Go Back   Horizons Unlimited - The HUBB > 4 wheels > Toyota Overland Tech

Toyota Overland Tech All Toyota's TECH discussions and info.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

Visit Matt Savage for VIAIR compressors, Air Lift Helper Springs, Tyre Levers, Chris Scott's Books & DVDs, KC Daylighters, Allisport Intercoolers, Overland Preparation and lots more!

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 25 Dec 2009
Registered Users
Veteran HUBBer
 
Join Date: Feb 2007
Location: East Sussex UK
Posts: 113
80 series Auto box temperatures

hello all,

On a recent trip to the Gilf & Karkur tahl I suffered some temperature problems with my auto box (A442F).
This only happened in very extreme situations on long slogs through soft sand, generally the ambient air temperatures were in excess of 40c, and often any breeze was from behind.
I wasnt travelling fast enough to get lock up in top gear.
As the ATF temperature rose, the easiest way of dropping it again was to drive in low box for a while, this dropped the atf temp quite quickly as I assume the box locked up and the fluid cooled, but it was a bit of a pain doing this regularly.
The fluid was new, mesh filter clear and additional coolers are fitted, I think it was just the combination of long stretches of soft sand and high air temperatures, in other words, pretty extreme conditions.
I have been looking at the wholesale automatics 3rd & 4th gear lock up kit, has any body any experience of this or fitted one, (costs??) any info greatly appreciated so I can get things sorted before my next trip.

Am I right in thinking that this will overcome the problem by locking the box up in 3rd, and therefore reducing slippage?

The car is a '94 landcruiser 80 VX diesel with A442F auto box
Reply With Quote
  #2  
Old 20 Feb 2010
Registered Users
HUBB regular
 
Join Date: Nov 2008
Location: Oxford, UK
Posts: 26
In Egypt now

Hello

I am in Egypt in a 1991 VX 80 like on the A442F and have trouble with the ATF temp light coming on. The gearbox is not working properly from 3rd upwards. The oil condition is okay and at the moment adjusting the TV cable is not helping.

I have the Wholesale Automatics valve chest fitted and the whole gearbox was rebuilt about 10k km ago. I also have an extra Kenlowe ATF cooler fitted.

I have an Allisport intercooler fitted, the ARB winch bumper and winch. Is this preventing enough wind from passing through? I should think I am not the only person with this setup. Whilst the Intercooler has improved economy, I am suspicious that is may be slowing down the air-flow pass the radiators.

This is a real problem as the temp outside is only 25C and Africa will only get hotter! We were on our way to SA for the World Cup but now I'm not so sure that we will make it. Boo hoo for me eh?

The man that rebuilt the gearbox says that it sounds like a valve chest or governor problem.

So this is my experience of the Wholesale kit. Nothing is certain other than this is a real pain in the aerse as it worked fine for 6k km. Within the first 100km in Tunisia the gears stopped functioning as they should. We have driven to Marsa Matrouth with endless fiddling and pulling over to cool and now I do not know what to do.

Should have bought a Land Rover....

t
Reply With Quote
  #3  
Old 21 Feb 2010
Registered Users
Veteran HUBBer
 
Join Date: Feb 2007
Location: East Sussex UK
Posts: 113
Have put a link to your post on TLOC, hope you get some helpful response

Toyota Landcruiser Owners Club (UK) :: View topic - Auto Box Problem In Egypt any help??

Andy
Reply With Quote
  #4  
Old 22 Feb 2010
Registered Users
Veteran HUBBer
 
Join Date: Apr 2001
Location: London (UK)
Posts: 772
Quote:
Originally Posted by kayamtom View Post
Hello

I am in Egypt in a 1991 VX 80 like on the A442F and have trouble with the ATF temp light coming on. The gearbox is not working properly from 3rd upwards.
Hello,
  1. Does the problem occur in high range only or both high and low?
  2. Do you have an extra ATF cooler fitted?
  3. Have you positively eliminated false readings from the temp gauge?
__________________
Roman (UK)
www.overlandcruiser.com
Reply With Quote
  #5  
Old 22 Feb 2010
Registered Users
New on the HUBB
 
Join Date: Jan 2010
Location: Stourbridge, England
Posts: 1
I had a Wholesale Automatics valve body in my 80 which performed flawlessly. That 80 has gone and I swapped the valve body onto my wife's 80 just this weekend.

When you say 3rd upwards isn't working right, can you explain that a bit more? Is overdrive engaging and is it just torque converter lock up that isn't working? Problems with torque converter lockup very quickly lead to overheating.

If the torque converter isn't locking up there are a number of things you can test but I don't want to write all that up if in fact it's more than that.

Are there any other warning lights flashing at you? Does the OD light go on and off ok when you press the OD button? Do you even have an OD button?
Reply With Quote
  #6  
Old 22 Feb 2010
Registered Users
HUBB regular
 
Join Date: Nov 2008
Location: Oxford, UK
Posts: 26
Hello,
Thanks for the replies. As for the questions..

1.Does the problem occur in high range only or both high and low?

I've not had the chance to check if the problem occurs in low range. I should check for sure but have been reluctant to get too involved in anything away from roads just in case.

2. Do you have an extra ATF cooler fitted?

Yes. It is located left hand side behind an ARB bumper halfway in the gap there. It should see quite a bit of wind there, possibly more than the standard cooler.

3. Have you positively eliminated false readings from the temp gauge?

No, and I am a little suspicious of the sensor. I am suspicious of all temp sensors as the engine gauge always reads slightly less than half. The colour of the gearbox oil does seem to be getting worse.

The ambient temp has a big effect on the light coming on. One day at 20C is okay next at 25C no good. More than 50mph and the problem quickly gets worse. I have had a little joy slacking the TV cable right off but not had the warmer temps since. Inside the car you can really feel the heat from the gearbox when running for any length of time.

We are now in Cairo and hope to have some time to research and maybe find a Auto specialist but I am not 100% happy that we have done enough to determine the problem. I may go for an ATF change and head back out to see what happens? Come back if it looks no better?

I have written to Rodney at Wholesale Automatics but have had no response as yet. It was always a long shot doing so but he might have something.

Thanks again,

tom
Reply With Quote
  #7  
Old 23 Feb 2010
Registered Users
Veteran HUBBer
 
Join Date: Sep 2007
Location: Cairo
Posts: 304
You know there is a big new Toyota dealer/workshop out on the Ring Road in Cairo now?
Would they help at all?
Reply With Quote
  #8  
Old 23 Feb 2010
Registered Users
HUBB regular
 
Join Date: Nov 2008
Location: Oxford, UK
Posts: 26
Hello,

This new Toyota place is getting a reputation.. I hope that I can add to the good reports with an amazing obvious trip changing and cheap fix after visiting tomorrow.

Thanks for the pointer.

t
Reply With Quote
  #9  
Old 28 Feb 2010
Registered Users
Veteran HUBBer
 
Join Date: Apr 2001
Location: London (UK)
Posts: 772
Hi,

> More than 50mph and the problem quickly gets worse.

This seems to be due to torque converter not locking up. At this temperature the temp should always drop, not rise, provided the TC is locked.
Is your TC manually lockable?
__________________
Roman (UK)
www.overlandcruiser.com

Last edited by Roman; 1 Mar 2010 at 11:39.
Reply With Quote
  #10  
Old 13 Mar 2010
Registered Users
New on the HUBB
 
Join Date: Feb 2010
Location: Spain
Posts: 4
Not much help I know but for future users........I was in the market for an LC 80 but wanted a manual one because IMHO they are more reliable on long trips/heat ect. After searching for quite awhile it appeared I would have to plump for an automatic, so I contacted Wholesale Automatics for some advice and got nothing back! I tried again, and nothing! I wanted some more info about the reliability of the extreme valve body and how to improve the automatics chance of survival in high temperatures and nothing!

Sat it out and found a manual 4 weeks later, BTW still no reply from them, perhaps they did not get my emails?

regards

Dave
Reply With Quote
  #11  
Old 20 Apr 2010
Registered Users
New on the HUBB
 
Join Date: Mar 2010
Location: Enfield
Posts: 19
Are manuals really more reliable
Reply With Quote
  #12  
Old 3 May 2010
Registered Users
Veteran HUBBer
 
Join Date: Sep 2004
Location: London
Posts: 144
You may find driving in high range 2nd helps or if you have the overdrive button on the side of the shift lever, take the o/d off.

High range 2nd certainly helped me on the one occasion my a/t got a little hot.

Jeremy
__________________
pigapitcha

http://www.jljphotography.co.uk
Reply With Quote
  #13  
Old 18 May 2010
Registered Users
Veteran HUBBer
 
Join Date: Nov 2009
Location: J10 M40 UK
Posts: 268
I am not an expert on toyota autos, but generally speaking , autos generate heat in two ways, normally thru torque converter slippage, which is normal, but this is eliminated when it is locked up (but only usually available in higher gears). That is why you should lock down into lower gear and slow down to get it to cool, lower gear gives less slippage in the torque converter. The other is thru band slippage (not meant to happen) so not good.
Another thing is there is a heat exchanger in the radiator, that helps the auto get to working temp quicker, and also helps cool it in high ambient, or working hard. Even manual L/C get hot if operating hard in sand etc, in high ambient (35+) if the aircon is on as the condensor sits in front of the radiator. So turning off the aircon also helps keep the temp of engine and trans lower. As mentioned fitting an extra trans cooler can help, but you need it either infront of all the rads so air gets drawn thru by engine fan, or fit it with its own electric fan, as usually its at low speed when you need it most (eg pulling hard, mud, sand etc) . Another good idea is to go to a full synthetic trans oil (eg Redline) as normal mineral will cook very quickly and causes quick build of varnish which results in valve body probs etc. You can see just by checking your trans oil if it does not look a nice pink but brown or caramel type colour . HTSH
__________________
Current : 1986 110 CSW 3.0Tdi6, 1991 90 300tdi auto, 1999 Rangerover 2.5 dse auto, 2001 Freelander TD4 Auto
Reply With Quote
  #14  
Old 28 May 2010
Registered Users
Veteran HUBBer
 
Join Date: Sep 2004
Location: London
Posts: 144
a/c

Apart from anything else, sitting with windows shut and aircon on will dehydrate you in record time. Waste of fuel, heat and body fluid. Think how dreadful you feel after a long flight...
__________________
pigapitcha

http://www.jljphotography.co.uk
Reply With Quote
  #15  
Old 18 Jul 2010
Registered Users
New on the HUBB
 
Join Date: Feb 2010
Location: Spain
Posts: 4
Quote:
Originally Posted by locrep View Post
Are manuals really more reliable
In a word.....YES!

regards

Dave
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Temperatures in Morocco Piotr Sahara Travel Forum 8 1 Aug 2009 14:30
High Temperatures and a Diesel Engine firstimeflyer 4WD Overland Tech 4 18 Jun 2009 08:27
night-time temperatures in Morocco ukiceman Sahara Travel Forum 8 9 Oct 2008 23:01
GSX 1300 R oil temperatures Stuart P Suzuki Tech 2 7 Jun 2005 08:06
temperatures and rain fall across the continent dom Sahara Travel Forum 1 13 Nov 2002 02:34

 
 
 

NEW! HU 2015 Motorcycle Adventure Travel Calendar is now available! Get your copy now for some terrific travel inspiration!

HUGE, 11.5 x 16.5 inches, beautifully printed in Germany on top quality stock! Photos are the winning images from over 600 entries in the 9th Annual HU Photo Contest!

Horizons Unlimited 2015 Motorcycle Adventure Travel Calendar.

"The calendar is magnificent!"

"I just wanted to say how much I'm loving the new, larger calendar!"

We share the profit with the winning photographers. YOU could be in the HU Calendar too - enter here!


HU DVD Autumn Special!

Take 40% off Road Heroes Part 1 until October 31 only!

Road Heroes features tales of adventure, joy and sheer terror by veteran travellers Peter and Kay Forwood (193 countries two-up on a Harley); Dr. Greg Frazier (5 times RTW); Tiffany Coates (RTW solo female); and Rene Cormier (University of Gravel Roads).

The first in an exciting new series, Road Heroes features tales of adventure, joy and sheer terror by veteran travellers."Inspiring and hilarious!"

"I loved watching this DVD!"

"Lots of amazing stories and even more amazing photographs, it's great fun and very inspirational."

"Wonderful entertainment!"

Check it out at the HU Store! Remember to use Coupon Code 'HEROES' on your order when you checkout.


Renedian Adventures


Renedian Adventures

What others say about HU...

"I just wanted to say thanks for doing this and sharing so much with the rest of us." Dave, USA

"Your website is a mecca of valuable information and the DVD series is informative, entertaining, and inspiring! The new look of the website is very impressive, updated and catchy. Thank you so very much!" Jennifer, Canada

"...Great site. Keep up the good work." Murray and Carmen, Australia

"We just finished a 7 month 22,000+ mile scouting trip from Alaska to the bottom of Chile and I can't tell you how many times we referred to your site for help. From how to adjust your valves, to where to stay in the back country of Peru. Horizons Unlimited was a key player in our success. Motorcycle enthusiasts from around the world are in debt to your services." Alaska Riders

contest pic

10th Annual HU Travellers Photo Contest is on now! This is an opportunity for YOU to show us your best photos and win prizes!

NEW! HU 2014 Adventure Travel T-shirts! are now available in several colors! Be the first kid on your block to have them! New lower prices on synths!

HU 2014 T-shirts now in!

Check out the new Gildan Performance cotton-feel t-shirt - 100% poly, feels like soft cotton!


What turns you on to motorcycle travel?


Global Rescue, WORLDwide evacuation services for EVERYONE

Global Rescue is the premier provider of medical, security and evacuation services worldwide and is the only company that will come to you, wherever you are, and evacuate you to your home hospital of choice. Additionally, Global Rescue places no restrictions on country of citizenship - all nationalities are eligible to sign-up!


New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80 G/S motorcycle.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events (22 this year!); we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, the HUBB or to receive the e-zine. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.


Books & DVDs

amazon

All the best travel books and videos listed and often reviewed on HU's famous Books page. Check it out and get great travel books from all over the world.


Motorcycle Express for shipping and insurance!

Motorcycle Express

MC Air Shipping, (uncrated) USA / Canada / Europe and other areas. Be sure to say "Horizons Unlimited" to get your $25 discount on Shipping!
Insurance - see: For foreigners traveling in US and Canada and for Americans and Canadians traveling in other countries, then mail it to MC Express and get your HU $15 discount!




All times are GMT +1. The time now is 04:07.