7.3 roll away thump - Ford Powerstroke Diesel Forum
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post #1 of 25 Old 03-17-2008, 04:03 PM Thread Starter
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7.3 roll away thump

What causes the roll away thump on the 7.3's?
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post #2 of 25 Old 03-17-2008, 04:30 PM
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I dont know what you meen buy roll away thump,but the cab heater will make that noise
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post #3 of 25 Old 03-17-2008, 04:34 PM Thread Starter
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Originally Posted by jimmy View Post
I dont know what you meen buy roll away thump,but the cab heater will make that noise
The thump happens after it's put in R or D. And only happens once every start up.
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post #4 of 25 Old 03-17-2008, 04:36 PM
Stupidity pisses me off

 
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I don't know. Mine has done it for YEARS. Most of the time while it's in park, right after I start it up.....Come to think of it, it hasn't done it since I've had my tranny rebuilt....I'll let you know if it does.

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You are not right man, but i still think your funny as hell!
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post #5 of 25 Old 03-17-2008, 04:45 PM
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If its doing it right after start up and it sounds like its coming from the floor area Its the heater blend door opening up

Email: Dave@powerstroke.org
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post #6 of 25 Old 03-17-2008, 04:47 PM Thread Starter
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Originally Posted by Dave View Post
If its doing it right after start up and it sounds like its coming from the floor area Its the heater blend door opening up
That sounds like it. What is the heater blend door?
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post #7 of 25 Old 03-17-2008, 04:49 PM
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Its what controls which vents the heat comes out of. It switches it from defrost, to floor or dash vents

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
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http://www.bulletproofdiesel.com/default.asp
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post #8 of 25 Old 03-17-2008, 05:07 PM
Stupidity pisses me off

 
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Quote:
Originally Posted by Dave View Post
If its doing it right after start up and it sounds like its coming from the floor area Its the heater blend door opening up
Yep, that's what it sounds like. Man I'm gonna have to dynomat my interior to quiet that thing down!

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post #9 of 25 Old 03-17-2008, 05:25 PM
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So thats what that noise is. My girl friend has asked about it a couple times. Sometimes its a few seconds after its started. I thought i was the starter.

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post #10 of 25 Old 03-17-2008, 07:31 PM
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wow, how loud is it on yall trucks? mine is a rather harsh thud and its loud. kind of shakes the floor.

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