Update on A/C noise issue
#1
Pole Position
Thread Starter
Update on A/C noise issue
OK, update on my A/C noise issue. As per my other thread, the A/C was making noise and the dealer decided it was the compressor "clutch". After some haggling about what's covered under my extended CPO warranty, Lexus agreed to fix it and I got the car back yesterday. Allegedly they replaced (as per my receipt) the "CLUTCH ASSY, MAGN". Part Number 88410-0E010. No other parts were reported as being replaced.
Today we were driving in the heat with the A/C on and the noise is still there. I have been able to determine, absolutely, that it's an A/C thing (when I hit the HVAC "OFF" button the noise dies instantly). Furthermore, I have determined that it only makes the noise as the car revs from idle thru 1100RPM. After 1100 RPM the noise goes away. But as the car downshifts and the revs come down thru 1100, again the noise is there. If I put the car in neutral, the noise is reproducable exactly at 1100 revs when the compressor is on.
I'm gonna take it back tomorrow but am wondering if this additional detective information might help any of you to identify something I can hang my hat on. Is it the compressor and not just the compressor clutch? I'm not very mechanical, but I do understand the basics for purposes of discussion (only). Again, once I hit the "OFF" button on the HVAC, the noise dies instantly, so it's not the tranny or differential, which I originally thought it might be.
Today we were driving in the heat with the A/C on and the noise is still there. I have been able to determine, absolutely, that it's an A/C thing (when I hit the HVAC "OFF" button the noise dies instantly). Furthermore, I have determined that it only makes the noise as the car revs from idle thru 1100RPM. After 1100 RPM the noise goes away. But as the car downshifts and the revs come down thru 1100, again the noise is there. If I put the car in neutral, the noise is reproducable exactly at 1100 revs when the compressor is on.
I'm gonna take it back tomorrow but am wondering if this additional detective information might help any of you to identify something I can hang my hat on. Is it the compressor and not just the compressor clutch? I'm not very mechanical, but I do understand the basics for purposes of discussion (only). Again, once I hit the "OFF" button on the HVAC, the noise dies instantly, so it's not the tranny or differential, which I originally thought it might be.
#3
Pole Position
Thread Starter
Trust me, this noise is a LOUD WHIRLING/WHIZZING high pitched noise at exactly 1200-1300RPM.
#4
Lexus Champion
#5
Pole Position
Thread Starter
I took in yesterday and they agreed it was probably the compressor. They ordered one and I'm scheduled for repair on Monday. I hope that solves the problem.
#7
Pole Position
Thread Starter
Thanks. As an aside, although the vehicle is 6 years old, it only has 48000 miles. Should I be disappointed that a Lexus would have a problem like that this early?
Trending Topics
#8
It's a component manufactured by another company, Denso maybe, not a Lexus brand fault.
Don't really have an answer to your question.
At least you'll have a quiet ride when the AC is on.
With that few of miles on it and given age, it might be that the oil inside the closed system doesn't get circulated often enough causing the internal parts to have a shorter lifespan.
Don't really have an answer to your question.
At least you'll have a quiet ride when the AC is on.
With that few of miles on it and given age, it might be that the oil inside the closed system doesn't get circulated often enough causing the internal parts to have a shorter lifespan.
#9
Pole Position
Thread Starter
Good point. And here in Pittsburgh it's not uncommon to go 8 month without running the A/C. As to whether it's Denso's or Lexus's fault...I don't buy it. Either way it's Lexus's fault, because it's their duty to be sure that purchased components are built to Lexus standards.
It should be fixed by tomorrow and I'll move on! Thanks, all, for your thoughts on this.
It should be fixed by tomorrow and I'll move on! Thanks, all, for your thoughts on this.
#10
Lexus Champion
Just do me a favor when you pick it up tomorrow. Ask if it was a new or a reman compressor. Hopefully it will be a new one they put on it. I have little, to no faith at all in reman`s.
#12
Pole Position
Thread Starter
I actually knew that but forgot! Good tip. Thanks!
#13
I read once a week for minimum 10 minutes in one or two of my owner's manuals (for different vehicles I've owned). What it actually does is circulate the oil through the system to keep everything lubricated - seals etc.
Thread
Thread Starter
Forum
Replies
Last Post