I WANT TO KNOW WHY IT GRINDS WHEN I PUT IT IN REVERSE AND WANT MOVE.

  • Tiny
  • denise12
  • 1997 Acura CL
  • 2,011 miles

One day all of a sudden the front driver side started squeaking then when I put it in reverse it started grinding and wouldn't back up. But will go forward.

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Thursday, September 13th, 2012 AT 8:37 PM

11 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,852 posts

Sometimes the reverse dog clutches fail on those. Do you have any codes?

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Thursday, September 13th, 2012 AT 8:51 PM
  • Tiny
  • denise12
  • Member

I have some codes that Autozone I done with their computer. P0420, P0170, P0171.

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Thursday, September 13th, 2012 AT 9:05 PM
  • Tiny
  • saturntech9
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  • 29,852 posts

Looks like a cat code with the P0420 and the P0171 is system too lean I dont see. P0170 code maybe you remembered or wrote down the wrong number.

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Thursday, September 13th, 2012 AT 9:10 PM
  • Tiny
  • denise12
  • Member

So wht do you think the problem is I think it's the brakes and not the transmission. What do you think it is from what I told you it was doing.

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Thursday, September 13th, 2012 AT 9:18 PM
  • Tiny
  • saturntech9
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  • 29,852 posts

Does it drive normal?Have you checked the axle yet?

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Friday, September 14th, 2012 AT 4:34 AM
  • Tiny
  • denise12
  • Member

Yes it drives normal and someone came and check it today and they said it might be the cd joint or the axle. So they say they was going to come back and takte it a loose to see where is the problem.

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Friday, September 14th, 2012 AT 4:55 AM
  • Tiny
  • saturntech9
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  • 29,852 posts

They should be able to see if the axle is bad without removing the axle or taking it apart.

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Friday, September 14th, 2012 AT 5:16 AM
  • Tiny
  • KHLow2008
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  • 41,994 posts

Saturntech9, some scan tools would show a P0170 when P0171 or P0172 is present.

If the axle is bad, you would not be able to drive at all.

Were there any crocking noise while making turns prior to this?

Symptoms indicates a possible wheel bearing failure.

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Friday, September 14th, 2012 AT 5:42 PM
  • Tiny
  • saturntech9
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  • 29,852 posts

The code thing makes sense some of the cheaper scan tools will read incorrect codes sometimes. As far as a bad wheel bearing I can't see that only allowing the car to go forward and not reverse. Also while driving forward it would make a lot of noise. Even the axle would I know the hondas have reverse dog clutches issues when they fail they produce those symptoms. Which the acura would fall into that honda catogorey. Use a long screwdriver to see where the noise is coming from.

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Friday, September 14th, 2012 AT 7:11 PM
  • Tiny
  • KHLow2008
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  • 41,994 posts

When wheel bearings fails, thay can result in too much much side way movement of the rotor and this can get caught by the calipers. Moving in one direction is easier than the opposite. If a lower arm ball joint fails, it can cause the same problem as the axles would be stretched and this can cause the inner CV joint tripod to catch in one direction.

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Saturday, September 15th, 2012 AT 8:41 AM

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