Overheating issue due to no fans running

2008 HONDA CIVIC HYBRID
160,000 MILES • 1.3L • 4 CYL • 2WD • AUTOMATIC
Advertisement
Avatar
MAEMOND
  • MEMBER
  • 54 POSTS
So, I changed out the electric pump and relay. It seemed to make a difference. Temperature is more regular. However, after driving for a while, say 45 minutes, I start getting steam and can hear the coolant boiling into the overflow tank.
Oct 3, 2020 at 11:21 AM
Avatar
MAEMOND
  • MEMBER
  • 54 POSTS
Another thing to note, the coolant temperature on the dash still reads very low. I think it has to do with the coolant not circulating. That bottom hose isn’t getting very hot at all.
Oct 3, 2020 at 12:22 PM
Advertisement
Avatar
KASEKENNY
  • CERTIFIED EXPERT
  • 18,907 POSTS
Yeah. Boiling in the overflow tank and temperature sensor not seeing the overheat is a restriction. Clearly we are missing the restriction somewhere. Have you pulled the hoses off the overflow tank and made sure there was no obstructions anywhere in the hoses?
Oct 4, 2020 at 5:51 PM