Engine heats up at idle
03-12-2018, 09:22 PM
#1
Teching In
Thread Starter
iTrader: (4)
Join Date: Oct 2007
Location: Danbury Texas
Posts: 45
Likes: 0
Received 0 Likes
on
0 Posts
Engine heats up at idle I have a 454 LSX in my 57 Chevy. Every once in a while Ill notice my coolant temperature runs pretty high at idle. To get it to come down all I have to do is put it in neutral and rev the engine to about 1900 rpm and it immediately drops back to normal. The thermostat is a 160 degree, I'm wandering if it may not be opened enough at idle which is causing a flow issue. Any suggestions would be appreciated.
03-12-2018, 09:43 PM
#2
11 Second Club
iTrader: (3)
I have a 454 LSX in my 57 Chevy. Every once in a while Ill notice my coolant temperature runs pretty high at idle. To get it to come down all I have to do is put it in neutral and rev the engine to about 1900 rpm and it immediately drops back to normal. The thermostat is a 160 degree, I'm wandering if it may not be opened enough at idle which is causing a flow issue. Any suggestions would be appreciated.
03-13-2018, 10:31 PM
#5
I'm really not sure why anyone would want to run a 160* thermostat. They only regulate minimum temperature not maximum, On a modern engine you don't want the temperature to be that low.
I also agree with qweedqwag, The only time I've had that problem was when the water level was low in the radiator or an air trapped in the system. (Air pockets can cause hot spots throwing off temperature sensors)
Are you running an electric fan or belt driven?
03-14-2018, 08:39 PM
#7
Teching In
Thread Starter
iTrader: (4)
Join Date: Oct 2007
Location: Danbury Texas
Posts: 45
Likes: 0
Received 0 Likes
on
0 Posts
You can test the thermostat in a pan of hot water to see how much it's opening.
I'm really not sure why anyone would want to run a 160* thermostat. They only regulate minimum temperature not maximum, On a modern engine you don't want the temperature to be that low.
I also agree with qweedqwag, The only time I've had that problem was when the water level was low in the radiator or an air trapped in the system. (Air pockets can cause hot spots throwing off temperature sensors)
Are you running an electric fan or belt driven?
I'm really not sure why anyone would want to run a 160* thermostat. They only regulate minimum temperature not maximum, On a modern engine you don't want the temperature to be that low.
I also agree with qweedqwag, The only time I've had that problem was when the water level was low in the radiator or an air trapped in the system. (Air pockets can cause hot spots throwing off temperature sensors)
Are you running an electric fan or belt driven?