mattciar95

i have a 2002 civic ex and recently the a/c stopped working. the compressor doesn't engage when the a/c is turned on. i have checked the relays and fuses and all appear good. the compressor has power going to it. i was told by a service writer at a honda dealership to evac the system and replace the thermostat, but that seems like a lot of work for a shot in the dark. any ideas?

jivi

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mattciar95 &raquo;</TD></TR><TR><TD CLASS="quote">i have a 2002 civic ex and recently the a/c stopped working. the compressor doesn't engage when the a/c is turned on. i have checked the relays and fuses and all appear good. the compressor has power going to it. i was told by a service writer at a honda dealership to evac the system and replace the thermostat, but that seems like a lot of work for a shot in the dark. any ideas?</TD></TR></TABLE>

check your power transistor here's the link https://honda-tech.com/zerothread/2041582

HTH

mattciar95

thanks for the help. i tried adding the resistor, but it didn't help. any other ideas?

EM2ner

Can you hear it click on when you turn on your defrost? Maybe its The Switch? i dunno

02_civic_4u

Check the pressure in the system. If it doens't have any R134a in it then it will not engage. Go buy one can with the pressure gauge and it will show you if you system is empty.

mattciar95

i checked the pressure in the lines before i realized the compressor wasn't running because thats what i thought the problem was. it was already fully charged...

civiPete

I have the exact same problem on my 2002 Civic! What was your solution?

TALONTRAX

I just had this problem . . . it`s the evaperator temp. sensor/compressor cycling controller. Look under your driver`s side dash, at the side of the heat/ac. box . . . it`s a little white plastic oval shaped thumb nut, wired to the system. Turn it ccw a half turn & pop it out, it`s $13.00 at your local dealer. It took me 2 hours of f##king with it to find this . . . it works good now !

Btw:
if you want your a/c to be R E A L L Y cold, just leave it hanging by the wire, & don`t put it back in the case, & the comp. will run longer & make the a/c I C E cold . . .

phootbag

If you say the compressor has power going to it, check the resistance of the clutch coil. It should be something like 4 ohms. And, if the coil is burned, the clutch may be overworked by a failing compressor.