Okay so I have chased down a bunch of problems on the z that I bought. I have found that the trans wasn't blown rather the rear mount was. I have replaced the water pump, thermostat and radiator cap and the car seems to stay in a reasonable operating range when driving around. However if I hit alot of lights or am sitting the temp skyrockets up to nearly the horrid "RED ZONE".

In any case, I found that the previous owner had issues with overheating and attempted to put in a new switch for the fan...with his other handywork I am thinking that is trashed too.

I bought a higher flow fan and was about to hard wire it in in the stock location and just let the thing run constantly. Do you guys think this would be an adequate fix? I am on the edge of replacing the radiator but don't want to have to spend new radiator money yet if I don't have to.

Oh yea, I did burp the system a few times and know it is okay. Also, this supposedly started happening after he ran it into a ditch and through a fence when it started snowing on his way back to MI from Cali.

PLEASE HELP

 

The stock fans (when they are working correctly) are perfectly adequate to keep the engine cool. Wiring a fan on all the time is a fix for nothing, IMHO and should never be needed.

 

See the previous owner did something to the fans and they have NEVER come on and he even stated that he would be suprised if they did because they hadn't for a while. I am looking to try to find the cheapest fix for my problem. I do however understand your viewpoint and if this car hadnt been so hacked up I would not be taking this measure to try to fix it.

 

Im going through the same thing, and i also hooked up a switch to turn on the fans, I replaced all the coolant sensors so mabe you should try those, but they didnt work for me, so i have not a clue it that is "your" problem. mine maybe a wiring issue

 

^^ Hmm I haven't tried that. I swear I have no idea what the heck is going on with this thing. Has anyone found a true good solution to this problem because it seems like there are TONS of posts with similar issues.

 

Check your fan relay and make sure it is coming on. If I remember correctly, it's in a black fusebox under the hood in the driver side front. If it is coming on and the fans are not, there's an open circuit somewhere between the battery and fans (this can include the relay even though it's on, bad contacts inside). You'll have to sniff out the open circuit with a multimeter (cheap works good). If the fan relay does not come on, either the relay actuator coil is burned out, or the relay is not recieving a turn on signal from the ecm. Probably a dead relay.

And hard wiring a fan in, without a switch, is a no-no. Under normal use the fan relay turns the fans on and off. When the fans are on, they draw current which heats the wires to the fan. When the fans are off no current is drawn and the wires cool down. Hardwiring the fans on constant can cause wire insulation to melt since there is no cool down. Your fan life will suffer too since it's being used all the time.

If you want to wire your fans -
1) Use a switch (high current >20A)
2) Use heave gauge power cable 10 or 12 gauge is good.
3) Most important!!! Put a fuse (30 A is good since the startup magnetizing current will blow anything lower) in line CLOSE to where you make your power connection. This will keep the wiring from burning up if something pinches through the insulation.