I used the JHM oil cooler. SO aftermarket lines and setup. My buddy who works on the car and put it in thinks its the oil cooler as well. However, ive spoken to a few people and they dont have the whine, which led me to believe it wasnt the cooler. He plans on pulling the front end off and tyring to isolate the noise.
Does you shop have any idea what would make the cooler make the noise?
I have a JHM oil cooler and I get whine too. But mine is more rpm dependent so I thought it was just the alternator belt.
Could be the newer thermostats that JHM includes with the kit. The new ones might cause whine whereas the old ones might not whine
Are all you guys married or have long term gf’s?
HA! That HAS to be the source! Thank you!
took me way too long to get that
One does what one can…
The whine i have is more RPM dependent as well. Glad to know im not the only one. I asked JHM and Aroderick here and both of them said no wine. JHM there shouldnt be a whine and Aroderick said he doesnt have one so i assumed i was an isolated issue. I’d love to know WTF is causing it.
SAI system…pump stuck on?
I really wouldn’t rule out the PS system either…what’s your fluid look like?
Its hard to say what it is without hearing it in person. Koolade made some good suggestions and to be honest i cant see how the oil cooler would even cause a whineing noise. You did have to drop the motor to do the headers and some of the other work. The PS needs to be bled a few times before it will be silent. I would consider checking that and someone had posted pulling off the PS cap and looking for bubbles. That would be a good start
Cant say what it is, but at least u keep your car very clean on the inside:)
They aren’t sure what would cause it other than some strange resonance in the system. They used a stethoscope and went along the lines and it was most prominent at the cooler. I’m going to take my bumper off next week and do the same and see if that’s the same result I get. I need to take my bumper off anyway because they put it on the wrong way as everybody seems to do
Is the cooler mounted with rubber isolators? You could just be hearing resonance in the cooler. The PS cooler is up front as well…and the PS pump & oil pump both ride the same set of shafts. On the RS4, the way the main oil galleys are set up, even if there is restriction in the oil cooler/lines, oil would just flow through the oil/coolant block…
Do you have any audio clips perhaps? That may help us diagnose it…
Awesome, glad this is getting some suggestions.
Justin, i did drop the motor but that was back in Feb. The noise didn’t start until the cooler was installed in April. The only thing we did that weekend, was install the Engine cooler and the Intake manifold.
Im getting the car back today (hole in the heater hose going to the firewall) so i will check to see if i see any bubbles in the power steering fluid. SAI pump is interesting theory. How do i go about checking that? i thought my JHM tune got rid of the SAI (or the use of it anyway)
Koolade, on my car i have the Oil cooler, Trans cooler, and Power steering cooler on mounted up front. I dont remember if there is rubber between (i dont believe so). Ill look into that as well. Ill keep this updated.
LMAO thanks. I do try to keep it clean. That must have been just after a weekend wash because the mat is super clean.
I have the rubber isolators on mine so this could possibly be the cause. Also if the cooler isnt secure you might here this humming
No no, you definitely want some type of isolation. Even if it’s just the little rubber pads/zip ties… Where I was going with that, is if someone is using a stethoscope or the screwdriver method to isolate engine noises, having the heat exchangers hard-mounted to one anther means you’re going to pick up noises from all the other components it’s attached to (i.e. PS cooler)…
Sorry about that…I thought you were having the issue and I got you and the OP mixed up… Either way, isolation = yes ;D
[quote=“FastEddie,post:41,topic:7271”]
I’m just spit-balling with the components that reside on the passenger side. The SAI is pretty obvious when it’s on, so I really doubt that’s it. I brought it up as perhaps it would trigger a light-bulb on your end if there was an issue, that’s all.
A couple more theories:
-Since this is on an S4, you have the JHM block-off plate/braided oil lines. When you routed the oil lines, are any of them making contact with anything on the engine?
-You also had to remove the alternator to install that plate…did you double-check the coolant lines back there, and more specifically, the electrical connections to the alternator?
-When you put the JHM 6-rib pulley on the alternator, did you remove the little aluminum spacer that sits on the shaft? (Or is that just an RS4 thing? I thought we shared alternators for the most part - someone correct me if I’m wrong)
-Was the aux radiator already removed prior to this? If not, are the coolant lines properly routed now that the rad & coolant/oil block have been removed? I ended up sourcing a couple different parts just to clean up those coolant lines…I know there is room for error in there.
[quote=“aroderick56,post:43,topic:7271”]
I went back and re-read my blabbering and this resonated with me (pun intended). OP, Is the oil cooler actually secured?
[quote=“koolade9,post:47,topic:7271”]
Oil cooler is mounted to the front crash beam. We made a bracket and mounted it. Im going away for a few days so when i get back ill def dive into this more!