Hey guys. I have always found this site very informative and have tried to contribute to the knowledge base as much as possible over the last 6 years. This issue has me somewhat stumped. My wife came home today saying the truck had a slight whistle type whine noise. The A/C has cycled audibly and she is aware of that noise. This accumulator made a diaphragm squeak one time, but I could capture it. Is it supposed to cycle this frequently in Park? I know what it costs to replace and the thought of this thing going out makes me sick. Any help on whether or not this is normal would be much appreciated.
Forgot to add, this is an 07 4Runner with 116,000 miles.
Not sure if anyone on here has had their unit serviced rather than replaced.
Rather than take it to a stealership, who are going to hose you on replacing the entire M/C, can you find a shop that would be willing to service the unit and replace the accumulator? I'm thinking the M/C is still good because you can stop and don't have a brake warning light. The pump is OK because it is obviously still working unless you wait and it burns itself out.
Don't do any of the steps involving the M/C internals. You want to get at the sensor in step 21 or the accumulator as in step 29 in the following (this is from '04 but should still work).
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'04 SR5 V6 4x4 Galactic Grey Mica. Delivered 03/17/2004. Link to my mod list in posts 7, 8 & 9 of this thread: http://www.toyota-4runner.org/showthread.php?t=21354
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