant somewhere and normally I am very diligent about adding more every month and a half to 2 months but I forgot, when coming home from work I watched the engine temperature rise I tried turning up the heat all the way but no hot air came out the vents, needless to say the temperature continued to rise but luckily never reached red before I got home. There was a hissing sound coming from the car when I got out (i'm assuming pressure release from the radiator cap). I live alone (and in michigan roughly 5 degrees out right now) so Im afraid to put straight water in to last me just long enough to go get more coolant. is my concern warranted or will i be ok for the short trip by adding water (even though there is a possibility of freezing). additionally what could be the underlying cause, (I am assuming a small crack in the radiator).
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1997 Gmc Jimmy over-heating?
- Thread starter babbs
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epiphaknee
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I assume you still have a lot of coolant in your system because you did not overheat. If you remove the rad cap can you see coolant? If so, just drive to the autoparts store, if is close. Keep the heater or defrost on. Kill the engine at stop lights. It's five degrees out! If you start to overheat kill the engine and pop the hood. Why do I have a coolant leak? The rad could have a leak, rad cap leaking, waterpump or the heater core. You can normally smell a heater core leak on the passenger side carpeting. Also hoses like to leak in cold weather, rad and heater. After you add your premixed coolant have a look around. Where do the spots show up in the snow in relation to the car. Pressure testing the system is how to dx the problem.