plumcrazebody

ok, my brother has a 2000 V6 accord and i noticed it was overheating and the A/C was getting warm while parked or sitting still. I checked and the cooling fan nor the condensor fan is coming on. I replaced both relays and all fuses related to the fans and fan relays. i still cannot get the fans to come on. Will a bad thermostat cause that? If so, it still doesnt make sense that to condensor fan isn't working when the A/C is turned on. What about temp sensor? Any ideas would be appreciated.

poorman212

Yes there is a sensor for turning on the fan due to engine temp. 2000 is a bit newer than what I'm use to, check for a green connector on the t-stat housing...best to get a manual to make sure.

plumcrazebody

would that sensor cause the fans not to work even when you turn on the a/c?

poorman212

Sorry, reading is the death of me. I see the fans do not work at all (by temp or by AC). My first read led me to believe they came ON when the AC was turned on.
So no the switch does not sound like the issue. Have you put power to the fan motors just to be sure they are good, odd that both would go out but they need to be ruled out.

hondamark35

i'll second that.

a thorough, systematic approach is key. i like to start at the end (the fans) and work backwards, but that's just me. The FSM says to check fuses #57[20A], #58[20A] and #3[7.5A].

it also suggests that this could be caused by bad connections or loose wires from the relay and from the PCM... green wire- pin #20 on the 32 pin PCM connector A. not sure how common that is.

phootbag

Loads and mechanical parts are usually the first to fail.

rastadestroyer

well, you could always go the special route and run the fans on a switch. lol but in any case, its all systematic, if the fans work when direct power is applied, run a test light on the whole system starting from the relays and fuse box, easiest way to see where you are loosing power