strange noises - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 1 (permalink) Old 06-27-2015, 07:12 PM Thread Starter
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Join Date: Jun 2015
Posts: 1
strange noises

I have a early 99 f250 super duty 7.3 with the auto trans and I am getting some strange noises from the motor or the transmission. This happens when I am doing freeway speeds from 65 to 80 miles per hour. It sounds like the engine speed is going up and down slightly in about 4 or 5 second intervals but I cant see a change in the tac.

I have had some recent transmission problems about 5000 miles ago, the front seal on the input shaft went bad and pissed out a few quarts and trans temp got a little hot. I have put in the upgraded seal and upgraded the trans cooler to the 6.0 one and flushed the trans and replaced the filter.
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