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Nov 16, 2006 | 11:33 AM

metal_mullisha

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Diff

How can I tell what kinda diff I have in my 02 ford explorer limited? I think it is failing, and need to know how to figure out what kind to order. Also how do I tell if I have limited slip? I changed the oil about a month ago and didn't put any additive in the diff. I also had a flat tire on the hiway and my spare was a different size(bigger) and when I drove my truck would jerk, would this have caused a failure in the diff?

Nov 16, 2006 | 12:09 PM

aquanaut20

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From: BC Canada

Check the tag on the diff,

call the stealer with your VIN, they can tell you

Nov 16, 2006 | 12:42 PM

Steina

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From: Lake Havasu City AZ

Look at your receiver hitch. If it's 1-1/4" with a 4-pin electrical connector, you've got 3.55 rear gears; if it's 2" with a 7-pin connector you've got the 3.73 LS.

How far did you drive with the larger tire?

Steve

Nov 16, 2006 | 03:01 PM

metal_mullisha

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I drove about 60km to the next town with the larger tire.

Nov 16, 2006 | 03:34 PM

Steina

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From: Lake Havasu City AZ

That might've done it, especially if it was sick to begin with - the diff thought you were constantly going around a curve.

What do you have - the 3.55 or 3.73 LS?

Steve

Nov 16, 2006 | 04:55 PM

steve(ill)

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driving with two different size tires is not a real big thing. driving a limit slip differential with out the friction modifier is not a good idea. if you had two different size tires, and the differential is constantly rotating due to the different sizes, AND you have a LS rear end witihout the addative, then you have a problem. The clutches surely took a beating. if it is salvagable by adding the oil now, or needs rebuilt, is hard to say. How does it act now???

Nov 16, 2006 | 09:21 PM

metal_mullisha

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I have the 3.73ls rear end, it just make a noise at a consistant turn/curve. Can I add the additive now, or should I change the fluild again and add it to the oil? How hard is it to change the Diff? does it take along time?