fans not working :cry:

[ws6nighthawk]

ok i removed my battery, condenser, radiator and fans. i put them all back in except for the condenser and i have a 160* radiator is holding fluid, has a small steady stream coming from the bottom left of the rad near the petcock and the temp on the car going up while driving, but the fans doesnt come on at all. what could it be? any help appreciated

[Blubird]

start with checking your grounds and relays

[ws6nighthawk]

start with checking your grounds and relays

where are the grounds located for the fan? and which relay, i miss placed my fuse box cover while putting the car back together.

[Tarheel'Z']

bleed the air? what temp are you expecting them to come on?
and dont mean to point out the obvious but ya might wanna get a radiator

[ws6nighthawk]

its a 160* so it usually comes on at around 170*-175* or so. well that when i notice the fans coming on.

[Tarheel'Z']

i guess your saying you have a 160* thermostat and the pcm has been tuned to turn the fans on at 170-175*?

did you get all the air out of the system when you put it back together?

[popo8]

SHouldnt he be able to test the fans by over riding them with the AC....? For some reason I thought both fans turn on with AC on high.....

[ws6nighthawk]

i guess your saying you have a 160* thermostat and the pcm has been tuned to turn the fans on at 170-175*?

did you get all the air out of the system when you put it back together? nope i havent did that, will that cause the system to overheat also?


SHouldnt he be able to test the fans by over riding them with the AC....? For some reason I thought both fans turn on with AC on high.....
and i didnt even think of this PoPo, ill give this a try too.


thanks you all.

[Blubird]

SHouldnt he be able to test the fans by over riding them with the AC....? For some reason I thought both fans turn on with AC on high.....

i believe you are correct,its either both or the high fan but either way its a good way to go

[_93_BLK_LT1_]

i have a similar problem with my fans. for some reason they wont turn on, i just have it rigged so they are on all the time

[Tarheel'Z']

nope i havent did that, will that cause the system to overheat .

which part? if you havent had it tuned for fans to come on at 170 then they wont come on until about 220-225 i think,,and if its no to the air then yes it certainly will cause it to over heat,there are bleeders to let air out,,but honestly im not sure why your doing all this with a leaking radiator?

[ws6nighthawk]

i have a similar problem with my fans. for some reason they wont turn on, i just have it rigged so they are on all the time
let me know how you did this i may need it.lol

which part? if you havent had it tuned for fans to come on at 170 then they wont come on until about 220-225 i think,,and if its no to the air then yes it certainly will cause it to over heat,there are bleeders to let air out,,but honestly im not sure why your doing all this with a leaking radiator?

tarheel the car is tuned for the therm, but i though i repaired the rad but that was my only time testing the repair under pressure so i found out it was leaking after the drive. i thought even with the leak it still should have kept it a bit cooler than it had. it wasnt pouring out or anything, just noticed the fans werent on also thats all. but your right im getting another rad next week. while i have the bleeder screws open a little should i let it run while im adding coolant with the new rad?

[_93_BLK_LT1_]

just find which fuse runs the fan speeds and ground a wire to the correct fuse and it'll be on everytime you turn your battery on i did that and no over heating problems for me.

[popo8]

I have an over ride switch on mine... high low, and the automatic setting is the OFF position....

[Stephan Smith]

I wouldnt recommend it. Most factory cams had life in the .390" to .410" range and chevy just make the springs strong enough to handle that with out coil bind.. You have alittle play as stock max lift on the springs is around .450" but thats on brand new springs.

As they age, they weaken.

Spend the $30 on new springs and be alot better off in the long run. Check out competition products for valve train parts. They have some great deals on 1.25" (stock size) springs.

[Tarheel'Z']

^what are you talking about?

[nascarnate326]

I have an SLP fan switch. Plug and play. I spent hours and hours trying to figure out why mine didnt come on. Bought the switch and just got in the habbit of watching the temp gauge. No issues yet.

[IronOutlaw]

Mine were wired to run all the time when I bought the car. The alternator couldnt keep up with them causing me, and the previous owner, to think the car was having starter problems (it wasnt engaging all the way and sounded like a bad flywheel). I tried to get the fans to work like stock but never could figure it out. I just completley rewired them to a switch and watch the temperature. Now since they arent running all the time my starter has yet to act funny leading me to believe my alternator couldnt charge enough for them.

But, on my old formula I had them wired to run off the ignition switch and they never caused any problems. I think I may have a weak alternator.