Front Dif issue?
Just bought a 94 LS (AWD) and it has a slight/soft knocking noise seemly coming from the front dif. I didn't drive the car very far nor very fast so I really can't offer very much information. The car has been sitting for at least a year and my mechanic says I need to drive it and get the engine good and hot before I take it for emissions testing.
Questions: 1. if it is the dif, does it cost as much or more to rebuild the dif compared to doing the 4 point swap? 2. the noise and knock is not very loud nor is there a heavy thunk, of course I haven't had it on the open road yet. It has no license plate. Do I dare risk driving on the highway without knowing what's actually wrong? 3. one cylinder has some "lifter" noise, how big an issue is that? The mechanic says it could go away after the car is driven a while after the oil has been circulating. Any and all advice is welcomed ... Give me a shout! |
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If it is the front diff then it will go from a light knock to a big time noise and vibration in just a few miles. Make sure it has fluid in it. And if it is a 94 LS it wasn't AWD from the factory so I'd look into what transmission it actually has in it and what ratio.
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Does the sound come once per tire rev? It can be many things - brakes, inner/outer CVs, wheel bearing.... Change the oil and look for metal. You can actually see the ring gear teeth thru the level plug.... Small flash light will help. Kind regards, Tapani
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Thanx, |
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In a FWD a 4.44 would be a tire smoking bummer of a car to drive. It could be an axle, easy and cheap to replace. To convert to AWD you need an AWD trans, a driveshaft, an AWD rear subframe, a rear differential and a bunch more labor. |
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Black letters/numbers on the drivers side bell housing by the starter. |
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already asked
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Since you do not know any of the details about the AWD conversion you may want to check if the transmission/front diff have the same gear ratio as the rear diff.
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Thanks everybody, I appreciate all! |
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