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Unread 04-21-2009, 09:35 PM   #1
psycopanther
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1999 TJ Wrangler 
 
Join Date: May 2003
Location: TN
Posts: 147
2.5L, YJ to TJ difference?

what all do i need? i know the sensors are different, but are all the sensors different? is it just some of the connectors that make them different? ECU still the same? i got the 99 ECU and engine harness, but no sensors off the stock block. what will i be needing to do to make the YJ 2.5 work in my TJ?

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Unread 04-22-2009, 09:31 AM   #2
Kip03TJ
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2003 TJ Wrangler 
 
Join Date: Mar 2009
Location: Harrisburg PA
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Quote:
Originally Posted by psycopanther View Post
what all do i need? i know the sensors are different, but are all the sensors different? is it just some of the connectors that make them different? ECU still the same? i got the 99 ECU and engine harness, but no sensors off the stock block. what will i be needing to do to make the YJ 2.5 work in my TJ?
What year YJ? The only thing that I've ever heard of is the water pump on one of the years/or models is reverse rotation of all the other 2.5's. But you'll be fine going from a YJ to a TJ. It's the same engine but adds a few more sensors, nothing major changed and I think you'll be able to start it with the 99ECU and harness.
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Unread 04-22-2009, 11:49 AM   #3
psycopanther
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1999 TJ Wrangler 
 
Join Date: May 2003
Location: TN
Posts: 147
sweet, anyone else confirm this? and what other sensors would i need? oh and it is coming from a 95 (hopefully). the transmission is from a 99 also.
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Unread 04-22-2009, 03:35 PM   #4
TomZ
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2004 TJ Wrangler 
 
Join Date: Apr 2007
Location: Raleigh, NC
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If you plan to use it on the street, you might want to check with your state's DMV to see if they will approve this swap. My state won't allow the installation of a motor from a vehicle that is older than the recipient vehicle.
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Unread 04-22-2009, 08:25 PM   #5
psycopanther
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1999 TJ Wrangler 
 
Join Date: May 2003
Location: TN
Posts: 147
we have no smog test or any of that stuff here. at least not yet
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