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Drive train

Tiny
JAMES HAMILTON
  • MEMBER
  • 1999 DODGE CARAVAN
  • 3.8L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Okay, I removed the rear drive-line as well as both CV axles eliminating rear differential from equation. Van still makes a grinding noise and bangs really hard on undercarriage. When I turn the rear drive-line output shaft it makes a partial revolution 1/4-1/2 revolution and thinks.
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Sunday, December 23rd, 2018 AT 11:16 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

Do you mean the it stops or locks up?

Please explain what you mean by thinking?

Did you check the axle or hub bearing on all the wheels?

Roy
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Sunday, December 23rd, 2018 AT 11:40 AM
Tiny
JAMES HAMILTON
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  • 7 POSTS
It thunks. Sorry the auto correct put thinks. Yes, I checked the bearings. I thought that it was rear differential. Please refer to earlier question as it's the same problem.
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Sunday, December 23rd, 2018 AT 3:12 PM
Tiny
ASEMASTER6371
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Okay, back to my first response.

Does the output shaft lock up when turning? If it does then it is internal in the differential.

Roy
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Sunday, December 23rd, 2018 AT 3:13 PM
Tiny
JAMES HAMILTON
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  • 7 POSTS
No it does not lock up it just makes a thunk noise. The play is with van in park and not running.
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Sunday, December 23rd, 2018 AT 3:32 PM
Tiny
ASEMASTER6371
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Okay.

Does it make the thunk when you turn the shaft back and forth? It does sound internal in the differential.

Roy
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Sunday, December 23rd, 2018 AT 3:47 PM
Tiny
JAMES HAMILTON
  • MEMBER
  • 7 POSTS
Yes, it make the noise when I move shaft back and forth
Also when driving it grinds and thunk gets faster. Transmission shifts fine. Occasionally when cold it starts moving then stops for a moment shift manually to reverse and nothing back to drive nothing then it engages after moment. Seldom occurs.
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Sunday, December 23rd, 2018 AT 3:58 PM
Tiny
ASEMASTER6371
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Okay, that makes sense.

You will need to open the differential and see why there is too much play in the ring and pinion. It could be bearings or just worn out.

Roy
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Sunday, December 23rd, 2018 AT 4:03 PM
Tiny
JAMES HAMILTON
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  • 7 POSTS
Okay, thanks I will check.
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Sunday, December 23rd, 2018 AT 4:05 PM
Tiny
ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
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Sunday, December 23rd, 2018 AT 4:12 PM

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