100 Series Power Steering Whine, Reservoir Bubbles and Antifreeze Leak?

[valdi2012]

UPDATE: After pressure bleeding, I decided to run the engine to see if any pin holes would leak. First few moment the vane pump was whining, especially when turning wheel and frothy reservoir bubbles. As it warmed up the whining stopped as well as the tiny bubbles in the reservoir. Topped the reservoir off as more fluid was being circulated. 15 minutes in, the whining (while turning) and reservoir bubbles stopped. Just finished a test drive and once parked, I turned the wheel lock to lock, no whine! I don't know what happened/changed. Maybe the sub 0 temps opened up potential leaks. Its 33 today.

I do know the the rack will need replacing and there's a small coolant leak on the oil cooler. Hope it lasts until spring. Also going to run AT-205 through the PS system tomorrow.

 

[valdi2012]

It's leaking, right? That's where the air is getting in.

Yes. I see that now and makes sense.

 

[baltistyle]

I guess I was assuming the leak was fixed with all this work?

 

[Dirt J]

AT-205 bought me some time. Hope it does for you too!

 

[valdi2012]

I guess I was assuming the leak was fixed with all this work?

No. Rack is leaking from boot which was causing issues with vane pump priming. Thought I had a leak in a line but I can hear air (bubbling) being drawn into the rack.

 

[valdi2012]

UPDATE: AT-205 added and NO leak all week! Even the coolant leak stopped. My baby doesn't like cold weather, hopefully will last until April. Thank you for all the input and advice.

 

[Aracobuilt]

UPDATE: AT-205 added and NO leak all week! Even the coolant leak stopped. My baby doesn't like cold weather, hopefully will last until April. Thank you for all the input and advise.

That's great to hear. I have heard good things about AT-205. Scotty Kilmer swears by it. How much of it did you pour into the reservoir?

 

[valdi2012]

That's great to hear. I have heard good things about AT-205. Scotty Kilmer swears by it. How much of it did you pour into the reservoir?

Thank you for reminding me...added 1.5 OZ directly into the reservoir while running, and let it idle for 15-20 minutes. Drove around running errands for another 40 minutes.

 

[Aracobuilt]

Thank you for reminding me...added 1.5 OZ directly into the reservoir while running, and let it idle for 15-20 minutes. Drove around running errands for another 40 minutes.

Thanks, I might do that to an LS430 that I have. It has very minor seepage by one of the rack boots.