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Have you even looked at this thread. Big Mike is the go to guy on the 3RZ conversion.http://board.marlincrawler.com/index.php?topic=19275.0
Well, I've read through the 3rz thread
ive got a 97 5 spd 3rz harness and ecu with alot of the sensors for sale, pm me
I just finished my 3rz swap in my '84 using a '99 3rz out of an auto prerunner bolted to the stock G52 5spd. I've put about 1000 miles on it so far with the automatic ECU and it runs perfect. The check engine light is on, and it has the codes for the shift solenoids, but it doesn't seem to affect the way it runs at all. I'll swap to a 5spd ECU whenever I come across one, but for now I'm gonna keep running it with the auto ECU. It has a ton of power and is getting 20mpg with 35"s and 5.29s. Can't complain with that. As far as I know there is no way to trick the CEL from being on with the auto ECU. Will it run with it? Mine does, and I have no codes other than the shift solenoids, and no issues with the way it runs using the auto ECU.
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