overheating and fan on constant, help
03-26-2003, 08:41 PM
#1
1.0 BAR
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Join Date: Jan 2003
Posts: 254
overheating and fan on constant, help
ok, i have a 90 civic hatch 1.5
The radiator fan is on constant, never turns off when engines on. Im also overheating after some driving. I have new hoses/radiator cap/thermostat going in tomorrow, radiator is new. Any suggestions on what is causing the fan to stay on constant? anything else i should look for to stop the overheating? thanks
The radiator fan is on constant, never turns off when engines on. Im also overheating after some driving. I have new hoses/radiator cap/thermostat going in tomorrow, radiator is new. Any suggestions on what is causing the fan to stay on constant? anything else i should look for to stop the overheating? thanks
03-26-2003, 11:47 PM
#6
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Join Date: Dec 2002
Location: Nashville
Posts: 807
Re:overheating and fan on constant, help
I also have the same problem, just never got around to fixing it. I don't think it would be a partly blown head gasket in MY case. I've had the rex for 2.5 years and the fan is always on... until I melted it today with the exhaust from my turbo ...
03-27-2003, 01:02 AM
#7
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Join Date: Jan 2003
Posts: 254
Re:overheating and fan on constant, help
yeah if the thermostat etc. doesnt fix the overheating, ill change the waterpump. Jeff, i havent changed the temp switch, how can i check the head gasket? I have a complete gasket set, i guess i could slap on my a6 head, swap it while i change the head gasket, waterpump and timing belt...i would just swap the whole motor but have no access to a lift...opinions? thanks
03-27-2003, 07:10 AM
#8
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Join Date: Feb 2003
Posts: 9,089
Re:overheating and fan on constant, help
do a leak down test to check for a blown head gasket. Easy ways to check for water pump is broken is to touch the hoses going to and from the rad. If they are hot then the thermostat and pump are good cuz you have coolant flow.
03-28-2003, 02:49 PM
#9
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Join Date: Dec 2002
Posts: 641
Re:overheating and fan on constant, help
Thats not entirely true, you could have coolent flow going through the top radiator hose(meaning the t stat is working) but your water pump could still be faulty. Dont wait on this one, my water pump leaked for a while but i didnt know it until i was racing one day with a turbo rx7 and a turbo hb. I noticed i had a problem when my temperare gauge was way past hot, opened the hood, absolutely no fluid in the radiator... a week later i was driving like 65 not even under boost, and one of my rods just snaped in half. That sucked. Dontwait around to fix this problem.
