97 Acura CL (Accord) Radiator Fan Never Shuts Off
#1
97 Acura CL (Accord) Radiator Fan Never Shuts Off
Hi Everyone,
My car wouldn't start one morning and the battery was completely shot. I got a jump and got it started and realized that my radiator fan would be on no matter what. So I looked at how that circuit worked and determined a few things (let me know if these are wrong.)
Then I plugged the switch back in to test it with the fuse in and the key off. When I unplugged the switch the fan remained on, so I determined the switch wasn't the problem. I tried to read the circuit diagram and figured that my fan timer module was shot and was being grounded somewhere where it shouldn't be. So I purchased another one and replaced it but am having the same issue. I also swapped the fan relay with another one and still had the issue. What am I missing? Thanks in advance.
The car has 273k miles on it and at worst case I'll just wire in a toggle switch somewhere and turn it off every time I get out of the car.
My car wouldn't start one morning and the battery was completely shot. I got a jump and got it started and realized that my radiator fan would be on no matter what. So I looked at how that circuit worked and determined a few things (let me know if these are wrong.)
- None of the 4 coolant temp sensor talk to each other. (Fan while car is on, fan while car is off, ECU temp, and the signal to the dash)
- The one by the upper radiator hose is responsible for turning on the fan if the car is hot when they key is off.
- The fan timer module controls how long the fan stays on and takes a signal from the switch.
Then I plugged the switch back in to test it with the fuse in and the key off. When I unplugged the switch the fan remained on, so I determined the switch wasn't the problem. I tried to read the circuit diagram and figured that my fan timer module was shot and was being grounded somewhere where it shouldn't be. So I purchased another one and replaced it but am having the same issue. I also swapped the fan relay with another one and still had the issue. What am I missing? Thanks in advance.
The car has 273k miles on it and at worst case I'll just wire in a toggle switch somewhere and turn it off every time I get out of the car.
#2
Honda-Tech Member
Re: 97 Acura CL (Accord) Radiator Fan Never Shuts Off
First, which fan is running when the car is off and "stone cold"?
Can we assume this is a 4 cyl car - sorry don't know my Acura's that well.
Can we assume this is a 4 cyl car - sorry don't know my Acura's that well.
#3
Re: 97 Acura CL (Accord) Radiator Fan Never Shuts Off
#4
Re: 97 Acura CL (Accord) Radiator Fan Never Shuts Off
driver side fan = condenser fan
passenger fan = radiator fan
does the radiator fan ever run ? the upper radiator switch only turns on the radiator fan
it's possible the condenser relay is stuck closed
passenger fan = radiator fan
does the radiator fan ever run ? the upper radiator switch only turns on the radiator fan
it's possible the condenser relay is stuck closed
#5
Re: 97 Acura CL (Accord) Radiator Fan Never Shuts Off
Wow, I'm an idiot I just assumed that was the case because the other fan wasn't running. Also I was looking at it today and now neither fan runs so I'm doing see if I'm getting 12V at the connectors, and if I am replace the fans, then check the condenser relay. If not, I'll do some more digging and report back. Thank you!
Thread
Thread Starter
Forum
Replies
Last Post
PearlBlueType-S
Honda Civic / Del Sol (1992 - 2000)
2
05-01-2006 11:58 AM