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3.3L and 3.8L engine swap

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Old Feb 4, 2010 | 02:48 AM
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Default 3.3L and 3.8L engine swap

i have a '99 3.8L Caravan and an '00 3.3L GC. can i swap engines?
thanks,
Wayne
 
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Old Feb 4, 2010 | 10:01 AM
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Yes. But need to switch the flex plate so you torque converter can bolt up. You also need to other parts as well.
 
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Old Feb 6, 2010 | 09:32 AM
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thanks Master, pls clarify your last sentence. i have these two vans intact so i'm assuming i'd have all the parts i'd need?
Wayne
 
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Old Mar 10, 2010 | 02:45 PM
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Default 02 3.3 replaced by 04 3.3

Hi, I'm new to this forum so I hope this is the appropriate place to post this. I had an 04 3.3 installed into my wife's 02 Caravan. They couldn't get it running. When I got it back, I noticed several sensors were unplugged. I have been told that I need to put the old flex-plate on instead of the new one in order for it to run, but I thought I would try to start it with the sensors plugged in. It seems to try to start but acts like it is back-firing, supporting the flex-plate argument. However there is one white connector that I can't find where to plug in. Also, I have an EGR on the 04 that I didn't have on the 02. I have a photo on my iPhone that shows this white connector, but I don't know how to upload it.
On top of all that, the technician at the dealership basically said I was pissing in the wind-that it will never work.
Any advice? Thanks in advance.
 
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Old Mar 10, 2010 | 03:07 PM
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It appears alot of things changed between the '02 and '04 model years. The flex plate is definitly different as is the crank sensor. Looks like you could have went up to '03 with no issue. the EGR valve can be removed and plugged.
 
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Old Mar 10, 2010 | 03:10 PM
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Default 02 3.3 replaced by 04 3.3

Here is the photo of the unknown connector and the EGR
 
Attached Thumbnails 3.3L and 3.8L engine swap-31010iphone-022.jpg  
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Old Mar 10, 2010 | 03:33 PM
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where does it meet up with the harness, it doesn't go to the one going over the engine mount. I have looked on an '03 and '04 and don't see a connector like that.
 
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Old Mar 10, 2010 | 04:39 PM
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I'll have to get back to you with what other connectors are on that part of the harness. It is a two pin connector with pink and blue wires. I looked at wiring diagrams in both Haynes and Chilton manuals and couldn't find it.
 
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Old Mar 10, 2010 | 05:24 PM
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It looks like a connector that used to go to the compressor high pressure switch but your van shouldn't have one.
 
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Old Jun 10, 2010 | 09:21 PM
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Sorry It's been so long since I posted to this thread.
I took the van to a mechanic who swapped out the flex plates. The van still won"t start. When the original installer took the van to the local Dodge dealer for diagnostics the dealer wanted to change the timing components (for another $2200). What would be the difference in the timing components? Camshaft, timing gears, firing order???
 
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