SES Light + High Fans on Full Time = ???
SES Light + High Fans on Full Time = ??? Well I was out driving tonight and the SES light came on. I wasn't sure what it was, but I wasn't too worried either. I figure I just pissed off an O2 sensor with the open cutouts. Anyways, the light didn't go off even after about 5 cycles, and I also noticed that my high fans are on all the time. Even after coasting downhill at 55mph for a couple minutes, they were still on at the bottom of the hill. If I recall, they have never been on at the bottom of this hill. I also had just put in some Lucas fuel system cleaner the drive before. So it had about 30 miles on the tank before the SES light came on. I dont know if this would do anything.
Has anyone had these same problems, and what did you conclude? Thanks!
Has anyone had these same problems, and what did you conclude? Thanks!
Teching In
Joined: Oct 2003
Posts: 49
Likes: 0
From: Wichita, Kansas
I think on LT1 cars a bad EGR code would cause the fans to continuously run on high. Not sure about LS1's though.
Just take it to a parts store (Advance, Auto Zone etc.) that will hook a code reader up to it for free and take it from there.
Just take it to a parts store (Advance, Auto Zone etc.) that will hook a code reader up to it for free and take it from there.
