Is Your Front or Rear Differential Failing?

Rear Differential Cutaway

Although most makes and models come standard with a rear differential some problems can still arise if you have a front differential. Ideally, the front differential should last the lifetime of the vehicle but as we know not all ideas come to fruition.

So what does a differential failure mean? Usually a rear differential problem can easily be found. The first thing you want to do is check the oil in your rear differential and if it needs to be replaced then that should be the end of it.

The actual fix of the problem may be a bit more intricate than expected. You’re going to need tools including a standard metric set, gasket scraper, oil pan, floor jack and more.

Note: If you don’t have access to these tools then it would be best to bring it in to 2J’s Automotive and let the mechanics solve your cars problems quickly and efficiently.

Now the front differential could be a completely different story. An often missed warning sign of failure is a loud “clunk” when shifting from drive to reverse then back to drive again. Basically any excess noise coming from the front of your car that doesn’t sound like a brake problem should be inspected immediately.

Complete failure could lead to total disabling of the drivetrain, which basically means your automobile would completely lock up. Victims who have experienced this problem on the highway have said that you’ll be lucky if you’re able to get your car to the side of the road.

What’s the main cause for this? It’s misalignment causing too much stress on the driveshaft and input. If you think you’re experiencing this problem then bring your car into the shop at 2J’s Automotive. The professionals will give your car a free diagnostic test ($80 value) and find out what exactly is wrong with your car.

Send us an email if you have questions regarding your differential and don’t forget to get signed up for our drawing to win a FREE 19” Vizio Flat Screen HDTV. On March 30th one winner will be drawn at noon so give us a visit to get signed up or you can register here.

7 responses to “Is Your Front or Rear Differential Failing?”

  1. mojtaba says:

    i need to information about standard for measuring noise of differential . how we can test of noise ? do we need to aquatics box for put axle in it ? which instrument is suitable for noise testing ? if is possible for your company help me.

    thanks a lot

  2. Diane says:

    My car as a leak I was told its front differtial fluid.

  3. Heather says:

    My son has a 91 Toyota 4×4. We just had a new engine put in it. We have replaced the water pump, clutch, airflow sensor brakes calipers etc etc. This truck has been a freaking nightmare and now we have a mechanic telling us the rear differential is going out. I do not trust this mechanic and don’t know what to do. I’m thinking it’s time to sale the truck. What exactly is the rear differential and please feel free to talk to me like a kindergardener. Is it time to get rid of the truck? We can not afford any more issues with this vehicle. My husband is deployed and the mechanic already pulled a fast one with the engine so I don’t trust him at all.

    • admin says:

      The rear differential is the rear drive axle and gears. What will happen is it will start making noise due to bearing wear or the gears starting to wear out. If it is going out it should be making a roaring noise. Do not let him put a used rear differential in because it can be rebuilt and most likely needs a bearing and seal kit due to bad bearings. Feel free to contact me to discuss if you need to.

  4. TONI says:

    My 2005 HONDA CRV is making a horriblr noise whenever I turn and mechanic suspect it the differential, however he suggets it has to be replace.
    why would this be and not the fluids needs to changed?

    • admin says:

      If a bearing is bad in the differential they need to be replaced. Fluid alone will not fix this problem. You can rebuild the diff rather than replace which would be less expensive. The noise could also be in the transmission, you need someone who specializes in transmissions to diagnose.

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