Cold Engine Temp Options

[Blurr05]

I few months ago I blew a rod through my 7AFE motor and today I finally finished putting a new one in. The only thing is when I drive it the engine temp drops and the cheek engine light pops on. When I stop the engine temp come back up. I did not have this problem with the old motor. Did I do somthing wrong instailing the motor, or is this a new problem. I did store my car two months before doing the engine drop. Any thoughs why it is doing this????

[presure2]

check your codes, it will be stored in the ecu.
sounds like your thermostat is bad.
but IDk why your getting a CEL.
if you dont know how to check for codes go here:
http://www.6gc.net/forums/index.php?act=ST...=55403&st=0