anyone know where, under the hood, the fan relay is for an 86 TA? my fan is not coming on. i checked the fuses under the steering wheel, and they all looked alright. any other quick ideas besides the relay?

thanks,

jeremy

 

one should be near the radiator on the passenger side. the other should be about a foot away on the passenger side fender... they might be different on urs. but that is where they are at on my 88

 

mine where located on the drivers side firewall, throughout the years those dag gone relays grow feet and move around under that hood!


finding that relay is important because there you can jumper certain wires and see if the fan motor works! if it does something else is broke in the circuit..

 

On passenger side next to radiator by the air filter canister. follow the wires from the fan to find it. Use a jumper wire to test it. I have a single fan and it sometimes seems like it isn't running, but the motor needs to be really hot before it kicks in. On at 229 and off at 219.

 

blue ta,

i did find that thing. is that one of the relays? there were 3 wires going into the male harness (a ground was hooked up but not through the harness). I pulled it out, and found all sorts of crap inside the female part of the harness. Seemed like melted plastic or something. I ran a temporary jumper wire from the hot fan lead of the male harness to the battery. The fan did come on. The car is almost out of gas (still just sitting in the garage), so I haven't had a chance to just let it run and heat up to see if cleaning the harness helped. Any ideas where to look next if it still won't kick on?

Thanks for the info so far,

Jeremy

 

Car is at shop this week since I am laid up from surgery. If I remember right, I also had three wires, but all were in the relay. I "think" 2 were orange and one green. The green one was the one I grounded to make the fan kick in. Sounds like someone did a little creative wiring at one time since your ground is seperate. I am not electrical expert, maybe you should search the posts and see if there is a diagram for your year. I know there are some out there for dual fan setups, but I would imagine you have a single like I do. If you need gas, just wirethe fan to run all the time and take off for the station. Too much cooling is better than not enough. Sorry I can't help further. GOOD LUCK ! !

 

Check the current post from mckenzie titled "How to turn on single fan at lower temperature". It has a diagram of a single fan system attached. It mentions that there is a relationship with the a/c compressor pressure. That is also true per my GM mechanic. Fan will turn on if engine reaches trip temperature, or if head pressure at a/c reaches trip pressure.

 

question: how do you use a "jumper" to test if a fan relay is still good? (either the one near the intake, or the one on the firewall)

thanks,
bp

 

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