hi guys
i have trouble with my AC wich is not working
i've checked it and i saw that the fan is not working, so i took out the plug and checked for power, the was none. So i go to the fuse box and i see that the fuse for the ac fan is blown. I change it , turn the car and ac on, fan makes 1 rotation and went off again so i checked the fuse and i saw it burned again. So obviously i have some malfunction in the electrical wires right ?!
Im just need some directions were to look at. This is what caused the problem: few monts ago i washed the engine, cuz it was oily ( i had a leak since i bought it) so i washed it with that engine degreaser and spray it with water, but unfortunatelly i had to go and didn't rally let it dry. So when i started the engine everyhting was fine but later when i turn the ac on it started shaking, some weird clicking and the engine was like choking. anyway the next day was all fine, and i've been driving with no problems with ac off, but anytime i turn the AC on on idle (or on the red lights) the car is choking and trying to turn off. Last week i saw that no matter i turn it on or off is not choking anymore LOL. So i want finally to fix it but i dunnoo were to start!!
Any suggestions are wellcome !
Thanks fellas and sorry for the long post

 

when was the last time you used a/c before washing it? the fan could possibly be seized, causing the fuse to pop.

 

almost everyday, and when i touch it with my finger it rotates.. so only thing i think of is a wires...

 

Unplug the fan, turn A/C on, see if fuse still blows, if not, replace fan, it has a short. 94

 

thanks for the advise fcm i'll try it tomorrow
btw could it be the fan relay ?! i just have feeling its either the wires touching or the relay...

 

Yes it could be the wiring or relay, that's what unplugging the fan will tell you, if fuse still blows I would move on and de-pin the relays output, [lead running to fan] and try again.

What is the MM&Y of the car? 94

 

its a 95 civic EX, i tried today it the fuse blows with unplugged Fan, so im gonna try to find a way of jumping the relays, wich btw are 2 next to each other . Do u know why ?! in the big book it just says it fan relay ...

 

With A/C there are two relays, one is the rad fan relay the other is the condenser fan relay.

Keep in mind the condenser fan fuse is probably also the A/C compressor clutch fuse so the problem may not be the fan, it could be the compressor clutch.

I would unplug the condenser fan and supply power and ground to it directly, [off batt.] to see if it works properly, if it does I would do the same thing to the compressor clutch. 94

 

hi again. i've tried today jumped the fan it works. i unplugged everything start the car and AC and start to plug one by one to see when the fuse is gonna blow , but guess what it didn't . And there is no voltage at the fan plug . so im thinking there is a broken wire ??!

 

Is there voltage out of the condenser fan relay, should be a blue/black lead.

Also, check for continuity between the output of the condenser relay and the pos.(+) input to the condenser fan.

As I mentioned, unlike the rad fan, [rad fan relay supplies the rad fan with a ground, the 12V(+) is constant] the condenser fan is supplied 12V(+) by the condenser fan relay and the condenser fan has a constant ground.

Also keep in mind, when condenser fan turns on the rad fan should also turn on. 94

 

just drive to canada he can fix it thats what he does..

 

"Is there voltage out of the condenser fan relay, should be a blue/black lead"


yes there is volatage, but i got dark today, so tomorrow im gonna start checking for continuity

 

how can u tell if the ac compressor and the clutch are working ??

 

The clutch is easy, it will "engage", you will hear the "click" and see the clutch plate start spinning when it does.

Whether the compressor works or not you can't really tell, other then you know it is if the clutch engages and you get cold air.

The clutch may engage and you do not get cold air could mean a bad compressor or it could just be a low charge or a restriction, [plugged orifice tube] high head pressure because of overcharge or poor airflow, [no condensor fan] would cause the same thing.

A set of gauges is needed to determin what the problem may be.

If compressor clutch does not engage then condenser fan will not either. 94

 

ok here is the thing today i opened all the plugs and what happens is there is no voltage on the blu/blk wire ( the condanser fan connector). but that same wire gets voltage from the white wire wich comes from the fuse box and splits into both ralays ( fan and compressor). the ralays are working i've teste4d them. so i check the white wire and it turns out there is no voltage there. so i unplugged the "AC harness connector" (on the pic) behind the right headlight and checked for continuity and the wire between the connector and relay's is fine. but the part from the battery + to this connector there is no continuity ?! so thats one issue and there are a lots of wires getting together and finnaly all go to the + so i dont want to mess it up.

The second part is that i jumped this whole wire giving 12V to the relay and then i everything turns on and works besides the air is not cold ?! but i know there is freon and the fan is working, blower blows , what else... when i dissconnect the blue red/wire for the ac switch i can see the engine chenging his rpm's so thats working as well.
and thanks so much FMC for your help , cuz u are the only one acctually reading my bullshit

 

If air is not cold when compressor is on you have a low A/C refrigerant, [R134a] charge or high head pressure because of overcharge or poor air flow through condensor.

What is the MM&Y of car? 94

PS, do not run compressor for more then a few seconds by jumping, if system charge is low, refrigerant oil is not circulating and that's the same to the compressor as running an engine without oil.