Bad Idea. This is not likely to help anything. If it only overheats while parked then you may have a cooling fan issue. If it is a BHG, a DC10 jet engine blowing on it won't cool it down.
Cooling fans always on - good or bad idea?
Hi,
i have a 92 Legend LS 4-door and i wanted to know if anyone has tried this or not. I wanted to wire the cooling fan and condenser fan to stay on whenever the engine in on or the key is in the on position. I don't know if that will drain the battery or if there are any issues with doing that. My car overheats like crazy and unfortunately i do not have the money to buy a new one or fix this one so i'm looking for a quick temporary fix.
Also, if it's ok to do it, how would i got about bypassing the temperature trigger switch at the bottom of the radiator and doing the wiring for it? Thanks!
i have a 92 Legend LS 4-door and i wanted to know if anyone has tried this or not. I wanted to wire the cooling fan and condenser fan to stay on whenever the engine in on or the key is in the on position. I don't know if that will drain the battery or if there are any issues with doing that. My car overheats like crazy and unfortunately i do not have the money to buy a new one or fix this one so i'm looking for a quick temporary fix.
Also, if it's ok to do it, how would i got about bypassing the temperature trigger switch at the bottom of the radiator and doing the wiring for it? Thanks!
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of course a DC-10 engine wont cool it down, because the engine is blowing hot exhaust gases 
i have a 92LS sedan also and my cooling fans would not come on either.i had my car sent to the stealer and they wanted $1800 plus tax to fix the problem. i said ''OH HELL NO''. i wired both my fans direct with a toggle switch on my dash.when i get into and start my car i flip the switch to start the fans and when i turn off the car i flip the switch to turn them off. i have been doing that for about 4 months now and all is ok.
I did it to mine and it brings too many problems, the fan gets damage right now i have dem direct and the fan is damage now i ned to buy a new fan... It seems i have an electrical problem bcuz my fans wont go on eitherphate said:Hi,
i have a 92 Legend LS 4-door and i wanted to know if anyone has tried this or not. I wanted to wire the cooling fan and condenser fan to stay on whenever the engine in on or the key is in the on position. I don't know if that will drain the battery or if there are any issues with doing that. My car overheats like crazy and unfortunately i do not have the money to buy a new one or fix this one so i'm looking for a quick temporary fix.
Also, if it's ok to do it, how would i got about bypassing the temperature trigger switch at the bottom of the radiator and doing the wiring for it? Thanks!
bad relay or sensor switch is usually the cause.
I believe that the sensor which controls the fans are at the bottom of the radiator. The fans aren't concerned with engine coolant temp, that is the thermostat's job. The fans' job is to disipate heat from the radiator when there is no air moving across it. One fan is controlled by the A/C system and comes on when the A/C is on. The power to the fans comes through relays. It is a fairly simple system to understand, troubleshoot and repair. But to do so one needs an understanding of wiring schematics as well as being able to use a simple VOM (voltage-ohm -meter). The first test is to check the sensor on the bottom of the radiator to see if it is working (closing) when hot. This whole thread reminds me of a recently towed ford bronco that broke down on the corner. About 2 days after sitting the owner and a friend asked me for a drill, they wanted to drill out the exhaust pipe because someone told them maybe the cat was backed up. Before letting them do that I walked over and took a quick look. There were wires everywhere that they had been using to turn things on and off. The ignition was bad as there was no spark. Next the guy is changing the coil because someone told him it is the coil. By now the coil pack in the dist is fried because I can see melted plastic all over that area. Two weeks later someone pops all four tires and the truck goes to car heaven as scrap. The moral is, those who cannot afford to maintain a Legend should not buy one.
How do u test the sensor? and where is the realys that might b damage?Merlin the Wrench said:I believe that the sensor which controls the fans are at the bottom of the radiator. The fans aren't concerned with engine coolant temp, that is the thermostat's job. The fans' job is to disipate heat from the radiator when there is no air moving across it. One fan is controlled by the A/C system and comes on when the A/C is on. The power to the fans comes through relays. It is a fairly simple system to understand, troubleshoot and repair. But to do so one needs an understanding of wiring schematics as well as being able to use a simple VOM (voltage-ohm -meter). The first test is to check the sensor on the bottom of the radiator to see if it is working (closing) when hot. This whole thread reminds me of a recently towed ford bronco that broke down on the corner. About 2 days after sitting the owner and a friend asked me for a drill, they wanted to drill out the exhaust pipe because someone told them maybe the cat was backed up. Before letting them do that I walked over and took a quick look. There were wires everywhere that they had been using to turn things on and off. The ignition was bad as there was no spark. Next the guy is changing the coil because someone told him it is the coil. By now the coil pack in the dist is fried because I can see melted plastic all over that area. Two weeks later someone pops all four tires and the truck goes to car heaven as scrap. The moral is, those who cannot afford to maintain a Legend should not buy one.
Phate should tell us the symptoms of overheating that he is having first. Many, many Legend owners falsly think the cooling fan is bad when the reason they are not coming on is that the sensor that controls it is in a pocket of air, not coolant. It wont work correctly when this happens. If the cooling system has a lot of air in it the fans will act strange.
Read this post OVERHEATING 101 for a better understanding.
Read this post OVERHEATING 101 for a better understanding.
sensor that turns on radiator cooling fans are (1) A/C turns one on (2) at bottom of radiator on passenger side if I remember correctly. No air pockets at bottom of radiator unless completely empty. There can be certain cold weather conditions when the radiator releases enough heat without the air flow that the fans never come on. I just can't remember whether the sensor is normally open or normally closed. I think that it is normally open but my wiring diagrams are at home.
U get a chance post the wiring diagrams it will b of alot of helpMerlin the Wrench said:sensor that turns on radiator cooling fans are (1) A/C turns one on (2) at bottom of radiator on passenger side if I remember correctly. No air pockets at bottom of radiator unless completely empty. There can be certain cold weather conditions when the radiator releases enough heat without the air flow that the fans never come on. I just can't remember whether the sensor is normally open or normally closed. I think that it is normally open but my wiring diagrams are at home.
in my case the stealer said my cooling fan relay was shorted and the whole harness had to be replaced.i had my legend for 12 years and it's not that i can't afford to fix the problem.it's that i ain't gonna spend that kind of money on a 14 year old car and i don't care if it was a rolls royce.i have no overheating problems and my toggle switch works for me and that's how it will be until i decide to get rid of it.
I suspect a BHG on my car, but i does not have any white smoke. I just recently replaced the radiator in it because it had a hole in it, but i am losing cooland somewhere because i keep having to replace it. My "fans always on" solution was just a temporary one until i could come up with some money to either park my Legend and buy something else or repair it.
ya know, JetDoc, ya saw through that one. This had nothing to do with the fans, huh.
If you have a BHG:
As a last resort to "buy some time" you could remove the thermostat. This may help your situation and it may not. If you live in a cold climate it will be hard to get heat with the thermostat removed. This has worked for other members until they can make the repair or replace the engine.
As a last resort to "buy some time" you could remove the thermostat. This may help your situation and it may not. If you live in a cold climate it will be hard to get heat with the thermostat removed. This has worked for other members until they can make the repair or replace the engine.
i just bought my car and i think someone did a similar job... both fans are on all the time... there is a switch installed beneath the wheel but it doesnt seem to control the fans... maybe they just wired both directly to constant power... its winter now so i pulled one of the fans fuses so im going to work on one fan for a while... in the spring im going to buy a new radiator, new radiator thermo switch and try to rewire it properly
if there are any more developments i will keep you guys updated...
if there are any more developments i will keep you guys updated...
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