Re: 160 stat |
Subject: Re: 160 stat by bogus on 2011/9/2 4:40:46 All C4's from 1986 on used the ECM to control fans... Initially, it was just the one fan, or if you had the HD cooling, the pusher fan in front of the rad. Later on, the LT1 got 2 fans side by side, and they had their own programming... and it changed over time. In general, the fans come on at 228, turn off at 215. It requires a reprogram to bring them on sooner and shut them off later. Observationally, a 215 on and 200 off is a great setting. As for the t-stat... CentralCoaster put forth a great theory that the t-stat isn't, but it is a heat valve. The various metals inside the engine need to meet a certain temperature... and without the stat being right, they won't. And premature wear can occur. |