Boomhower
Well-Known LVC Member
First off let me say that I have read numerous other threads relating to this topic. I have read all the other opinions on HCF pumps, fans, cracked reservoirs, degauss caps, thermostat's, etc.....
Let's see if I can explain this enough to give everyone the information they need right off the bat.
I have an 02 V8 LSE. 30,xxx miles. Over the past couple of days, my wife and I have been hearing a loud noise under the hood during normal driving conditions. It's sounds like the fan is getting ready to take flight. Have never heard the fan kick on from inside the car before, only standing outside. My wife and I both work at the same place, so we ride together each day.
On the drive into work this morning, everything was fine.
My wife took the car out at lunch to run an errand, and about five min. into the drive she heard an unusual noise. She turned the radio and AC off to get a better listen to the sound and it stopped. Turned the AC back on and it made the same noise (speed 40 MPH). About 2 min. further down the road, she notices the temp. gauge was spiked. Not all the way to the red mark, but covering the H, in between the red mark and the 3/4 mark. A few min. later arriving at her destination, the temp. gauge was still spiked in the same place. She probably wasn't even in the store 10 min. and came back out, fired the car up and drove the 10 min. back to work. The car was fine on the return trip. Normal temp, half way on the gauge. Never threw a check engine temp warning, nor experienced the feel of reduced engine power or the warning of reduced engine power on the message center.
On the drive home, I was driving trying to re-enact the noise. I started off with the AC turned off. About 5 min. down the road, turned the AC on and it made the same noise (speed 40 MPH). Not really like a gurgling as described in other threads, but more like the sound of ice in a blender. Had more of a pop/click to it. The noise was coming from behind the dash on the driver's side. Could hear it plain as day, not a muffled tone. Kinda made me think it was interior instead of exterior. The temp. gauge stayed at the half way mark the entire 45 min. drive home (average speed 60 MPH) and I wasn't able to re-enact the noise again by turning the AC on or off. Still haven't been able to all night, even running at 30 and 40 MPH.
The temp spike doesn't concern me as much as the noise we heard. As I stated before, we haven't experienced any overheating issues in the past couple of days nor on either drive after the engine was shut off from the first overheat.
My question is, has anyone else had this problem or have had experience with this sound? What should be checked first? Sorry for the long read and thanks in advance guys.
Let's see if I can explain this enough to give everyone the information they need right off the bat.
I have an 02 V8 LSE. 30,xxx miles. Over the past couple of days, my wife and I have been hearing a loud noise under the hood during normal driving conditions. It's sounds like the fan is getting ready to take flight. Have never heard the fan kick on from inside the car before, only standing outside. My wife and I both work at the same place, so we ride together each day.
On the drive into work this morning, everything was fine.
My wife took the car out at lunch to run an errand, and about five min. into the drive she heard an unusual noise. She turned the radio and AC off to get a better listen to the sound and it stopped. Turned the AC back on and it made the same noise (speed 40 MPH). About 2 min. further down the road, she notices the temp. gauge was spiked. Not all the way to the red mark, but covering the H, in between the red mark and the 3/4 mark. A few min. later arriving at her destination, the temp. gauge was still spiked in the same place. She probably wasn't even in the store 10 min. and came back out, fired the car up and drove the 10 min. back to work. The car was fine on the return trip. Normal temp, half way on the gauge. Never threw a check engine temp warning, nor experienced the feel of reduced engine power or the warning of reduced engine power on the message center.
On the drive home, I was driving trying to re-enact the noise. I started off with the AC turned off. About 5 min. down the road, turned the AC on and it made the same noise (speed 40 MPH). Not really like a gurgling as described in other threads, but more like the sound of ice in a blender. Had more of a pop/click to it. The noise was coming from behind the dash on the driver's side. Could hear it plain as day, not a muffled tone. Kinda made me think it was interior instead of exterior. The temp. gauge stayed at the half way mark the entire 45 min. drive home (average speed 60 MPH) and I wasn't able to re-enact the noise again by turning the AC on or off. Still haven't been able to all night, even running at 30 and 40 MPH.
The temp spike doesn't concern me as much as the noise we heard. As I stated before, we haven't experienced any overheating issues in the past couple of days nor on either drive after the engine was shut off from the first overheat.
My question is, has anyone else had this problem or have had experience with this sound? What should be checked first? Sorry for the long read and thanks in advance guys.
. I took it to the service center of our local Carmax, but before I did I replaced the original intake and filter. Just so I didn't cause any warrenty issues with it. Once I had the intake on and before I put the top cover back on the motor, I had the wife fire the car up. First with the AC off, then turned on. I had a better view of the fan with the cover off and it was working in both instances. Was I looking at the right fan? Is there another smaller fan somewhere else?