So...what's this "gurgle" thingy coming from under the radio on my 99
RX-300. Seems to be related to heat/ac, but the gurgle can occur with the
engine and a/c off. A buddy told me to run the heat and air on full blast
to try and get air out of the cooling system. Didn't really work.

It isn't there continuously. However, it could be happening when driving
down the road, and I just don't hear it.

Anybody else getting such a noise?
--Wayne
<I called the Lexus dealer about it, and he said that whatever the problem,
it is bit of work to get to.>

"Wayne" <mygarbagecan (AT) verizon (DOT) net> wrote

Noises are difficult to diagnose without hearing them first hand. There
could be air in the cooling system, especially if you have had any work done
on the system before the noise started.

Check the coolant overflow reservoir to see if it is empty, and with a COLD
engine, remove the radiator cap and check the coolant level in the radiator.
The coolant level in the radiator should be right up to the bottom of the
radiator neck and the level in the overflow reservoir should at least be at
the "MIN" mark.

If the coolant level is low in the radiator, add the proper mix of coolant
to the bottom of the radiator neck and in the overflow bottle to the "MAX"
mark. Start the engine and set the heater to full hot. Let the engine
get to operating temperature and the electric radiator fan kicks on and top
off coolant as necessary. Once the coolant starts flowing past the radiator
neck, replace the cap and shut off the engine.

Keep an eye on the overflow reservoir and add coolant as necessary.

If you are hearing a sloshing sound, you could have water in the evaporator
housing due to a clogged evaporator housing drain hose. Look for a black
rubber about the diameter of your finger under the passenger side of the
vehicle near the firewall. Poke a stiff wire through the hose to make sure
it is not clogged.

Another possible cause is the automatic AC system, and that is not really a
DIY job.
--

Ray O
(correct punctuation to reply)

"Ray O" <rokigawa (AT) NOSPAMtristarassociates (DOT) com> wrote

and the levels look good.
I'm just about at the end of my competence in this particular problem area,
so professional help is next.

During a ten year period, a burned out brake light was the only problem I
had on the RX. Getting lots of problems at 95,000 miles though!

Thanks.

On Oct 30, 9:59*am, "Wayne" <mygarbage... (AT) verizon (DOT) net> wrote:
I hear the same noise in my 1999 RX300, not sure where is coming from,
but it sure sound like what you describe in this post, my center
console is kind of noisy too, specially when it is open (slide out).

Abid

Sounds like a problem I had last year. My local Toyota dealer got rid
of the air in the system and the problem persisted. Lexus correctly
diagnosed the problem and fixed it. I believe it was something called
the servo motor? that had shorted out. That motor controls the door
that switches the system from outside air to recycled air. The gurgle
was the door flapping back and forth. The replacement cured the
problem but it was expensive ($800).




On Thu, 29 Oct 2009 17:18:41 -0700, "Wayne" <mygarbagecan (AT) verizon (DOT) net>
wrote:

"J Golden" <prettygoldenboy (AT) yahoo (DOT) com> wrote

though, perhaps a Highlander because we have a Toyota dealer in town, and
the Lex place is 25 miles away.
--Wayne

I was seriously thinking about a Highlander or a Forerunner until my
local Toyota dealer closed down literally overnight a few weeks ago.


On Sun, 1 Nov 2009 08:00:10 -0800, "Wayne" <mygarbagecan (AT) verizon (DOT) net>
wrote: