Now another issue....

[Chaos]

Well, I grabbed a fully tested, functional hvac control this morning to fix my vents only working at 4 and no a/c issue. I pulled the old one out to find that the vacuum harness wasn't fully connected since somehow one of the plastic studs was missing.

So, I install the newer controls and......same issue. Only now, the compressor makes a clicking sound, but the blower still only works on 4.

WTF could it be?

[hippie metal]

Doorless mod...problem solved

[Chaos]

Doorless mod...problem solved

That's always a great option

[justtorchit]

but the blower still only works on 4.

WTF could it be?

blower motor Resistor

[justtorchit]

Only now, the compressor makes a clicking sound

so your not getting any AC?

you say the compressor is clicking. Im guessing thats the clutch on teh compressor enganging. How long does the compressor stay running?

Are you low on refrigerant?

[Chaos]

so your not getting any AC?

you say the compressor is clicking. Im guessing thats the clutch on teh compressor enganging. How long does the compressor stay running?

Are you low on refrigerant?

Just realized that the resistor is the fault for the blower....

It's a dull click, but the clutch doesn't engage at all. I do have a pressure gauge for the system. I have no idea when it worked last. I can move the clutch by hand though so I know it isn't frozen up.

[justtorchit]

check to see if your getting juice to the compressor. Put a multimeter on the AC fuse in the fuse block under the hood. i think its a big 20 amp fuse. check to see if you have 12 volts with the AC on.

another way to check is by taking a screwdriver to the compressor while its running and see if it gets magnetized to the clutch... (CAUTION.... DANGEROUS.... DONT TOUCH THE FAN)

If you have no power it could be the pressure in the system is low, i think the pressure switch wont kick the compressor on if its too low.

if you have power to it and the compressor still isnt engaging it could be the shimming between the clutch disk and the compresor shaft... Pull the nut off the shaft, pull the clutch disk off, and there should be a tiny little washer/shim (could be multiple shims) that spaces the disk off.... take that out and put it back together... and now hopefully the compressor will engage

[Chaos]

Got some results. I checked the pressure and its perfectly charged. I then discovered that cyl # 1 plug wire wasn't plugged in. Somehow, when I started it back up, the compressor worked twice for a few seconds each time and didn't work afterwards. I did take out the blower motor resistor and its completely rusted.

[justtorchit]

Got some results. I checked the pressure and its perfectly charged. I then discovered that cyl # 1 plug wire wasn't plugged in. Somehow, when I started it back up, the compressor worked twice for a few seconds each time and didn't work afterwards. I did take out the blower motor resistor and its completely rusted.

not sure how you didnt notice you were a cylinder down lolololol.

try taking a shim out and report back.

[Chaos]

I'm not sure how I missed that either lol. I'll try the shim on Wednesday, getting too hot out here.

[Burton58]

blower motor Resistor

Beat me to it

[Chaos]

Today, I went through the while shim operation. I know OEM spec is .020. It was way over that. Took one shim out and it brought it into spec. Fired it up........and nothing at all. I tested the fuse.....had power. I tested the connectors to the relay.....had power. Tested the harness to the compressor...NO power. Figured it's a relay. Went and picked up a new one. Put it in, and low and behold, nothing happened.

Bad clutch? or is the compressor somehow dead after working (albeit briefly) on Monday?

[Chaos]

Just realized something: Over the past couple heat waves, at times the electric fan won't come on, and I know on a couple of instances the temp has hit 217. I'm going to see if it's working at all tomorrow, but could a dead cooling fan relay cause the lack of power to the compressor even though the fuse and relay for the a/c are fine?

[hippie metal]

Part out.

[Chaos]

I finally fixed it tonight. Squeals like a pig when it starts up, but the belt has outlived it's usefulness. At least I have ice old ac and a headliner that will take a nuclear blast. On to the next repair/thread....