Question about 2003 Ford Mustang

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I got stuck in a traffic jam last night for about an hour. After that my car began to leak coolant out of the return resevoir from the cap. The temp gauge still reads normal but after driving for a bit today it did the same thing what should i check first. Its a 2003 Ford Mustang Cobra (supercharged).

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The cooling system is pressurising and then pushing coolant out of the reservoir, It could a few things, first, does the electric fan on the radiator work, if not then it could be a faulty fan motor or temperature switch. It could be the cylinder head gasket, start the car from cold, remove the radiator cap and see if it starts to push coolant out, if so , then its the gasket. Either way , i suggest you take the car to a mechanic to check.

Posted on Feb 04, 2010

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Check and make sure your top radiator hose is hot when engine is warmed up, is it hard, can you squeeze it ? , we are looking to see if you have a head gasket leak, if so your engine will pump air into the cooling system, and over pressurize it, also check your radiator cap, or replace ot with one that has the same pressure.

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