Question about Kia Sephia
Posted by Anonymous on
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Posted on Jan 02, 2017
The biggest issue will be with the ECM. If programming changes were made between the year models to accommodate newer sensors then you will have problems with the ECM and TCM control units. If you transfer just the motor over and leave the transmission as a standard you will reduce the probability of having these problem. The motors should be essentially the same. There maybe some changes on sensor locations and in some cases you may need to make some extenders to accommodate the different locations. The second issue with the newer motor going in to the older vehicle is the ECM being able to control the Crank Position Sensor readings and maintaining the timing as this is key to the motor running well. Again, you may be able to use the ECM from the 2001 to avoid this problem but this assumes that all other major equipment is the same. Where I am seeing the largest issue is with the Transmission. In older vehicle changes from Standard to Automatic is not an issue and vice versa but in the ECM controlled world it becomes a problem. This is sometimes resolved with a simple programming upgrade at other times the ECM is designed to handle either with no further action required. This is Vehicle make and model specific though. One manufacturer may not require any further action where another may and there is no listing of exceptions.
Posted on Nov 01, 2010
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