Mechanics

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

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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Denise12
September 13, 2012.




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

Saturntech9
Sep 13, 2012.
I have some codes that Autozone I done with their computer. P0420, P0170, P0171.

Tiny
Denise12
Sep 13, 2012.
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.

Saturntech9
Sep 13, 2012.
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.

Tiny
Denise12
Sep 13, 2012.
Does it drive normal?Have you checked the axle yet?
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Saturntech9
Sep 14, 2012.
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.

Tiny
Denise12
Sep 14, 2012.
They should be able to see if the axle is bad without removing the axle or taking it apart.

Saturntech9
Sep 14, 2012.
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.

KHLow2008
Sep 14, 2012.
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.

Saturntech9
Sep 14, 2012.
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.

KHLow2008
Sep 15, 2012.

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