My temp gauge is staying way below normal and hardly registering at all.When I shut the engine off and turn the key to the on position without starting the engine the gauge rises but if I start the engine the gauge goes down.Also I am now noticing like marbles rolling around some where in the engine,maybe the passengers side or underneath at cat converter.The top hose is warm but the bottom hose is a lot cooler.Any ideas.Also took it to smog today and passed with no problems.It was the tester guy who said is temp gauge working as it reads your engine is cold.Thanks.

I installed a new thermostat.Sort of fixed the gage problem.Before I could drive my truck on a cool day and would not go near half way on the gauge.Now it goes there after 10 minuets of ideling.Also If I remove the radiator cap from a cold start and after a couple of minuets coolant slow comes out of the radiator.Never did this before.I just took the thermostat back out and put it in a pan of water and boiled it.It did not open till after 200 degrees or just when the water started to boil.I took it to Ford earlier and they checked for air in the coolant and said it was fine.It does not over heat with the new thermostat but it goes to half way on the gauge pretty quickly and stays there and goes no higher.Is this ok and what about the fluid coming out at a cold start from the radiator with the cap off after a few minuets.Any ides.Thanks.

my stayes in the middle.. and its fine

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1999 2 wd4 cyl2.5l5 spd135k
MODS:5% tint all around Night Shades (Extra Dark)Corners Thrid BrakeTails Air silence removed 2006 Mirrors Flowmaster Super 44 (Weld on & Turn down)
35W 5000K Hids