07 CRV, noticed on a highway trip when I turned the A/C on there was a very high "whine" for about 2-3 seconds, almost makes you ears ring it was so loud. The air is still cold, but what was is weird it only seemed to happen at highway speeds. Could it be a bearing in the clutch for the compressor or the condenser motor when I am turning the a/c on?

IS it inside the car or under the hood?

Under the hood, I would say you have compressor clutch issues.

I would have it checked before it gets to hot, or whenever it feels right.

Sounds like under the hood, I wonder why it happens just at higher speeds?

As the vehicle ages, the gap in clutch clearance increases, so when its engaging, you hear the chirp. you can try to remove the clutch and see if it was shimmed from the factory, if so, remove the shim. I had a super duty with 180k that would disengage the compressor at lower rpms. Later when rpms woul increase , the comp would squeal and catch. removed the shim and it never did it again.

After searching around the web, I think I found a TSB on it, I am at 25k, but just out of warranty having it be an 07, any luck that the dealer might pay for it since there is a TSB on it?

TSB 08-007

A/C - High Pitched Hoot or Whistle With A/C ON

08-007

February 6, 2008
Applies To:
2007 CR-V - ALL VINs Beginning with JHLR
2008 CR-V 2WD - From VIN JHLRE38..8C000001 thru JHLRE38..8C016154
2008 CR-V 4WD - From VIN JHLRE48..8C000001 thru JHLRE48..8C025123

A/C Whistles or Hoots

SYMPTOM

There is a high-pitched whistle or hoot from the A/C system when the the A/C compressor turns on while the vehicle is driven between 40 and 50 mph.

PROBABLE CAUSE

The refrigerant flow inside the expansion valve pipe assembly creates a whistle or hoot.

CORRECTIVE ACTION

Replace the expansion valve and pipe assembly.

PARTS INFORMATION

Expansion Valve and Pipe Assembly Kit:

P/N 06802-SWA-A00, H/C 8869141

WARRANTY CLAIM INFORMATION

In warranty: The normal warranty applies.

Operation Number: 6151B7

Flat Rate Time: 2.0 hours

Failed Part: P/N 80221-SWA-A01
H/C 8519076

Defect Code: 03214

Symptom Code: 04201

Skill Level: Repair Technician

Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.

DIAGNOSIS
1. Test-drive the vehicle between 40 and 50 mph with the A/C off.

Do you hear a whistling or hooting sound?

Yes - Disregard this bulletin, and look for other causes of the noise.

No - Go to step 2.
2. While maintaining a speed of 40 to 50 mph, turn on the A/C.

Do you hear a whistling or hooting sound?

Yes - Go to REPAIR PROCEDURE.

No - The vehicle is OK at this time.

REPAIR PROCEDURE
1. Start the engine, turn the A/C on, and let the engine idle for 5 minutes.

2. Turn the ignition switch to LOCK (0), and then recover the refrigerant:

^ Refer to page 21-68 of the 2007-08 CR-V Service Manual, or

^ Online, enter keyword RECOVERY and select A/C Refrigerant Recovery from the list.

3. Remove the evaporator core by doing steps 1 thru 7 of the A/C evaporator core replacement procedure in the service manual:

^ Refer to page 21-56 of the service manual, or

^ Online, enter keyword CORE and select A/C Evaporator Core Replacement from the list.


4. Peel off the EPT sealer, and remove the original expansion valve and pipe assembly, including the 0-rings, by removing the two socket-head bolts.

5. Install the new expansion valve and pipe assembly. Make sure you use the new 0-rings included in the kit.

NOTE: Apply refrigerant oil to the new 0-rings before installation.


6. Apply the new EPT sealer to the expansion valve and pipe assembly as shown.


7. Install the new 0-rings between the expansion valve and the A/C line joint side.


8. Replace the expansion valve cover seal with the new seal included in the kit.

9. Reinstall all of the remaining parts.

10. Charge the A/C system.

^ Refer to page 21-70 of the service manual, or

^ Online, enter keywords AC CHARGING and select A/C System Charging from the list.

11. Make sure there are no refrigerant leaks, and then confirm that the noise is gone by test-driving the vehicle.

TSB is not a recall.

You're gonna have to foot this one.

quote:

---

1. Test-drive the vehicle between 40 and 50 mph with the A/C off.

Do you hear a whistling or hooting sound?

Yes - Disregard this bulletin, and look for other causes of the noise.

---

i'll take owl in the dashboard for $100, Alex

quote:

---

Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.

---

Wouldn't hurt to ask. Isn't there a Honda tech on here that might chime in?

Many factors go into any decision for an after warranry adjustment. If you are local here in BCS call me(kyle) 979-696-2424.

If you are not local, call the dealer you use or the one closest to you.

That's the turbocharger winding up.....