1993 Ford Aerostar temp guage moves li

1993 FORD AEROSTAR
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AEROSTAR4
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Engine Cooling problem
1993 Ford Aerostar 6 cyl Two Wheel Drive Automatic

temperature goes up quickly midway stops for three seconds then goes down quickly, half minute to start moving up again.
off the gas for 3 seconds when see temp moving upwards it will slow moving and go back down.
not losing uch water until it starts steam blowin out of coolant
just replaced a month ago so smoked or hammered to death
i was 300 miles from home and was temp problem for about 9oo the bad stuff out radiator .
but on the way home going a lot putting ceramic type block in there 200 miles unstable.

not sure what
Mar 11, 2009 at 11:45 AM
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2CARPRO JACK
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Do you have straight water in the cooling system? Shoul dbe a mix of anti-freeze/coolant and water.The cooling system is full when the gauge acts erratic? need to verify what the temp is doing when thegauge is acting up, it could be a sender or gauge problem to move so quickly.Insatling a manual gauge would be the best way to verify what it is doing. Also might want to have the cooling system chemical tested for exhaust gasses (blown head gasket)
Mar 12, 2009 at 7:55 AM
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AEROSTAR4
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hasn't got coolant a leak which is under control (block sealer is not). the radiator is will flush out.the or is cracked
it could be leaking coolant from inside the front timing chain cover, air pressure cooling didn't much leak ombustion chamber head gaskets o
Mar 12, 2009 at 11:59 AM
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2CARPRO JACK
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You wont hear air in thechambers like that.Did ytou have th eheads checked for cracks? surfaced? You need to have coolant in the system, block sealer is a patch, not a fix.
Mar 12, 2009 at 12:18 PM