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Old 12-11-2019, 10:53 PM #1
BryanS BryanS is offline
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3VZ swap in '88 Gen1

I just purchased an '88 Gen1 that already has a 3.0 3VZ engine installed in it from a '95. The PO said it never ran well after the swap due to electrical problems so he messed with the engine harness and now it's looks like spaghetti under the hood. I did notice that the engine harness and ECU are still the original ('88). I am planning to replace the engine harness and ECU with ones from a '95 but wanted to know if I can reuse the original '88 main cabin harness. Any help or guidance would be greatly appreciated. Thanks.
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Old 12-12-2019, 10:07 AM #2
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The 88 and 95 use different plugs for things. Depending on how it got spliced in I see where you may have issues. I would

Fuel injectors, knock sensor, and alternator all come to mind for having different plugs from 88 to 95. I think mid 92 was the switch over? I would check that you dont have 88 style injector in the 95 motor before you buy a 95 harness and have to change out plugs.
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Old 12-27-2019, 10:56 AM #3
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Quote:
Originally Posted by Hyde802 View Post
The 88 and 95 use different plugs for things. Depending on how it got spliced in I see where you may have issues. I would

Fuel injectors, knock sensor, and alternator all come to mind for having different plugs from 88 to 95. I think mid 92 was the switch over? I would check that you dont have 88 style injector in the 95 motor before you buy a 95 harness and have to change out plugs.
You were spot on with everything. I purchased a '95 harness and everything was different so I ended up purchasing another '88 harness in perfect condition. I then had to swap out the fuel injectors, the knock sensor and the alternator to '88 components. I still have to swap out the oil pressure sending unit for an '88 but I think that's it. I'm hoping to turn the key in another week or two.
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Old 12-27-2019, 05:00 PM #4
ALANTYRA ALANTYRA is offline
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riginal ('88). I am planning to replace the engine harness and ECU with ones from a '95 but wanted to know if I can reuse the original '88 main cabin harness. auto clicker word unscrambler jumble solver Any help or guidance would be greatly appreciated. Thanks.

Last edited by ALANTYRA; 12-28-2019 at 05:49 PM.
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Old 12-30-2019, 01:01 PM #5
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Quote:
Originally Posted by BryanS View Post
You were spot on with everything.
Once and a while I get one right. haha.

Quote:
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I still have to swap out the oil pressure sending unit for an '88 but I think that's it.
There are two types of oil sending units. One for the actual gauge on an sr5 truck, or one for just a dummy light like on base model trucks. Having the correct one is essential, or it could fry something IIRC.
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Old 01-27-2020, 10:52 PM #6
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Wink

I purchased a '95 harness and everything was different so I ended up purchasing another '88 harness in perfect condition. Auto Clicker,
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Roblox Music Codes I then had to swap out the fuel injectors, the knock sensor and the You were spot on everything with.
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