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Ok, I now understand that with the engine off, I am reading static pressure. So, by it not changing when the vehicle is running and clutch engages, am I looking at a broken shaft on the compressor or something else?
Swapped the relay from the one for the defroster and AC compressor kicked on. Off to get a new relay in the morning. I did read that it could go out again in a few months if the clutch needs replacement. Only $7 for a new one, so will see how long it lasts.
I am convinced it is the strut itself. I pulled the cover up to get to the top of the strut nut and made sure they were tight on both sides. When I grab the passenger sided and move it up and down it makes the noise with almost no effort. Side to side does not make any noise. So, any travel on the strut it makes like a short grunt. No oil leaking from it. I will pull it and remove the mount and spring and see if it makes the noise just by compressing it.
I replaced the upper side and front mounts within the last few years, but have not checked them lately. The rear and one at the transmission are the originals. It would be a good idea to check them.
Thanks
Thanks, I will give it a try. You need to detach the plastic cover over the cover to get to the top of the mount, but that is fairly easy to pull up. Although, I would have thought, replacing the mount itself would have corrected a noise from there. I will try to record the noise and post it, but will first see if can feel that the noise is from the top.
Thanks cap, I finally gave up and took it to a local shop. According to the mechanic that fixed it, the issue was a cracked shaft. He ended up replacing the compressor and the pressure switch, as he said the pressure switch was faulty as well. He was not sure if they were related, but he did not charge extra labor for the pressure switch.
Anyway, it is blowing cold again, and hopefully it stays that way for many more years.
Did you compare the new hubs to the old one? Maybe they are the wrong model year hubs or they were manufactured wrong as they should float on the bearing and not touch behind on the drum back.
Checking the voltage against a good ground, it has voltage. So, does the clutch and the relay share a ground? I have a feeling this will be going in the shop on Tuesday 🙁
Cap, this is an EX-L with RES and NAV. If it were the switch or thermistor would you expect the condenser fan to work? Also, there is power to #12, so would either of these still allow power to #12? I ruled out power from one of the fuses by checking the hot end of #30 int he cabin and #12 under the hood.
Thanks cap, I pulled up the wiring diagram and according to it, if the pressure sensor is open, then the condenser fan should not be on either. I pulled #12 again and swapped it with another 7.5 just to be sure. Still no voltage to the relay. I am still perplexed why jumping pins 1 and 2 on the relay did not make the clutch engage, as this is all the relay is doing. I tested my jumper on the condenser fan relay socket and it did indeed make the condenser fan come on whether or not the AC was on.
Here is what I know:
1) Both #12 under the hood and #30 in the cabin have 12.93v.
2) The condenser fan comes on eliminating the pressure valve as the issue.
3) There is no power getting to relay for the A/C clutch.
4) Jumping the relay socket pins 1 and 2 does not cause the clutch to engage which it should if the compressor is getting 12v.So I am looking for something that would cut the power from #12 to the relay and the power to the compressor assuming that my tests and assumptions are valid. The dangerous part is that these are “my” assumptions based on my limited knowledge of troubleshooting this. I am fairly certain though that it is electrical in nature.
Took the tire off and removed the plastic cover but determined that there is no way I am going to be able to check the power at the connector to the compressor without a lift. If find it odd that jumping at the relay location still did not get the compressor clutch to engage, hence no power to the compressor. But what would explain no power to compressor and no power to the relay? As stated the other two relays (fan and condenser fan) get power and the condenser fan energizes when I turn the A/C on.
Does the pressure switch cut power to both? Could it be a computer problem?
