AstroSafariVans.com

The premier site for Astro and Safari van information
It is currently Mon Nov 20, 2017 7:44 am

All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: Friction modifiers in P/S pump?
PostPosted: Thu Nov 09, 2017 10:45 pm 
Offline
I am merely driving my van
I am merely driving my van

Joined: Wed Nov 02, 2016 8:25 pm
Posts: 24
So I understand Ford gets good results in quieting P/S pumps by adding a friction modifier. I was explaining my intermittent P/S assist loss to a friend who manages a fleet.
He thought I might try the friction modifier before replacing the pump. Already power flushed it as well as new steering gear box.
my issue brakes/steering difficulties has always happened after several miles or hours on bumpy/twisty slow FS roads. Overheating?
Maybe a better cooler too?

Thoughts?


Attachments:
thumbnail_IMG_20170226_162224.jpg
thumbnail_IMG_20170226_162224.jpg [ 160.84 KiB | Viewed 50 times ]
PART_1500392697133.jpg
PART_1500392697133.jpg [ 904.8 KiB | Viewed 50 times ]
PART_1500392762937.jpg
PART_1500392762937.jpg [ 729.98 KiB | Viewed 50 times ]

_________________
Recovering hoarder
Top
 Profile  
 
 Post subject: Re: Friction modifiers in P/S pump?
PostPosted: Fri Nov 10, 2017 4:43 am 
Offline
I sleep in my van

Joined: Sun Jan 13, 2008 5:23 am
Posts: 551
Hi,
I have 2003 AWD Astro with 130,000 miles.
I remove the OEM metal tubing from behind the bumper that was the GM low cost cooler for power steering fluid.
I installed a proper hayden cooler behind the grille and connected to steering hoses to properly cool the steering fluid.
I was having poor power assist at low speed steering effort was high. My 2003 Astro also has hydro boost brake assist which uses power steering pump to pressurize air in an accumulator to act as power brake assist via check valve when you push on brake pedal.

This weekend, I found a loose fitting on the high pressure line going into hydr-o boost, Use flare wrench 16 mm or so to snug fittings.

AP


Top
 Profile  
 
 Post subject: Re: Friction modifiers in P/S pump?
PostPosted: Fri Nov 10, 2017 4:51 am 
Offline
I get chills without my van.
User avatar

Joined: Sun Aug 11, 2013 2:42 am
Posts: 90
Location: Ft. Lauderdale, Florida
My 2000's intermittent PS issues turned out to be a sticking valve in the pump.
Changing valves did not fix the problem..
A new pump fixed the problem.

My 92 van had heat and cavitation issues..
A cooler and synthetic fluid fixed the problem.

_________________
-
Image
2000 Chevy Astro LS AWD | 31" LT265/70R17 Tires | 8" LIFT | 10" TOTAL
92 Chevy Astro Shorty | V8-350
http://www.CruisinSouthFlorida.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group