2.5 to 4.0 throttle body - JeepForum.com

 
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post #1 of 3 Old 02-08-2014, 06:33 PM Thread Starter
mipstien
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1997 TJ Wrangler 
 
Join Date: Jul 2012
Location: Walland/Knoxville
Posts: 73
2.5 to 4.0 throttle body

I picked up a 4.0 throttle body for my 2.5 jeep today and when compared the 2 the thing i noticed was that the 4.0 had a little tab on it that kept it from bolting right now.

my questions I have are
1. does the idle air valve need to be changed out .
2. if the idle air valve doesn't need to be changed are the idle air base pieces swapable.
3. is the tps the same or does it need to be changed as well.
4. anything else i need to know about them fitting/working

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post #2 of 3 Old 02-08-2014, 08:45 PM
ddferdt
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1991 YJ Wrangler 
 
Join Date: May 2013
Posts: 78
Swap the 2.5 sensors to the 4.0 body. And make sure you have a gasket and some rtv silicone on hand, otherwise she'll idle really high. Other than that it's pretty straight forward
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post #3 of 3 Old 02-09-2014, 08:27 AM Thread Starter
mipstien
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1997 TJ Wrangler 
 
Join Date: Jul 2012
Location: Walland/Knoxville
Posts: 73
Sweet thanks!
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