slayer592002

hi i am having problems with my fan not turning on so my car will overheat! i have replaced the fallowing i dont know all the names so i have pics this one is just to the right of the thermostat

slayer592002

the plug had to be replaced the wires where pulled out i believe that one is the fan relay

slayer592002

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james.gould150

ive givin up on trin to figure out why mine will not work...fans are good sensors are new but goddamn fans wont kick...i ordered for 35$ from summit the hayden adjustable temp fan switch kit it came in today while i was at work ill install it tomorrow if the weather is ok and ill let you know if and how well it works...ive also read several threads on TGO that stock temps are dangerously high to begin with and is gm trash

slayer592002

ya im tired of this fan i think i replaced everything but that but that one sensor but do let me know how it goes for you

james.gould150

will do...im gonna take pictures if it works so as to help out others who have issues like this...i have a dual fan set up i might try and wire it so only one fan kicks,i know one is just for a/c and my ac is junk and doesnt work anyway...so im gonna keep it to one fan and eventually get the a/c delete kit...if i do it tomorrow ill keep ya updated

slayer592002

any luck ?

james.gould150

had family emergency and terrible weather havent gotten around to it yet im hoping for time to do it this week

slayer592002

ok hope everything will be ok

james.gould150

yea me too...i have it temporarily rigged to a switch inside that i flip on when it gets hot but its no permanant fix and is a pain in the *** but its my DD so i had to do somethin

camaronewbie

Slayer ...

I think your 1st pic is CTS (Coolant Temp Sensor). The CTS has 2 wires, one yellow, one black.

2nd pic is Fan Switch - assuming it was in the head and not in the block. There is another thing, looks almost identical, but in the block - that is your knock sensor.

3rd pic I have no clue.

4th pic is a relay, but I'm not sure which one. I will tell you those connectors need crimped alot better than what they are - I crush the entire connector in the middle about 1/2 inch across. What are the wire colors to that relay (the original colors) - that will tell you which relay it is.

5th pic is your gauge sender for coolant temp - all it does is feed the gauge the reading, has nothing to do with fans.

Not sure any of that helps you - I'm lost on the V6 cars so I'm not 100% sure on the fans operation. But at the relay, you should be able to remove the connector for the relay, and jump one pin to another, and with key on fan should run - if it does, then you know fan motor is good, if not, might try applying 12v+ directly to the connector at the fan motor to see if maybe the motor is bad.

If fan motor runs, then you know there's an issue either with the relay, the fan switch, or the CTS. On a V8 car ... The CTS sends info to the ECM and the ECM turns on the fan based on this info, by sending a ground signal to the relay. The fan switch does the same - it sends a ground to the relay.

There's a ton of wiring diags here if it helps: http://www.austinthirdgen.org/index.php?pid=19

And fan info here: http://www.austinthirdgen.org/index.php?pid=36

Sorry I can't tell you more - like I said I'm no V6 guru. Good Luck!

DUBS

I had the exact same problem with my 86 T/A, I replaced all sensors and relays and even the fan motor and still no luck. Went to Autozone and got one of those adjustable fan thermostat control relays with the probe u stick thru the radiator and now the fan comes on exactly where I have it set at ! A great fix for $30 , wish I would have done that before going thru the trouble of getting to and replacing a couple of those sensors..!

camaronewbie

That's what I run - a seperate fan controller - and I love it! Not sure why anyone scrtews with the OEM wiring when those things are available, and so easy to install.

irockid86

one other thing to check would be the power going to the fan. I had a bad pigtail/ wire harness and had 11.53Volts on the relay side of the harness and 2.5Volts on the fan side! I think the wire connections are overlooked many times. A simple check with a multimeter in a few key areas will help you identify your problems.

james.gould150

slayer...hooked up the kit this afternoon and it works like a charm,no s.e.s lights runs normal and its adjustable right now mine on at 200 off at 180 it was easy took me about an hour and most of that time was spent digging for tools i havent used in forever...good luck i highly reccomend getting the kit its simple and is easily hidden if you map it out first

elpulpo

relays are for fuel pump,coolant fan and a/c compressor control starting from left to right at front of motor