hey guys my car started overheating and the fan was not coming on. since then we have replaced the fan but it still does not come on so i need to know where the fan sensor is so i can replace that and find out if that is the problem thanks. p.s. the thermostat is fine and so is everything else

 

the switch itself is in the back of the block near the oil filter... I've never heard of one going bad though. Its has 2 prongs and when the temp gets too high it will complete a curcit and the switch comes on. Your letting the car run/idle long enough for the fan to come on right?? I'm willing to be you may have some other electrical problems. 1st make sure the fan works....Run a ground and a pos wire then work your way back

 

yeah i'm letting the car get warmed up enough for the fan to come one but it doesn't we replaced the fan and made sure it works with a power and ground and it worked so we don't know what to thing and as i said the thremostat is nearly new and everything else is fine and is working

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zCivic &raquo;</TD></TR><TR><TD CLASS="quote">the switch itself is in the back of the block near the oil filter... I've never heard of one going bad though. Its has 2 prongs and when the temp gets too high it will complete a curcit and the switch comes on.</TD></TR></TABLE>

Coolant temperature switches can go bad. mine did. the easy way to test it is to turn your ignition to on (car not running) and pull both connectors from the CTS and put a jumper inbetween them. if your fan switches on then you KNOW that your fan, cooling fan relay, and cooling fan fuse are working and that your CTS has simply taken a dump on you.

 

There are also relays to turn on the fans, check those also.

 

I have had one go bad too..

 

where are the relays for the fan

 

if you do the CTS test i suggested above and the fan DOES turn on, then your relays are just fine. try it first.

 

just wire it to a switch inside your car itll look cool and you can control your engine's temperature