Question for you all....
I'll do my best to describe whats going on with my '03 5.4l expy
A couple weeks ago I noticed a tiny puddle of coolant under the truck, shortly after that the truck would only throw out heat under a load (while moving). Now the temp gauge spikes to the red line like it going to over heat and then the heat kicks in and the temp gauge returns to normal. I've kept an eye on the bottle to make sure there's enough coolant which I've had to fill a couple times, I presume due to the small leak that started a couple weeks ago. The leak, from what I can tell looks to be coming from the back of the engine compartment close to the firewall and only seems to appear when the truck has sat long enough to cool down usually over night. I also noticed that when I reach my destination that there's a little steam coming from under the hood so the coolant is hitting something hot. I'm concerned about it being a head gasket but am not sure what the symptoms of that would be. Would be awesome if it was a simple thermostat replacement but wouldn't explain the leak
Any insight on this would be much appreciated.
I do have a block heater installed... could coolant be leaking through the freeze plug?
Should I do a heater core flush?
I'll do my best to describe whats going on with my '03 5.4l expy
A couple weeks ago I noticed a tiny puddle of coolant under the truck, shortly after that the truck would only throw out heat under a load (while moving). Now the temp gauge spikes to the red line like it going to over heat and then the heat kicks in and the temp gauge returns to normal. I've kept an eye on the bottle to make sure there's enough coolant which I've had to fill a couple times, I presume due to the small leak that started a couple weeks ago. The leak, from what I can tell looks to be coming from the back of the engine compartment close to the firewall and only seems to appear when the truck has sat long enough to cool down usually over night. I also noticed that when I reach my destination that there's a little steam coming from under the hood so the coolant is hitting something hot. I'm concerned about it being a head gasket but am not sure what the symptoms of that would be. Would be awesome if it was a simple thermostat replacement but wouldn't explain the leak
Any insight on this would be much appreciated.I do have a block heater installed... could coolant be leaking through the freeze plug?
Should I do a heater core flush?
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