Fordmods Logo

EL Stiff Differential 

 

Page 1 of 2 [ 16 posts ] Go to page 1, 2  Next

 
 Post subject: EL Stiff Differential
Posted: Fri Nov 08, 2013 3:10 am 
Fordmods Newbie
Offline

Age: 24

Posts: 12

Joined: 26th Sep 2013

Ride: Ford Fairmont Ghia EL

Location: Maroochydore
QLD, Australia

Hey guys,

So I had the back of the fairmont jacked up yesterday putting on new alloys and changing over rotors / pads - when I noticed that both the rear wheels (if you try and turn them when elevated) are super stiff on my fairmont. I tested this and it is not the brake pads or callipers - its just the diff is like super stiff.

I compared this to my donor EB fairmont and I could easily get the prop shaft spinning with one hand turning a wheel...

Does this likely mean I need to change the oil in my diff and / or grease various points in the system?

Would this also account for the awful economy I have been getting?

Would be great to get some expert advice on this as we have a pit so I can get under the car easy enough and I am really eager to do anything to get to the bottom of my fuel economy issue so i don't have to sell the car, as I really want to keep it!

thanks,
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 5:07 am 
Getting Side Ways
Offline
User avatar

Age: 32

Posts: 4583

Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

Hand brake stuck on a bit?

 

_________________

BF XR6
xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 10:54 am 
Getting Side Ways
Offline
User avatar

Posts: 1412

Joined: 21st May 2005

Location: Melbourne
VIC, Australia

Car in park?

 

_________________

EL Fairmont Ghia - Manual - Supercharged
- The Car
- The Headlights

Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 11:02 am 
Getting Side Ways
Offline
User avatar

Age: 40

Posts: 1349

Joined: 21st Dec 2004

Gallery: 40 images

Ride: EF GLi/Ghia bitsa

Location: Melbourne
VIC, Australia

bry40l wrote:
Hand brake stuck on a bit?

+1
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 2:35 pm 
Fordmods Newbie
Offline

Age: 24

Posts: 12

Joined: 26th Sep 2013

Ride: Ford Fairmont Ghia EL

Location: Maroochydore
QLD, Australia

I took the car out of park and put it in neutral and took the hand brake off.

I also disconnected the hand brake on both rear discs - could the hand brake be causing a problem anywhere else up the line?

Basically you can grab each rear wheel and with a lot of effort get them to move about half a turn with your hands and you can see the axle moving and the prop shaft moving aswell - just cant figure out why it is soo stiff because the car drives really nice (but I am getting awful fuel consumption) and going through all the list of maintenance things at the moment to try and find out whats eating my fuel.
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 3:19 pm 
Getting Side Ways
Offline
User avatar

Age: 40

Posts: 1349

Joined: 21st Dec 2004

Gallery: 40 images

Ride: EF GLi/Ghia bitsa

Location: Melbourne
VIC, Australia

I think the handbrake shoes are adjusted up too tight, remove both rear rotors and then see if the axle shafts are easy to turn, if they are, you need to adjust your handbrake.

Gab

EDIT: Just noticed this is my 1200th post lol.
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 4:21 pm 
Fordmods Newbie
Offline

Age: 24

Posts: 12

Joined: 26th Sep 2013

Ride: Ford Fairmont Ghia EL

Location: Maroochydore
QLD, Australia

Congrats on your 1200 post!

is there a way to check this without having to take the rotors off?

The car moves around quite freely with the handbrake off and in neutral if I give it a push etc
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 5:08 pm 
Getting Side Ways
Offline
User avatar

Age: 40

Posts: 1349

Joined: 21st Dec 2004

Gallery: 40 images

Ride: EF GLi/Ghia bitsa

Location: Melbourne
VIC, Australia

BizzleD wrote:
Congrats on your 1200 post!

is there a way to check this without having to take the rotors off?

The car moves around quite freely with the handbrake off and in neutral if I give it a push etc


Just take the rotors off mate it's 1 screw

Gab
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 6:15 pm 
Getting Side Ways
Offline
User avatar

Age: 40

Posts: 1349

Joined: 21st Dec 2004

Gallery: 40 images

Ride: EF GLi/Ghia bitsa

Location: Melbourne
VIC, Australia

You can try pulling the rubber plug out of the rotor and backing off the adjusters, but I find it's easier to remove the rotors to do it

Gab
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Fri Nov 08, 2013 9:53 pm 
Getting Side Ways
Offline
User avatar

Age: 56

Posts: 6467

Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

How is the bush in the back of the tranny ????......just a thought.....

 

_________________

http://youtu.be/jJTh9F3Vgg0

Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Sat Nov 09, 2013 6:55 am 
Technical Contributor
Offline

Age: 67

Posts: 6815

Joined: 22nd Jun 2005

Gallery: 8 images

Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

cjh wrote:
How is the bush in the back of the tranny ????......just a thought.....


Tulip said that's fine, but not sure about the gearbox though.
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Sat Nov 09, 2013 3:53 pm 
Fordmods Newbie
Offline

Age: 24

Posts: 12

Joined: 26th Sep 2013

Ride: Ford Fairmont Ghia EL

Location: Maroochydore
QLD, Australia

Hey - ill try and see if its the hand brake issue and unscrew the rotors and check the rubber bung (one of the rubbers had deteriorated a lot when I first looked could that be part of the problem - ill check the adjusters,

dunno about the transmission bushing but my auto gearbox works great real smooth no issues there.
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Sat Nov 09, 2013 6:34 pm 
Fordmods Newbie
Offline

Age: 24

Posts: 12

Joined: 26th Sep 2013

Ride: Ford Fairmont Ghia EL

Location: Maroochydore
QLD, Australia

OK So I took the rear rotor off and checked the hand brake drum and adjuster and it seems fine.

With the drum off it is still the same stiffness - with the leverage of this hammer I can make a half turn if I put a lot of effort into it.

Anyone think they have an idea of anything I should check please let me know cos I have to do a 3 hour drive on monday at 4am and its costing me double on the fuel bill

I'm spending all day tomorrow changing the fuel filter and engine oil and filter to see if that makes a difference but im sure this stiff rear axle must have something to do with it.

Image

thanks

PS - just a thought - my EL is a tickford one so it doesnt have some non-standard type diff that dont move as much hey?
Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Sat Nov 09, 2013 8:05 pm 
Getting Side Ways
Offline
User avatar

Posts: 1412

Joined: 21st May 2005

Location: Melbourne
VIC, Australia

Do you have both wheels off the ground?
The stiffness is normal if its and LSD.

 

_________________

EL Fairmont Ghia - Manual - Supercharged
- The Car
- The Headlights

Top
 Profile  
 
 
 Post subject: Re: EL Stiff Differential
Posted: Sat Nov 09, 2013 8:13 pm 
Getting Side Ways
Offline
User avatar

Age: 40

Posts: 1349

Joined: 21st Dec 2004

Gallery: 40 images

Ride: EF GLi/Ghia bitsa

Location: Melbourne
VIC, Australia

So it isn't the handbrake then, with an LSD both rear wheels need to be off the ground, I geuss you could have lots of RUST or similar inside your diff, but beyond that there isn't much else.

Gab

EDIT: When you say your car is getting crap fuel economy, what do you mean by that? Don't forget these things have a Big 6 in them and they use a fair bit of fuel as is.

Gab
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 2  [ 16 posts ]  Go to page 1, 2  Next

Who is online

Users browsing this forum: No registered users and 51 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

 

 

It is currently Sat Nov 16, 2024 5:45 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names