AOD Knocking/Tapping 45MPH+ out of O/D - TCCoA Forums
 
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post #1 of 2 (permalink) Old 07-14-2006, 03:19 PM Thread Starter
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AOD Knocking/Tapping 45MPH+ out of O/D

This sound ONLY happands out of Overdrive when I'm going about 45MPH+, I shift it out of O/D when I get up to the mountains obviously because of the hills but it makes this knocking/tapping sound.. the car is absolutly fine when its in O/D. It ONLY does the sound when the throttle is depressed slightly and if you give it more gas like 1/2 an inch down it goes away. Does anyone know maybe what it could be? Thanks!

1991 Cougar LS BlueMax

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post #2 of 2 (permalink) Old 07-14-2006, 05:56 PM
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Join Date: Jul 2003
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Valetrain noise maybe?? I don't know what RPMs a 3.8 turns in 3rd gear, but maybe it's enough to make the rockers noisy??

Jay

These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
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