Rogue4x4

$20 is a lot cheaper than $400, which is what a Fluke DMM rated for automotive use would cost. Sure you can get DMM's cheaper, but Fluke makes the best. After 25+ years in aerospace electronics manufacturing, a DMM is not a tool I would cheap out on, plus they are serviceable and can be calibrated. Properly used and cared for it will last you the rest of your life...just my .02, I'm sure plenty will disagree

BimmerJeeper

You're saying you need to spend $400 to do what the guy in the video does?

Rogue4x4

Yep.













Maybe you should read what I just wrote again, FFS

BimmerJeeper

Either you didn't watch the video, or you don't understand what I am trying to do.
To connect the relay to a power source, you just need a lead clamp
It costs $3. Not $400.
I already have a $20 Multimeter which is also connected to the relay

I just need these $2 clips to hook to a power source
http://www.ebay.com/itm/2PCS-Large-s...-/291044635531
http://www.ebay.com/itm/Pair-of-Dual...-/390731785364

Rogue4x4

Note the highlighted areas.

LOL I knew you wouldn't figure it out....

I don't know what tools you have or don't. Your multimeter will probably do the job just fine. I only said what I would do, based on lifelong experience. For someone who constantly tells people to re-read what you posted, maybe you should take your own advice. I too, love internet forums, but comedy and sarcasm aren't always readily evident. I knew you would react the way you did. LOL

BimmerJeeper

LOL, do you also tell your mother to buy a Ferrari to drive to church once a week??
I want to test a $10 relay, not change careers, spend $25,000 on Fluke tools and classes, and become an professional electrician.

I don't need a MM, I need test clips that fit onto a car battery.
Please read what I said in post #25

Rogue4x4

LMAO!

prcherokee

BimmerJeeper

I replaced my AC Relay with a new one.
AC clutch still doesn't engage.
I can see the bolts in the pulley not spinning.

Just to make sure I'm testing this correctly,
I just turn the HVAC **** to the blue snowflake, and put the temp. dial onto blue.
This should be enough to engage the AC, right?
There is no AC button that some cars have.

CCKen

Right, if the engine is running.

Where do you live in the USA? Lower ambient temperatures, below approximately 30°, will cause the low pressure clutch cycling switch contacts to open. This is due to the pressure/temperature relationship of the refrigerant in the system, therefore the clutch won't engage.

Also, the low pressure cycling clutch switch contacts are open when the suction pressure is approximately 20.5 psi or lower. The switch contacts will close when the suction pressure rises to approximately 34 to 38 psi or above, allowing the clutch to engage. Do you know what your suction pressure is?

The low pressure clutch cycling switch is located on top of the AC Accumulator.

Rogue4x4

Sell the barnacle.

CCKen

Here's how to check the clutch if the suction pressure is too low or the ambient temp is too low.

You will be jumpering the two pin cavities in the low pressure clutch cycling switch connector with a paper clip, or equivalent.

Refer to the pic below.

Unplug the connector from the switch. Jump the two pin cavities in the connector with a paper clip. Do not force the paper clip into the pin cavities if they won't go in easily. If necessary, file down the ends of the clip wires so the fit easily, but snugly.

Turn the mode selector to any AC setting (snow flake), turn the ignition switch to RUN (ON), but do not start the engine. The clutch should engage.

Try this and see what you find.

BimmerJeeper

Thanks CCKen. Those are very clear directions.

The only problem is that I won't be able to see the clutch engage from inside the car. Not sure if I will hear it.
Before I try this, I will try to push in the clutch with my hand just to see the difference of engaged vs. disengaged.
Then, after I turn the key, I will get out and go look at what state it appears to be in.

jake92

What's the temp there?

If it's under 60-65 then give up.

The A/C isn't designed to work during the winter. Pressures are way TOO low for operation. Refer to a temp/pressure chart. The high cycling of the compressor is due to low pressure such as being too cold.

CCKen

That's it.