Fans not spinning
#1
Fans not spinning
So I was getting ready to change my AC compressor, expansion valve, and drier myself, then take it to Honda for a AC flush and recharge.
However, I noticed that neither of the two fans in the front of the car are spinning...ever.
Could this be a fuse problem or what?
I tried with AC on and off, heat on and off, car idling, AC off but vent air on (recirculation).
These fans have to do something, sometime. I just cant get them to turn on.
No I don't have an ammeter to check if they are getting power or not.
Any ideas of how I can try to get them to turn on?
However, I noticed that neither of the two fans in the front of the car are spinning...ever.
Could this be a fuse problem or what?
I tried with AC on and off, heat on and off, car idling, AC off but vent air on (recirculation).
These fans have to do something, sometime. I just cant get them to turn on.
No I don't have an ammeter to check if they are getting power or not.
Any ideas of how I can try to get them to turn on?
#4
as far as OP, can you at least make a jumper wire, to bypass the fan relays temporary, just to see if they work manually?
#5
Sorry, 2004 SSM 5AT (Non-nav)
On a side note, I was thinking of just replacing all the AC related fuses and or relays just to make sure I'm not missing something stupid.
#6
So I was getting ready to change my AC compressor, expansion valve, and drier myself, then take it to Honda for a AC flush and recharge.
However, I noticed that neither of the two fans in the front of the car are spinning...ever.
Could this be a fuse problem or what?
I tried with AC on and off, heat on and off, car idling, AC off but vent air on (recirculation).
These fans have to do something, sometime. I just cant get them to turn on.
No I don't have an ammeter to check if they are getting power or not.
Any ideas of how I can try to get them to turn on?
However, I noticed that neither of the two fans in the front of the car are spinning...ever.
Could this be a fuse problem or what?
I tried with AC on and off, heat on and off, car idling, AC off but vent air on (recirculation).
These fans have to do something, sometime. I just cant get them to turn on.
No I don't have an ammeter to check if they are getting power or not.
Any ideas of how I can try to get them to turn on?
#7
#9 in the image below is the fan temperature switch. It is on the driver's side of the radiator and has a two-wire connector that plugs into it (the wire colors are green and black).
With the key turned off inside the car, unplug that connector. Take a piece of wire or bend a thin paperclip into a U shape. Stick an end of the wire into each of the sockets of that connector. Turn the car on, see if the fans run immediately.
With the key turned off inside the car, unplug that connector. Take a piece of wire or bend a thin paperclip into a U shape. Stick an end of the wire into each of the sockets of that connector. Turn the car on, see if the fans run immediately.
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#8
PaHonda, thanks for that.
I've located the problem, bad relays per the tsx manual I downloaded. changed them out and now the fans start and stop as needed.
Now I just need to sift through this 177 page document to find out how to change the expansion valve on the evaporator (in the dash nightmare).
I've located the problem, bad relays per the tsx manual I downloaded. changed them out and now the fans start and stop as needed.
Now I just need to sift through this 177 page document to find out how to change the expansion valve on the evaporator (in the dash nightmare).
#9
OP: Glad you found out what it was and caught it before causing any other damage. Good luck with the expansion valve.
#10
Yes, but in regards to the TSX the fans come on as soon as A/C is on. When the A/C button is pressed on with the car off and key in start position, you should hear fans coming on and off when the button is pressed again to turn off. Just my to help anyone out in the future.
OP: Glad you found out what it was and caught it before causing any other damage. Good luck with the expansion valve.
OP: Glad you found out what it was and caught it before causing any other damage. Good luck with the expansion valve.
#11
AND, with the AC off, I've never heard the fans run - I've parked the nose against the garage and waited ... temp gauge never budged and the fans did not come on. Pretty efficient cooling system indeed. 06 with MT.
#12
Sounds like what my TL is doing now, but it's only doing that because the thermostat is stuck open. Have to change that when I get a chance.
#13
The fans run to keep the internal AC pressures controlled - it's a heat transfer thing. When a small amount of cabin cooling is required, my fans cycle on and off. When it's really hot outside, they run mostly continuously.
AND, with the AC off, I've never heard the fans run - I've parked the nose against the garage and waited ... temp gauge never budged and the fans did not come on. Pretty efficient cooling system indeed. 06 with MT.
AND, with the AC off, I've never heard the fans run - I've parked the nose against the garage and waited ... temp gauge never budged and the fans did not come on. Pretty efficient cooling system indeed. 06 with MT.
and if the fans NEVER come on without the A/C, i actually be kinda worried some, cause they should eventually come on (especially if the hood is shut), BUT they will not immediately come on though, they may take 5-10 minutes or slightly more to come on, after stopping, and everything starts to heat soak
and as far as the cooling system being efficient, more like it is large enough, and not just marginal like most domestics (basically when you have to refill a honda cooling system, you can leave the radiator cap off, and are able to top the system off, even after the engine has fully warmed up, and the fans start to cycle occasionally [hood open obviously though], but on alot of domestics [ones with electric fans especially], yeah it boils over, normally before the fans even come on, so yeah the cap has to stay on, even to just warm up)
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