Okay, so Ive tried before to explain this probelm, but I want to try again just to see if anyone knows something I dont here.

So, today I turn on my a/c for the first time, and whenever I accelerate, no matter what gear im in, I hear this gurgling noise. I dont know how else to describe it, other than some sort of fast moving liquid sound that kinda bubbles real quick (for about .5 sec) than goes quiet, until I accellerate more. This problem also presents itself during the winter, but its less severe. It only happens then when I am in about 2nd or 3rd gear and accelerate, usually under a bit hard acceleration. I have no clue what this is. I think the heater core might need to be bled, but I dont know if that will solve it. Also, the fluids are full and I changed the coolant to toyota red last june.


any thoughts???

 

its probably your knock sensor. try switching your gas.. fill your tank up with sunoco 94, and take a ride on the highway... mine does the "gurgling" if i use a BS grade of gas.

 

sounds like a little leak in the exhaust. I think i have the same thing after i replaced my y-pipe, i didn't change one of th egaskets.

 

I would make sure it's not the heater core before going too far into another direction. Did you have good heat during the winter?

 

i had the noise in my tranny after a flush.... it had air in the systems causing the noise

 

Definately not the gas. Ive only ever used Chevron 93

 

how did you get rid of it? Or do you still have it?

 

Yes, my heat works wel during the winter. would air in the heater core effect the A/C as well?

 

How do I rule this one out? Ive never changed or modified anything on the exhaust

 

As far as I know the air in a heater core would not affect the A/C. It would affect the heat output though..

 

Well, it sounds like air moving in some sort of liquid filled line. Im not sure what line or what area its coming from, but it only happenes when my A/C or heat is turned on. At least, thats when I notice it...

 

I have the same problem. My first two thoughts that came to mind when I heard it was: Air in the Heater core (common on last gen 4cyl Camrys)
or exhaust leak. I just picked up my vehicle from the body shop and the paperwork shows they use a gallon of coolant. I would purge the cooling system some more first and see if that helps. If not then I am guessing exhaust leak like mentioned ealier. My problem I think is related more to an exhaust leak since I took out my y-pipe before sending it to get repaired. Let us know if you find a fix.

 

I have the same problem. I have a 2k2 gle and it sounds like its coming from the right, around the area where the glove compartment is located. It only happends when the ac/heat is just turned on and then goes away after a while. I was planning to go straight to nissan to check it out but they will definately charge an arm and a leg for this. Does anyone know if this can be linked to the incabin microfilter??

 

I dont even know where to begin with this. I really dont want to drain all of the coolant, or take it somewhere to have it flushed. I cant be the only one who has had this problem.

Another note: this has been ongoing since I first bought the car, almost 4 years now. At first, it was nothing, but now its constant and I cant stand it. The dealership had no idea what it was, but called it normal. I am praying that someone responds to his post with a fix they have done. I will pray for now....

 

I don't think he meant drain the coolant. I believe he meant make sure all the air is purged out of the cooling system. When I changed my coolant, I kept adding coolant to the overflow tank after the engine cooled down and the level stopped falling. That's the easiest way to do it since our engines lack bleeder valves.

 

I changed out the coolant last year, and the levels have been constant in the overflow. Ive read where some suggest waiting until the engine is cold, removing the cap from the radiator and letting the car warm up; adding additional coolant if needed. I was told that this will clear out any air pockets. But, how safe is that???

 

It's safe as long as you're not driving the car without the radiator cap on. If your level is correct I doubt if you will be able to add any additional coolant.

 

should I jack upt he car at all to get any air moving through the line if its there? Also, would revving the car help clear it or no?

 

No jacking up is needed. Just make sure you turn the heater on so the coolant flows through the whole system. Revving helps the water pump move the coolant along faster and a faster warmup. I would rev it say 1500 rpm until the temp gauge reads the normal operating temp then let it idle a few before shutting the engine off and checking the coolant level.

 

i'll try that today along with my replacement install of the cracked fog light and my pedals. Ill let ya know how it goes...

..in the mean time, opinions are still welcome

 

ok. did that. nothing changed. The only thing that happened was that the overflow rasied a little.

next?

 

I apologize, I didn't take the time to see that you have an 02 model. The sound you describe is a water rushing type noise, or more like when you get water from a water dispenser with the big bottle over it, and it makes the gulping noise...am I right? Because that is what I think of when I read your post. I didn't take into consideration that it occurs when you have the A/C on, so I am curious, does it only occur when the a/c is on? Wether you accelarate or not? At this time, I suggest you look up Mike Jez on the forums. He might me able to help you since he used to work at Nissan as a tech. Other people to look up are NismoStar, and Bewstaddict. I hope I spelled their screen names correctly. As for purging the cooling system, I stated ealier that air in the heater core of a last generation 4cyl camry is common. The way I purge the cooling system is I raise the front part of the car up in the air, so that the filler neck of the radiator is the highest point. I start the car, turn the heater on and rev engine to about 1500 rpms for about 2 minutes and let it idle for a few minutes, and repeat (rev -> idle) until the cooling fans turn on. Plus I used a spill-free funel. I don't know if you want to try it again. I would ask the people I listed, what they think about your car problem first

 

The sound is kinda a muffled, "youve hit the bottom of your big gulp" (sucking throught a straw) noise. It happens when I have the heater on in the winter when I accelerate between like 1-3 gears. Its really not major then. Now in the summer time with the a/c on, it happens whenever I accelerate, in any gear. any further thoughts?

 

The only other thing I can think of is to make sure your A/C evaporator is draining when you are using the A/C. Water should srip from the paaneger side beneath the car when it's running. If it does not drain it means the water is sitting in the tray and sloshing around when you drive the car.

 

yeah, it frips when I use the A/C. But that would only effect the a/c, not the heat as well. Its got to be something in relation to the blower/cooling/heating unit. Somewhere in there, something is going on.

 

could it be anything to do with the power stearing or the water pump???

 

any more ideas?

 

Just checking to see if anyone else has anything to add. Problem is still there...

 

At first I was thinking along the lines of everyone else, that possibly you had air in the system or possibly a bad head or intake manifold gasket. But you state that your blowing out warm air in the winter, you have no coolant lose, and you mention nothing about your temp gauge being high, so that's kind of unlikey. I haven't done alot with air conditioners as of yet, so I don't remember alot of the specifics, but I wonder if Zero-duece's posts don't hold any merit. I do remember hearing that the a/c kicks on occassionally in the winter to prevent problems when you use it again in the summer, but for some reason I was thinking it only kicks on when your running the defrost or you are under very low loads, so it doesn't rob any power. Maybe I have it backwords and it kicks on during acceleration only, also when your defrost is on?

 

I dont like the air to be blowing in my face, so I use the front defroster when I heat and I also use it when its cool enough outside to where I dont need my a/c. So eah, when Im heating or when im not using the a/c, ive got the defroster on. but it also makes the noise with the a/c, if not more so.

 

The A/C compressor is on whenever you use the defroster. If you hear the noise when using the defroster and the A/C as well there must be something making noise in your A/C circuit. It could just be the freon traveling through the system making the noise.

 

That sounds logical. So, how do I, or can I, fix this?

 

I'm not sure how to diagnose or fix it because I have no experience with that conditon. If your A/C is working properly there is no need to tamper around with the system. I'm sure it bugs you whenever you hear it but if there are no problems caused by the noise I wouldn't worry about it. I would just say that if you only hear it when your compressor is pumping freon, it's definitely in your A/C system.

 

This isn't something you would just want to throw parts at without first confirming it's the culprit.
To replace this you need to open up your A/C system. (basically allow air into the vacuumed lines.)
To begin with you would need to recover the old freeon, then pull the evap off and replace it. (I haven't checked where ours are located, but if it's behind the firewall it could be a could be a 15 hour job, if not probably 1-2 hours) Then you need to vacuum the system down to (IIRC) 28 inches below atmospheric pressure. You will need a pump, hoses, gauges, and speial r134 fittings for this. Then after making sure there are no leaks you add the oil and freeon.
I've only done this a few times, so I'm sure I left something out.
IMO, "IF" you do find this to be the culprit and attempt to fix the problem at home I recommend that you DO NOT add freeon from autozone without having the system vacuumed down. The vacuuming process actually gets ride of all moisture and air in the system. Even one drop of water brings the boiling point way up. (the boiling point of freeon is way below zero. It needs to convert from a liquid to a gas state and from high pressure to low pressure during the cooling process) Also the moisture could potentially harm other items of your cooling system and will lower the effectiveness of the system.