I have a whine noise that I thought was the transmission, as it changes pich with shifts...automatic. Well I took it to the trans shop and they say not the trans. They think it's comming from the rear of the engine or under the dash. I did my own investigation and it seens the noise is in the heater core. what do you think of that? what would cause it? thanks.
sounds like you have some sort of restriction. Water itself rarely makes an audible sound, you probably have air in the system as well. I've heard that after replacing a heater core or after refilling coolant... the only other time was when I had a leak. also, my AOD has made this sound when low on tranny fluid or when it has too much. took a bit to get my new dipstick right. der... can't remember the word. anyway air bubbles get in the tranny fluid, makes for unstable pressure. also occurs to a certain degree if you have a leak in a tranny line.
I... I disconnected the heater core and just looped it back to the motor. The noise is bearly there but it's there at around 2000rpms. the heater core was acting as an speaker. I wonder if it has do with an imbalance in the motor? or if I have a bad bearing in the motor? Anyone heard of anything like this? Thanks so far.
hey just a question? is your radio on when you hear this noise? i've been around cars that the ignition system makes a whine noise through the speakers. just a thought.
sup I have the same problem with my galaxie... i posted on another forum and heres what they had to say so far If it is truly resonating through the heater core I would suspect a bearing in your waterpump, 'though I've never experienced something like that. I did have a muffler that rusted inside and as you drove it the material would sart interupting the flow and it started making a jet sound so loud you thought an airliner was getting ready to land on top of you. quote: -------------------------------------------------------------------------------- I disconnected the heater core and just looped it back to the motor. The noise is bearly there but it's there at around 2000 rpms -------------------------------------------------------------------------------- I assume that this is a FORD? If the heater core has been replaced, it is most likely that the insulator was damaged and/or torn and the tech decided not to replace it (it is available for service). With the water being pumped through it (pulsations) it probably created a howling noise. One you disconnected the water supply, vehicle vibration alone is most likely causing it to vibrate and make the noise at only a certain RPM now. It's either that or ghosts...
yup Get this I unhooked the heater core for about 4days...no noise. I hooked it back up and you still couldn't hear it. I drove 8 miles home from work and by then at around 2000rpm you could hear it slightly at times. parked it and it cooled 4hrs. later drove it and it was like old times....that exact noise that you've heard was back. This for me says no to the water pump theory, the noise wouldn't come back gradually. Last year I was the tech who put in a new heater core. The insulator between the fire wall is fine, but maybe I recall a less then prfect outcome for the little pads that wedge the core in place. Perhaps a fin is loose as someone suggested to me. I reached down and put my hands on everything when the noise was loud and clear...I only felt the vibration in the heater box. It's strange and annoying. My girlfriend said she could still hear it in the last post but I'm no longer convienced after hooking it back up
