Moanin' Corona - Toyota Nation Forum : Toyota Car and Truck Forums


» Auto Insurance
» Featured Product
Advertisement
Wheel & Tire Center

Go Back   Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Passenger and Sports Car Forums > Corona Forum

Corona Forum Specific discussion of the Toyota Corona

ToyotaNation.com is the premier Toyota Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 11-16-2008, 12:15 PM   #1 (permalink)
Registered User
 
Join Date: Nov 2008
Location: Nevada
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View fantum's Photo Gallery
Moanin' Corona

I have an '80 Corona Deluxe that my daughter drives. The power steering has been doing a lot of moaning lately, particularly when cold, so I replaced the pump with a rebuild and flushed the system till the fluid ran clear. The problem is that the steering continues to make the moan-and-groan sound typical of a system low on fluid, even though it's topped off. The sound increases with engine revs and steering wheel rotation. What I'm wondering is if there's anything specific to the Corona that would aggravate the problem? I'm suspicious there may be air trapped in the fluid cooler (better term?) or the new pump, in which case, how best to get it out? I've done the basic bleed procedure of turning the wheel back and forth but haven't seen any improvement. My Clymer manual hardly addresses the PS system.

Thanks to all for looking -- any assistance in debugging this bugger is GREATLY appreciated!
fantum is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-21-2008, 12:21 PM   #2 (permalink)
Corona is gone.
 
79Corona's Avatar
 
Join Date: May 2006
Location: Virginia
Posts: 859
Blog Entries: 5
Thanks: 96
Thanked 7 Times in 7 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
View 79Corona's Photo Gallery
I have the exact same problem and was wondering if pump replacement was a solution. Guess it's not. I hope someone more knowledgeable shows up, because I'm not sure what else it could be.
__________________
Bryan
86 Hilux LE (blue)
Other Toyotas : 79 Corona DLX sedan (Mint green), 89 Corolla DX sedan (wine), 88 Camry V6 LE sedan (blk), 86 Hilux std bed (wine), 82 Celica GT hatchback (bwn), 78 Celica GT coupe (slvr), 76 Corolla SR-5 coupe (wht)
79Corona is offline   Reply With Quote
Old 11-21-2008, 12:53 PM   #3 (permalink)
Registered User
 
Join Date: Nov 2008
Location: Nevada
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View fantum's Photo Gallery
Sorry to hear we share the problem, Bryan -- but I appreciate the company! Seems like that should improve our odds of finding a solution.

I've opened a similar thread on the Hardcore Tech and Competition forum (hope double-posting is OK!) and had no response there either. I'm a newbie, so let me know if there's a better generic tech discussion area.

I'll keep looking off-forum also and will post with anything worthwhile.
fantum is offline   Reply With Quote
Old 11-22-2008, 01:10 PM   #4 (permalink)
bilt not bot
 
Join Date: Mar 2008
Location: seattle
Posts: 399
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View shonuff's Photo Gallery
moaning is typical of low fluid or low flow. too long of either can damage the pump and it will always moan.



another thing to check is the filter screen in the bottom of the resivour, its fairly common for it to become clogged.


it could also be air trapped in the system. the proper way to bleed a yota PS system is to get the front wheels off the ground, start the car and turn from lock to lock 30-50 times. dont force it at lock just turn till it stops then go the other way.
__________________


www.youtube.com/nuffbilt
shonuff is offline   Reply With Quote
Old 11-23-2008, 02:31 PM   #5 (permalink)
Registered User
 
Join Date: Nov 2008
Location: Nevada
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View fantum's Photo Gallery
I think you're on to something here, shonuff. I pulled off the reservoir (basically a crimp-sealed metal "can" with a lid) to get a better look inside and found **pieces** of what was once a screen at the bottom. I'm reading this to mean that there may be other bits of screen clogging circulation elsewhere in the system -- new pump, lines, steering box. Since the screen is already mangled, I have no idea what it should look like and can't tell if any of it's missing. How and where was it supposed to be attached, anyway?

Guess I get to drain and dismantle the whole freakin' system. Oh joy.
fantum is offline   Reply With Quote
Old 11-23-2008, 07:36 PM   #6 (permalink)
Registered User
 
Join Date: Nov 2008
Location: Nevada
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View fantum's Photo Gallery
Back to square one. I pulled the lines loose and blew them out but didn't find any screen or blockage. Put the pieces back together, bled the system, cycled the steering with the car on stands **at least** 50 times and noticed no difference in the groaning sound from cycle #1 to #last. On the ground, the car pretty much sounds as it did before.

The groaning is definitely coming from the pump vicinity, not the steering box. Guess I could try yet another pump . . .


Last edited by fantum; 11-23-2008 at 07:37 PM.
fantum is offline   Reply With Quote
Old 11-23-2008, 11:48 PM   #7 (permalink)
bilt not bot
 
Join Date: Mar 2008
Location: seattle
Posts: 399
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View shonuff's Photo Gallery
it could also be the fluid, yota's are supposed to run type F tranny fluid in the PS

ive heard that PS fluid could make it groan, i use PS fluid and i have a lil groan but nothing major.



does kinda sound like the pump might have issues. a lil bit of screen could really F the pump i bet.
__________________


www.youtube.com/nuffbilt
shonuff is offline   Reply With Quote
Old 11-24-2008, 08:06 AM   #8 (permalink)
Registered User
 
Join Date: Nov 2008
Location: Nevada
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View fantum's Photo Gallery
I'm using a Dexron-type ATF, which should comply with the recommendation. Should be plenty fresh at this point, too.
fantum is offline   Reply With Quote
Old 11-24-2008, 08:16 PM   #9 (permalink)
Official TN Member
 
verlaryder's Avatar
 
Join Date: Mar 2008
Location: salem, OR
Posts: 818
Gameroom cash: $105260
Thanks: 1
Thanked 51 Times in 44 Posts
iTrader Score: 0 reviews
View verlaryder's Photo Gallery
ALL Toyota power steering pumps - from the 1973 Toyota Corona Mark II to the 2009 Toyota Camry take DEXRON Automatic Transmission Fluid.

Type F fluid is solely for the 1982 and earlier Toyota automatic transmissions,
never for a Toyota power steering system.
verlaryder is offline   Reply With Quote
Old 11-26-2008, 04:28 PM   #10 (permalink)
Senior TN Member
 
Doctor J's Avatar
 
Join Date: Apr 2006
Location: Long Beach, California
Posts: 2,801
Gameroom cash: $449190
Thanks: 14
Thanked 141 Times in 131 Posts
iTrader Score: 0 reviews
View Doctor J's Photo Gallery
I have had similar noise in my 79 Supra; turned out to be the high pressure hose bracket was lose and transmitted vibration to the car, which show up as noise.
Doctor J is offline   Reply With Quote
Old 11-27-2008, 01:32 PM   #11 (permalink)
bilt not bot
 
Join Date: Mar 2008
Location: seattle
Posts: 399
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View shonuff's Photo Gallery
im learned now on the fluid thanks, i was told that by somebody and never verified it myself.
__________________


www.youtube.com/nuffbilt
shonuff is offline   Reply With Quote
Old 11-28-2008, 12:53 PM   #12 (permalink)
Corona is gone.
 
79Corona's Avatar
 
Join Date: May 2006
Location: Virginia
Posts: 859
Blog Entries: 5
Thanks: 96
Thanked 7 Times in 7 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
View 79Corona's Photo Gallery
Quote:
Originally Posted by shonuff View Post
it could also be the fluid, yota's are supposed to run type F tranny fluid in the PS

ive heard that PS fluid could make it groan, i use PS fluid and i have a lil groan but nothing major.



does kinda sound like the pump might have issues. a lil bit of screen could really F the pump i bet.
The book says Dextron.
__________________
Bryan
86 Hilux LE (blue)
Other Toyotas : 79 Corona DLX sedan (Mint green), 89 Corolla DX sedan (wine), 88 Camry V6 LE sedan (blk), 86 Hilux std bed (wine), 82 Celica GT hatchback (bwn), 78 Celica GT coupe (slvr), 76 Corolla SR-5 coupe (wht)
79Corona is offline   Reply With Quote
Old 12-10-2008, 05:13 PM   #13 (permalink)
Registered User
 
Join Date: Nov 2008
Location: Nevada
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
View fantum's Photo Gallery
To update: I just replaced all the original hoses in hopes there was a leak somewhere. While I had the system apart, I tried to snake-out the "cooler" section of tubing in front of the radiator in case there was a blockage. Problem here was that no matter what size wire I used, I couldn't get it around the bend and out the other end. With everything back together, I filled the system (threw in a bottle of steering additive), bled it thoroughly . . .

AND IT STILL MAKES THE SAME NOISE

I'm thinking steering box now, maybe having some resistance or restriction that's straining the pump and causing the groaning. But when the car was on stands, I checked the steering action before and after filling the system and nothing seemed odd. I'm also wondering if resistance somewhere in the steering linkage (ball joint, etc.) could make the pump strain and complain?

Last edited by fantum; 12-10-2008 at 05:15 PM.
fantum is offline   Reply With Quote
Old 12-14-2008, 05:43 PM   #14 (permalink)
Corona is gone.
 
79Corona's Avatar
 
Join Date: May 2006
Location: Virginia
Posts: 859
Blog Entries: 5
Thanks: 96
Thanked 7 Times in 7 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
View 79Corona's Photo Gallery
Thanks, don't know what to say. Mine hasn't changed either.
__________________
Bryan
86 Hilux LE (blue)
Other Toyotas : 79 Corona DLX sedan (Mint green), 89 Corolla DX sedan (wine), 88 Camry V6 LE sedan (blk), 86 Hilux std bed (wine), 82 Celica GT hatchback (bwn), 78 Celica GT coupe (slvr), 76 Corolla SR-5 coupe (wht)
79Corona is offline   Reply With Quote
Old 12-15-2008, 12:35 PM   #15 (permalink)
Senior TN Member
 
Doctor J's Avatar
 
Join Date: Apr 2006
Location: Long Beach, California
Posts: 2,801
Gameroom cash: $449190
Thanks: 14
Thanked 141 Times in 131 Posts
iTrader Score: 0 reviews
View Doctor J's Photo Gallery
You may try trans-x "tranny tune" up fluid
Also rotate the drive belt 180 degrees to change its direction of rotation.
Doctor J is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Passenger and Sports Car Forums > Corona Forum

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 11:00 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
ToyotaNation.com is an independent Toyota/Lexus enthusiast website. ToyotaNation.com is not sponsored by or in any way affiliated with Toyota Motor Sales, USA, Inc. The Toyota, Lexus and Scion names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.