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What is the differential diagnosis for lupus

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Fixya site is not a medical forum
ask your doctor

Posted on May 09, 2017


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What could cause a rear differential Chevy posi-traction - limited slip 3:73 ratio, to make a loud slipping sound, it shudders, shakes the vehicle.I hit a concrete pole with the rear tire

Answer - at a guess - hitting a concrete pole ??? It sounds like you have done some serious internal damage to the diff - take it to a diff repair shop to get a diagnosis??

Oct 30, 2017 | Cars & Trucks

1 Answer

When truck is traveling in a straight-ahead direction,which of the gear rotate

Oh Dang a test.. Whoo hoo. So first there is only one pinion in a differential. So A,B,C is irrelevant. By your questions. But lets look at the questions. A- the pinion turns the ring gear, so it doesn't turn any spider gears.. B- the pinion doesn't come in contact with the shaft. If your talking about the axle. Or any other part, except the ring gear. C- The side gears have to turn, or you have NO movement, Forward or reverse. D- Look at C. So the answer would be D. But look to me for an ASE test answer. I could be wrong. I just look at the problem and fix it. I'm not really a mechanic... I just fix things.

Dec 08, 2014 | Cars & Trucks

1 Answer

I'm having problems getting the 4 wheel drive to engage

It sounds like the front differential is not disengaging. What you will need to do is determin if it is due to the front differential staying locked or the transfer case being engaged. To do this, all 4 wheels will need to be off the ground and the vehicle allowed to coast in gear to determine which it is.

If you look at the front drive shaft and roll the truck on the ground, if the transfer case or the front differential is locked, it will turn either way, so all the wheels will need to be off the ground. If you do not have the resources to do such a diagnosis, please do not jury rig a set up. This is a heavy truck, and you could be injured. A lift is really needed.

Once you know if it is the transfer case or the differential, this will make diagnosis much easier.

Feb 02, 2011 | 1997 Chevrolet Blazer

1 Answer

Hwant to clean the differential breathing tube

On the front differential it plums right off the pumpkin of the differential. On the rear it's by the right side axle tube.

Apr 04, 2010 | 1999 Jeep Cherokee

1 Answer


The first sign would be whining at freeway speeds.
Check the drain plug to see how much metal debris or chunks are struck to the drain plug magnet.
There will be some fine metal ,which is normal.
Lack of fluid( leaks / low level ) or wrong fluid can damage the diff.

Mar 03, 2010 | 2009 Honda CR-V

2 Answers


Your car has what is called a transaxle. This is the transmission and traditional differential in one unit. There is no actual differential per say.

Typically operation noise will occur if the output gears are failing. It will be noisier on the deceleration than the acceleration. This is usually a whining noise. Sometimes this can be jerky during operation.

All of the instances you mentioned can cause a transaxle unit to fail.

Mar 03, 2010 | 1996 Honda Accord

2 Answers


most anything can ruin a differential. usually I can tell once it is apart

Mar 03, 2010 | 2005 Toyota Corolla

1 Answer

Rear end noise when i let off the throttle

Check the U joints, there more common to go bad then the differential, unless you are low on differential fluids. You can take it to a drive line shop and have them replace the u joints and differential fluid and also have them readjust the ring and pin in the differential to give you more life out of the rear end. Good luck and keep me posted. Be glad to answer any questions you may have.

Aug 08, 2009 | 2004 Dodge Ram 1500

1 Answer

Trans axle

Not a problem... I've seen it happen the other way around (depends on the difference between the friction generated by one brake pad/caliper (right/left side) compared to the other against the rotor). The Trans is the 'SLIP DIFFERENTIAL' type.. if the noise is loudest when one wheel is turning while the other is NOT, THEN stop the wheel that's turning to see if the noise goes away when the other wheel turns. If it doesn't, then the problem is in the differential. If it does, further diagnosis is needed.

May 10, 2009 | 2003 Hyundai Tiburon

1 Answer

2003 Explorer AWD front differential goes out

A Tech on "Just Answer" - Ford web site answered it.

Sep 12, 2008 | 2003 Ford Explorer

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