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Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 101
Reg: 07-2006

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Monday, April 13, 2009 - 08:55 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Allright,

My 91 1jz is really starting to give me the poops good and proper. The LCD for odometer has shat itself (4wks ago), I had an internal blockage in the master cylinder (2wks ago) causing fluid to go to my front brakes but not return resulting in a braking setup having no other purpose than skids. Now, this morning, I went to get into my car and have found a lovely pool of what looks like Dex II on my nice newly stenciled driveway. Hip Hop Hooray....


Enough of the cynicisim - Over the past 3-4 weeks, when cold, my grarbox has been holding gears very badly. i.e. pull left out of my driveway, accelerate smoothly and easily and it would rev to about 5500rpm before changing gears. If I only give enough throttle to rev to say 4500-5000rpm, the car will hold first and not change to second. I mean it will change eventually, however it does take what feels like an eternity. maybe 5-7seconds.

I still need to jack the car up and attempt to find the source of the leak. I have had a small leak from my power steering and a tiny tiny leak from tappet cover gasket for some time so finding the source of a new leak is going to be a dirty difficult prick of a job.

Anyone had a gearbox problem like this before and anyone have any idea where gearboxes commonly leak from? The lowest point the leak drips from is about 6inces toward the drivers side from centre off the steering crossmember.

Cheers,
Nuf.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 103
Reg: 07-2006

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Monday, April 13, 2009 - 09:37 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Well, i've had a quick look and a test drive. The grarbox fluid is at the same level it has been at for 3 years (yes i've flused it several times). But the power steer fluid seems to be going down a lot quicker. Oh well. Power steer it is.


Anyone know a good place or person in Brisbane to see about power steering? I have a feeling the rack itself will need rebuilding/replacing.
Shane Haverkamp
TryHard
nsw
soarer TT

Posts: 164
Reg: 10-2007

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Monday, April 13, 2009 - 05:30 pm, by:  Shane Haverkamp (Havabeer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

if you can give the engine bay a bit of a degree's and a wipe down (where you can see the power steering.

then have a mate turn the wheel with engine running

BE VERY CAREFUL AROUND MOVING BELTS PARTS ETC

and see if you can see the fluid squirting out from any where. or notice it pooling/dripping. just trace around the power steering lines.

could help spot the leak rather then try and replace the whole bit. or if you get pretty desperate. try one of those "stop leak" in a bottle products
Michael Keen
Goo Roo
nsw
Soarer TT

Posts: 1734
Reg: 10-2007

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Monday, April 13, 2009 - 05:34 pm, by:  Michael Keen (Spoilt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Shane Haverkamp wrote on Monday, April 13, 2009 - 05:30 pm:

try one of those "stop leak" in a bottle products




do not try this, it will only make it worse they are just fix it right the first time.
Nathan Hlad
TryHard
NT
soarer jzz30 tt

Posts: 219
Reg: 09-2008

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Tuesday, April 14, 2009 - 05:22 pm, by:  Nathan Hlad (Jackpot) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

try one of those "stop leak" in a bottle products
^^very true^^

i had a pws fluid leak got quoted 1500 then decided to patch it after if started leaking again took it back and got quoted 2200 !

definately get it done right the first time !!
Rob Rojo
Goo Roo
NSW
Soarer TT

Posts: 1902
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Tuesday, April 14, 2009 - 09:20 pm, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I am stripping a complete Auto TT so if your after any parts let me know.
Aaron Casey
DieHard
nsw
'94 jzz30 gttl, 2 mini's one supercharged :-)

Posts: 931
Reg: 08-2005

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Tuesday, April 14, 2009 - 09:37 pm, by:  Aaron Casey (Blownminiturbo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

yeah my mate tried it in his power steering in his commodore and it seized the rack cause it was so thick.... thats about the only difference its harder to leak if its thicker lol

so as shane said degrease everything that is oily and then take it for a drive and check it again to see if its coming from the rack or a pipe or the pump. might also find it could be coming from a transmission cooler hose so check that too.

if you are competent you can fix whatever it is by all means go ahead and try but if you dont feel confident take it to a steering specialist or even a general mechanic that you trust should put you in the right direction
David Ward
TryHard
Victoria
3.0 TT & 2.5 TT

Posts: 246
Reg: 10-2006

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Friday, April 17, 2009 - 12:47 pm, by:  David Ward (Djwtoyota) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hi Russel,
there are companies that can recondition steering racks.
Some do changeover, others you would need to send so suggest you take up Robs's offer of his 2nd hand one and keep the old one for future or just send your old one off to be reco'd.
Don't muck around with goey oils to stop leaks...do it properly otherwise you'll just keep having trouble,
cheers David
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 105
Reg: 07-2006

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Sunday, May 03, 2009 - 07:15 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yeah....No.... I'm not using stop leak. As you'll read, I think I've tried to do things right but I've come to a point where I am proper stuck. I need help.

Couple of weeks ago, steering intermittently started to get heavy at idle. No real fluid leaks at this time. 1 week ago, the seal where the steering column enters the rack let go and lost all fluid. Steering is now unbearably heavy. The following day, I removed my rack and took it to a mob in Bris to rebuild it - $409 with new rack mount bushes. While the rack was out, I ran a service kit through my pump. dismantled the resivour cleaning the gause filter in the bottom. Also, I replaced all hoses except high pressure lines.


Now today, After rebuiling the pump and getting the rack back, I refit everything. After refilling system and venting all air bubbles, I fired the car up. Instantly I knew something was wrong because the pump was whining and ZERO power steer. Removed, opened and inspected pump. Found I had put the thing that goes around the vanes in upside-down. Refit pump, tested. No whining, pump 'appears' to opperate correctly but steering still heavy. Steering seems to be better.....ish..... There is definitly some form of power steering there but assistance is weak.

Pulled the pump out again. This time, I rotated the part that sits on top of the vanes 180deg (not flipped - spun). I cant see how this could effect anything as it looks identical either way it is installed.

I then realised that I had left the wires off the rack for the 'force-feedback' bizzo. Reattached them and no difference.

I have zero leaks. I am confident I have the pump together properly as the last thing I did tonight was to plum the resevior return line to some hose and fed that to a bucket, block off the return inlet to the reseviour and I filled the resevior to the brim. Started the car for NO MORE THAN 1 SECOND (seriously) - pretty much turn key, engine start, turn key, engine stop and the reseviour was almost fully empty - could see the fluid sitting right at the filter in the bottom. So the pump is definitly pumping. and there are no air pockets.

I have seen in another post a screen shot of a pump breakdown for the V8. Does anyone have one of these for a 91 1jz??

What the hell else can it be??? Can people please give me ideas of what to look at/investigate.

Any and all help will be appreciated.
Shane Haverkamp
TryHard
nsw
soarer TT

Posts: 178
Reg: 10-2007

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Sunday, May 03, 2009 - 02:39 pm, by:  Shane Haverkamp (Havabeer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

did you try taking it for test drive? did it still feel really heavy then?
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 106
Reg: 07-2006

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Sunday, May 03, 2009 - 05:45 pm, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Since last posting, I have sorted the general heaviness. Just bled the system for approx 45min. After 30 min, I was still getting air out. refilled the resevior twice just from air pockets. However, Steering is still very stiff at idle.


Shane: Yes, after I refit all parts every time.
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 10530
Reg: 11-2004

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Sunday, May 03, 2009 - 09:23 pm, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Not sure if it's relevant, but I recall reading there is a valve that is easy to put in backwards.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 107
Reg: 07-2006

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Sunday, May 03, 2009 - 09:24 pm, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yeah pete. I also read that, but for the life of me I cant find the post again. I think my eyes are painted on.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 108
Reg: 07-2006

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Sunday, May 03, 2009 - 09:36 pm, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Russell Rohde wrote on Sunday, May 03, 2009 - 09:24 pm:


Yeah pete. I also read that, but for the life of me I cant find the post again. I think my eyes are painted on.




I was right. First search and found it. only problem Pete is that is the PSP off a V8. The valve is similar, however with the 6cyl engine, the cylinder that the valve is installed into is cast closed at one end (not open at both). The other end has the large 'nutty/bolty' thing that the banjo bolt threads into. So, I guess the only thing to do is spin the valve around and give it a shot.....Whats the worst that can happen......................
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 10532
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Sunday, May 03, 2009 - 10:18 pm, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Good luck with it!
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 109
Reg: 07-2006

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Monday, May 04, 2009 - 08:31 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Cheers mate.

I've Now rotated the valve, found I had it the right way the first time, so i've put it back as it was. Long story short, it steers beautifully as long as the revs are above 1000rpm. A/C off, the car idles at about 400rpm. Short of just adjusting the idle, I'm out of ideas.

How does the solenoid thingie on the steer rack work? is it meant to allow more fluid through at low revs and less at high revs? If when the rebuild was done on the rack, they crossed the wires for the solenoid, could it be letting through little of nil fluid at low revs and excess fluid at high revs?

I've also read another post about the valve getting sticky. I saw this post before doing the pump in the first place. I buffed out the inside of the housting with a 'buffing cylinder' and a dremmel. used some inox and refit the valve. Everything with the valve is correct me thinks.

I'm out of ideas.... I'm grasping at straws here......



I need help...........
Rob Rojo
Goo Roo
NSW
Soarer TT

Posts: 2055
Reg: 12-2007

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Monday, May 04, 2009 - 09:18 am, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Check all you vacuum lines (including the 2 that go to the power steering pump, check that the TPS has not be bumped, reset the ECU and make sure the ISCV is plugged in.
If the car is only idleing at 400rpm your steering will be heavy.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 110
Reg: 07-2006

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Monday, May 04, 2009 - 10:05 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I unsderstand TPS and ECU. What does ISCV Mean?
Rob Rojo
Goo Roo
NSW
Soarer TT

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Monday, May 04, 2009 - 10:10 am, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Its the Idle control valve and sits on the back of the intake manifold.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 111
Reg: 07-2006

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Monday, May 04, 2009 - 10:37 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

***Scale 1-10 (1 being NO power assist, 10 being full assist).


Just did the ECU reset. Revs at about 600. Steer still very heavy till 1000rpm.

Disconnected solenoid (electrically) from rack. Steering lighter below 1000rpm but heavier upward from 1000rpm. At this config, steer assist would be about 4-5 through entire rev range.

With solenoid connected, under 1000rpm power steer is non existant 0-1, and the moment i rev to 1000rpm, steer assist goes to 10. There is no in-between - 1 second no assist, next second, full assist. yet with solenoid out, there is a definite increase in steer assist at idle.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 112
Reg: 07-2006

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Monday, May 04, 2009 - 11:10 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

More fiddling, and more posting.....

I've reconnected the Rack Solenoid and I have adjusted the idle screw behind the TPS so that my bottom rev limit is about 800rpm.

Now for some reason, after more sh1tting around, the power steer is getting lighter at the above mentioned 800rpm. I just had the engine running for about 15-20 min at idle, PS reseviour top off and the fluid appears 'cloudy' even though entire system has been thorought dismantled, cleaned and refilled. Closer look with magnifying glass and the 'cloudy' is lots and lots of tiny tiny air bubbles. thinks I have done everything right, but because I prob didnt bleed the pump and rack of air properly first time, the pump has frothed up the fluid and caused the crux of all my anguish.
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

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Monday, May 04, 2009 - 07:02 pm, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I would have thought those bubbles would have settled out by now. Any chance there is a pin prick leak anywhere?
Chris Round
Tinkerer
WA
Soarer TT JZZ30

Posts: 96
Reg: 06-2008

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Monday, May 04, 2009 - 11:22 pm, by:  Chris Round (Hermie) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

My steering is heavy at idle just like you say, and if A/C is on, the revs are high enough at idle to give assistance.

I thought this was just standard with the soarer?

My VT commodore would increase the revs if I was sitting idle and turned the wheel - so that the power steering would kick in.

However, considering it was a newer car I thought it was just a nice feature, rather than a fault with the soarer.

Can anyone else shed light on this? Is it normal to have heavy steering at idle without A/C on? Or should there be assistance given by way of an increase in revs?

I must say I don't enjoy tapping the accelerator to make fine adjustments when parking, or even selecting neutral to go lock to lock.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 113
Reg: 07-2006

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Tuesday, May 05, 2009 - 10:36 am, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Pete, I've been right through all piping. All looks good and air bubbles are now non existant. I've been doing some solid thinking and feel that I might have the 'egg' shaped price that goes around the vanes in the PSP backward. Only thing though, the metal there has a slight discoloration where it has been sitting and I'm 100% positive it's together right. I can't really explain any more than that without photos and I'm at work at the moment.

And Chris, no. The steering should be very light at idle.
Rob Rojo
Goo Roo
NSW
Soarer TT

Posts: 2065
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Tuesday, May 05, 2009 - 12:39 pm, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

It may be worth trying another Power Steering ECU.
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 115
Reg: 07-2006

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Tuesday, May 05, 2009 - 04:47 pm, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

And it's behond the glovebox right?

also, after reading this post...
http://soarercentral.com/sc-forum/messages/126/44416.html (see second last entry by Mark Paddick), Is he right that there is a vacuum line to the Rack? I have 2 vacuum lines but they both go to the high pressure output from the pump. I did not see when removing or saw when refitting, a vacuum line to the rack itself
Russell Rohde
TryHard
Queensland
Soarer 1JZ 2.5L TT (JZZ30)

Posts: 116
Reg: 07-2006

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Tuesday, May 05, 2009 - 05:15 pm, by:  Russell Rohde (Ax0n) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Another Post I have found is this one...

http://soarercentral.com/sc-forum/messages/126/92228.html

Anyone have any idea where part number 89438 (switch, power steer oil pressure) is located? and what the purpose and function of the Air Valve Assembly is?

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