Jmiller1 Posted November 17, 2009 Share Posted November 17, 2009 For a while now my heater has stopped working when I come to a stop or if the rpm is low. in the past weeks I have noticed that when i turn on the heater or the engine begins to heat up after driving it for a while the temp gauge will rise and then start to overheat but then it will quickly drop down (like something kicked in). Now, yesterday my car started to overheat and the gauge will not come back down when driving. Water Pump? I changed the T-stat within the last four months so I don't think thats the problem? Link to comment Share on other sites More sharing options...
lmdew Posted November 17, 2009 Share Posted November 17, 2009 Well it would help to know what year model and engine you have. But given what you said, I'd say you are: - Low on Coolant (leak bad Head Gaskets...) - Check the coolant when the engine is cold, is the over flow bottle up to the required level? Pull the cap, is the Radiator Full? - Check the overflow bottle for black oily stuff, a sure sign of a HG leak. - Get you coolant system pressurized - Get you coolant system checked for signs of Exhaust gases, NAPA sells the kit for $70 or so. - If all that checks, it could be the thermostat, water pump or plugged radiator. Has the coolant system been maintained? Link to comment Share on other sites More sharing options...
zyewdall Posted November 18, 2009 Share Posted November 18, 2009 It does sound suspiciously like low coolant... Link to comment Share on other sites More sharing options...
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