Installed later model cat e model engine in 88 model peterbilt tractor?

engine starts idle only throtte position checks good ecm good have no check engine light to code with what wire number on dash to firewall harness is the check engine light what sensors do i need on engine to make engine rev up|||what is your engine serial number? Its usually on the valve cover base or on the oil cooler. If you cannot get me this information then do you have any idea what year the truck that the engine came out of? I need this in order to know what ecm is on the engine. Look at my profile for email address and maybe i can help you.