I was driving around for about an hour and a half, pulled over and noticed my hood was warmer than usual: popped my hood and it was running HOT under there! however my temp gauge never goes up past the half way mark.. Fans never went on at all and don't even go on with the AC. In fact, just by looking at them, seems like they haven't turned on for a while now. Where can I start troublshooting?

 

Buy a mugen/spoon thermoswitch. that will make it come on more often.

This is what I did when my car kept running really really hot and the fans didn't come on. I also got the Mugen thermoswitch with it. It runs MUCH better now.

 

I mean.. my fans don't turn on AT ALL even when I turn on the AC. You said, it could be the thermostatic switch? What's more likely.. the thermostat or the switch..?

 

how long did you stand there waiting for the fans to come on?

 

My car was close to running for almost 2 hours and it was over a half an hour stand still without the fans turning on.. Like I said, just inspecting them, seems like they haven't turned on for a while. Any ideas?

 

Do you have a aftermarket header w/o shield? When I had my Mugen header, it crinkled this **** out of the little blue wire that goes to the fans. I wrapped them in high temp tape, and never had any issues, but if left unchecked I could see having that problem.

 

do you ever actually have overheating problems?on my cars,it takes quite some time for the fan to come on-my basically stock EG hatch will sit there and idle for days without the fan coming on or getting overheated.if you hold the revs up a little,it finally generates enought heat to trigger the fan.
my coupe is the same way-you have to run it pretty hard to get it hot enough.
i wouldn't assume you have a problem-try holding the throttle at about 2500-3000 RPMs for a bit and see if it kicks on,or if the car starts to overheat.
if you're still paranoid,you can get a shop manual and find the troubleshooting procedure for the whole fan system.
chris

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR00-1200 &raquo;</TD></TR><TR><TD CLASS="quote"> What's more likely.. the thermostat or the switch..?</TD></TR></TABLE>

The thermostat is a mechanical device w/o any electrical connectors to the fan, and only regulated the temp at which coolant is permitted to flow from the block through the radiator.

The thermoswitch (located in the radiator) is what makes the radiator fan come on at or above a set temperature of the coolant. If the fan doesn't come on at all it's either too cold out (probably not the case in CA), or the electrical circuit with the thermoswitch/fan is bad.

 

Mine did the same thing at the track. I believe mine was due to the fact I had aftermarket fans though (Flex-A-Lite) that were pulling more power than the original factory fans. Check the fuse. If the fuse isn't blown, then check the relay next to it (All of this is in the under hood fuse box). Hope that helps ya somes.

Later,
Roach

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed &raquo;</TD></TR><TR><TD CLASS="quote">

The thermostat is a mechanical device w/o any electrical connectors to the fan, and only regulated the temp at which coolant is permitted to flow from the block through the radiator.

The thermoswitch (located in the radiator) is what makes the radiator fan come on at or above a set temperature of the coolant. If the fan doesn't come on at all it's either too cold out (probably not the case in CA), or the electrical circuit with the thermoswitch/fan is bad.</TD></TR></TABLE>

Electrical circuit witht he thermoswitch/fan is bad.. what type exactly are we looking at here? replacing? work?

 

For starters, test to see if the fan is working by running power to it directly from the battery.