Engine swap problems

1999 BUICK CENTURY
130,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TREASUREGIANT
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I install a 2005 chevrolet impala engine into my 2000 buick century. The problem I am having is the vehicle wont stay running and it gets hot. My question is when I swap the engine should I also change the engine computer to the impala engine or is it ok to continue using the buick century engine computer or is there another problem i should be looking at. Thanks.
Mar 29, 2016 at 8:39 PM
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HMAC300
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as long as it was a 3.1 or 3.8 which was in the car originally, check all your connections you don't need to change computer but all connection need to be hooked up . you may have a coolant sensor problem or fans not going on as well as an air lock in coolant system
Mar 30, 2016 at 7:22 AM