blackouthx

Okay, I need your guys help here.

Recently my belt going to my A/c etc has been slipping and making noise so I decided to tighten the belt. All was good for a day then stopped blowing cold (compressor not engaging).

I think I may have over tightened the belt, I tried loosening it some and still nothing. Switched around my relay with the heater one to see if it was a bad relay and still nothing.

Any advice on how to fix this or is it one of those $$$$ lessons?

Thanks in advance!

Former User

Does the condenser fan run when you turn the A/C on?

blackouthx

Yup, the fan turns on and everything just not cold. I hooked an "ac guage" up to it and the pressure was in the red zone which makes sense because the clutch isnt engaging.

thank you

Former User

If you remove the compressor clutch relay from the hood fuse box, does the compressor clutch engage if you use a jumper wire to bridge terminal 2 or 4 to terminal 1 in the relay socket.

blackouthx

Just did it and the compressor did kick on????

thanks you rock, now what does this mean and any knowledge on how to fix?

Former User

Did you do the test with the engine running or the engine off with the key in ON(II)? Did both tests (2-->1 and 4-->1) make the clutch engage?

blackouthx

Im sorry, i think I mis-read what you were asking.

the compressor only turns on when hooking 1 & 3

blackouthx

Car was running

Former User

That's impossible. Note that the relay terminal configuration (diagram) is the mirror image of the relay socket. You must have tested 4-->1. Now test 2-->1.

blackouthx

Oh gotcha, in that case it was 4>1 . 2>1 does not work

Former User

2-->1 should make the clutch engage. Try the test again to verify.

blackouthx

nope, not engaging with 2>1

Former User

If the condenser fan runs but a 2-->1 jump will not cause the clutch to engage, then the hood fuse box is likely bad.

blackouthx

Cool thanks for all the help, Ill have someone look at it on Friday.

Just seems strange that all of the sudden after I adjusted the belt the compressor stopped engaging. Unless I did something that would damage the fuse box. The compressor has been working fine prior to this.

thx

Former User

You can verify the diagnosis by showing a lack of continuity between hood fuse 56 and terminal 2 of the compressor clutch relay socket.

blackouthx

That's about where my mechanical ability ends haha

Can you explain how to do this in "dummy" terms? Multimeter?

Former User

It's an easy test to do. Post a clear picture of your multimeter.

blackouthx

I don't have one on me now but will tomorrow at work.

Can you give a description on what I would do so that I can give it a shot tomorrow?

much appreciated

Former User

If you don't know how to use the multimeter, then I need to see a picture of it to describe how you will do the test.

blackouthx

This is the one at work (same one), found image online.

Former User

1) Plug the red wire probe into the right side red hole. Plug the black wire probe into the black "com" hole.

2) Turn the key to off in the car, disconnect both battery connectors, and then remove the clutch relay from the hood fuse box.

3) Dial the multimeter to the continuity setting (sound symbol below the Ohm/omega/horseshoe symbol). When you touch the two meter probes together, the meter should make a noise (beep or buzz), which indicates continuity.

4) 20A hood fuse 56 has two metal test tabs on its top. Touch one meter probe to one of the top test tabs of installed fuse 56 and the other meter probe to terminal 2 of the clutch relay socket. Does the meter buzz or beep?

defense03

I am having a smiliar problem with my 99 Honda Civic LX. I was told it was a wiring problem by one shop and a bad compressor by another. My car was in an accident and the firs said they must have cut a wire, hence 2 shops have looked at my car. Can you replace just the clutch would this solve the problem, if there is no continuity can you repace just that fuse?

defense03

I tried the 1-2 and 1-4 commections. I got a clicking noise and that was all with the car running and a/c turned on. any tips for me?