97 Aerostar won't start when cold

My 97 Aerostar 3.0L has developed a wierd problem. When it is cold (below -10 degC) it will not start. When I turn the key on, I hear the fuel pump relay click but do not hear the fuel pump. Also the light for the
overdrive displays off. At first I thought the gas line was frozen but that isn't the problem. If I plug the block heater in for a couple of hours, it will start right up. Also the off light for the overdrive is not on and of course I hear the fuel pump when the key is first turned on.
Any ideas what might be causing this? It runs great after it starts.
Thanks in advance
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Now the thing won't start even with plugging it in. On other thing I notice is the check engine light does not come on when the key is first turned on and when a code reader is attached no codes are displayed.
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Does the engine even turn over?
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Yes the engine turns over no problem
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I had a similar problem with intermintent failure with starting. what i found was a little electrical connector (black 90 degree) under the hood on the driver side wall close to the windsheild was slightly rusted. I simply sanded off the rust,put a little WD40 and slightly crimped it to prevent it from vibrating loose. Since then my aerostar has started every time in all weather. I wish i could find another new 97, would buy it instantly! Hope this works for you..
ALD
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Found the problem Was the Air Intake Temperature Sensor. Seems to be ok now after changing that. I have to agree witn you Dale. It has been excellent and I would not hesitate on purchasing another
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