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Old 11-26-2003, 12:06   #1 (permalink)
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temperature problem

i have an ea s pack 5 speed and i have a problem with the temperature gauge going up and down when then car is warmed up. I have replaced the thermostat 2 times, i have a new radiaitor, i have flushed the cooling system out 3 times and replaced the temperature sender. Does anyone know what else could be causing the problem? It gets up to where the needle is ment to sit but shortly after that it will rise up past the m letter and then it goes back down where its ment to sit then keeps repeating this. Any suggestions would be gewd thanx.
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Old 11-26-2003, 12:53   #2 (permalink)
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Re: temperature problem

What thermostat did you put in? has it a hole in the plate or is it solid?
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Old 11-26-2003, 13:53   #3 (permalink)
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Re: temperature problem

Yes a 3mm hole to allow water to get around the thermostat to even temps out will solve the problem, if it has a hole, then umm no idea ;0)

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Old 11-26-2003, 23:34   #4 (permalink)
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Re: temperature problem

its a tridon one, and been replaced twice, i havent drilled any holes in and it doesnt have any its solid, ive heard of that trick i asked the radiator specialist about that he said it wont fix it and his advice was to replace the thermostat again but this 3mm hole sounds like a good idea,

what do yo think is happening, the thermostat keeps shutting an opening all the time making the temperature go up and down. I didnt need to drill any holes in the thermostat i put in the other falcon i have, its the same thing (ea spack) but its an auto.
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Old 11-27-2003, 02:03   #5 (permalink)
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Re: temperature problem

It should do that until the temperature stabilises. Does it do it even when the car is at op. temperature?

My gauge goes up and down for a while until it warms up, nothing to worry about.

If it does it even when warmed up, I would consider a head gasket problem.
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Old 11-27-2003, 03:02   #6 (permalink)
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Re: temperature problem

Well it gets hot and opens, then a rush of cold water comes through and hit shuts, and so on, so the hole helps make the water a little more predictable around it, to stop the bounce.

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Old 11-27-2003, 11:43   #7 (permalink)
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Re: temperature problem

yeah i thought it was a blown head but ive done a tk test and a compression test all come out ok, yes it does it when it is at operating temperature... its the first car thats done it to me
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Old 11-27-2003, 23:04   #8 (permalink)
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Re: temperature problem

Might have one of those new-age sensitive gauges.
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Old 11-28-2003, 04:19   #9 (permalink)
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Re: temperature problem

Have you the correct dual acting thermostat fitted?
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Old 11-28-2003, 04:29   #10 (permalink)
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Re: temperature problem



The one on the RIGHT is dual acting it has the poppet valve on the bottom that closes the bypass system when the thermostat opens so the coolant doesn't bypass the radiator.
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