: Is this the power steering cooler?



JDB
06-21-11, 10:04 AM
While changing the oil recently, I noticed the one line is wet and I don't think it's motor oil from the changes. Im good about keeping things clean. Finally get an appt with a loaner at the dealer and they tell me the power steering isn't leaking. They ran a dye through it and pressure tested. I said that I wasn't sure if it was power steering... just told them the location of the hoses and what looks to be a tiny cooler section. I just assumed it was. I didnt look when changing the oil since I didnt have a lot of time and just assumed the dealer could handle this since it still under CPO...why spend time wrenching on this car yet. I've only had this car a little over a year and I've only installed the exhaust, intake, shifter and CAGS delete...along with oil changes and wheel swaps. And the dealer has done a bunch of the common issues/failures under CPO including the rear diff, rad, NAV (second time will be tomorrow when it shows up), and a bunch of other things. So, Im still a noob.... and this is the first time the dealer just didn't throw parts at it. And my car is still at the dealer until the new NAV comes in, since the original had chipped buttons when I bought it and the replacement had some funky marks on the lower screen and one of the dots on the right side wasn't inline with the others ...talk about poor quality control and why let the car go out with it??

So, is this the power steering cooler? If not, what is it? You'd think a cooler would be out front.


http://www.cadillacfaq.com/faq/answers/img/under/Vu05.jpg

darkman
06-21-11, 10:17 AM
The hoses in the picture are the power steering hoses. The cooler itself is located in front of the radiator behind the grill.

http://www.cadillacfaq.com/faq/answers/steeringcooler/index.html

JDB
06-21-11, 11:33 AM
Thanks. I should've kept digging around the FAQs.

Im taking the FAQ pic above to them today to show them what I'm talking about. I know mine is leaking, even the reservoir dropped a little recently since the last time I checked fluids in the engine bay.

It always seems like there is a loss of communication with advisors. It would just be easier to talk to the techs who know the cars. It doesn't help that I don't know much yet either, but you'd think they'd be trained as well as get to know the cars better as they service them. Need Lindsay to be closer!

HAMSTAR
05-04-13, 09:37 AM
Does anyone know how much power steering fluid I need to buy if I'm gonna replace it?

PISNUOFF
05-04-13, 09:52 AM
Complete flush is about 1 qt. I buy two Redline synthetic quarts and have a lot left over.

darkman
05-04-13, 09:53 AM
The system capacity is not provided in the Service Manual, but is more than a pint and less than a quart. However, if you flush the system by running the engine and letting fluid drain at the same time (the method outlined in the Service Manual) it can consume up to four quarts.


(Since I do mine annually, I just drain it, fill it, and then refill it after running the motor long enough to eliminate any air.)

HAMSTAR
05-04-13, 10:23 AM
Thanks guys. I'll go with 1 quart for drain and refill.

HAMSTAR
05-04-13, 06:53 PM
The system capacity is not provided in the Service Manual, but is more than a pint and less than a quart. However, if you flush the system by running the engine and letting fluid drain at the same time (the method outlined in the Service Manual) it can consume up to four quarts.


(Since I do mine annually, I just drain it, fill it, and then refill it after running the motor long enough to eliminate any air.)

Darkman, I was tryin your method and wonder if I could get some pointers on how to refill. This is te first time I've done this. I dropped the power steering fluid cooler, drained the fluid from the lines and also tipped the cooler to drain all the fluid from the cooler. I then filled up the reservoir, but it didn't take much. Maybe 1/5 quart. I then ran the engine with the cap off the reservoir and turned the steering wheel slightly either direction. The PS groaned considerably. I then turned the engine off (was only on fr about 40 seconds), and found that the PS fluid had bubbled up to the level I the cap and was about to overflow. Had a lot of bubbles in it. Am I supposed to do the refill/start motor/ turn wheel/ shut off motor steps with the cap on or off?

I anyone else knows, please chime in! Thanks!

darkman
05-04-13, 07:45 PM
I just run the engine with the cap off and keep topping it off if the fluid level drops. It sounds like you may have an air pocket. It should go away by running the motor, but if it does not you can loosen the return line at the pump to force some air out. The problem with doing this is that you almost need an assistant to kill the motor the instant the air to turns to fluid or you can get a lot of spillage.

HAMSTAR
05-04-13, 08:50 PM
Thanks darkman. What I wound up doing is I had my wife turn the car over and turn the wheels side to side while I watched. I would then have her kill the engine, at which point I would wrap a rag around the reservoir to sop up the fuzzy PS fluid that would bubble out. There would also be big bubbles.

Interestingly, every time she killed the engine, I would here a loud pfft sound like air releasing. Do you think that's the PS pressure relief valve? Figurin it was the relief valve, and that the cap didn't have to be off the res to release air, we then continued the procedure a couple times with the cap on.

After about five or six cycles, the noise from te PS motor was dramatically diminished. I just took it for a drive and it was silent.

Really curious about the pressure relief valve...

darkman
05-04-13, 09:05 PM
See attached.

HAMSTAR
05-05-13, 12:07 AM
See attached.

That was super interesting. Thank you, darkman. Wish I knew your real name, lol.

The document doesn't say anything about a pressure relief valve, though...[COLOR="Silver"]

thebigjimsho
05-06-13, 07:03 AM
I guess we're over the Hamster comment, haha...

HAMSTAR
05-06-13, 07:18 AM
I guess we're over the Hamster comment, haha...

For reals. Darkman can call me hamster any time. Anyone else can expect a visit IRL, lol

thebigjimsho
05-06-13, 07:20 AM
Good stuff.

JDB
05-06-13, 03:53 PM
Ha! Funny my old thread comes back up... took another trip for dealer to find that power steering line was leaking. And finally fixed under CPO. And when I double checked, I found the hard lines attached to the hose wasn't oriented correctly and came very close to rubbing the front sway bar. Freaking dealers... so, I moved it best I could in that clip and put some hard rubber hose that I zip tied to the hard line to protect it from any possible rubbing from the sway bar. Morons...

(Not so much of a noob now...) I was just under there recently installing headers and motor mounts, and the line is fine and barely any rub on the rubber. Maybe an excuse to buy sway bars??? Probably easier to pull the sway bar out than pull that power steering line, but probably could use a flush 2 years later.

Hhmmmm...