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1997 Mercury Sable overdrive

Tiny
SPSHEPHERD
  • MEMBER
  • 1997 MERCURY SABLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 139,650 MILES
Hi guys Well the new tps I put n did not solve my problem I have tried 2 out of the three parts you told me to try and with no success. Could you please look at my pass question and help me I am at my wits end thank you patti shepherd
Monday, October 25th, 2010 AT 7:52 PM

14 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Yuo should reply to your previous post so that the history of correspondence are intact and the person attending to you can get back to you when he is notified.

I have transferred your question to your previous post and racefan966 should get back to you once he is online.
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Tuesday, October 26th, 2010 AT 8:39 AM
Tiny
SPSHEPHERD
  • MEMBER
  • 12 POSTS
I AM SORRY I SHOULD HAVE SAID THE PARTS THAT I HAD ARADY REPLACED. IT STARTED WITH THE SPEEDOMETOR SENSOR, THAN I REPLACED THE TSP SENSOR AND I STILL HAVE KNOW OVERDRIVE. I CAN'T REMEMBER THE OTHER PART THAT YOU GUYS SAID TO TRY. COULD YOU PLEASE GET BACK TO ME THANK YOU PATTI YOU HAVE BEEN A GREAT HELP SO FAR I JUST NEED TO GET MY OVERDRIVE BACK. AS I SAID BEFORE I DON'T HAVE A BUTTON ON MY FOR OVERDRIVE.
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Wednesday, October 27th, 2010 AT 11:54 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
You did not followup with racefan966 on his reply in your original post.

The transmission model you have on your vehicle is AX4S.

I have sent you the diagnostic file for testing/checking what could be wrong resulting in no OD (4th speed).

Since problem occurred after replacement of the speed sensor, the wire haring harness would be the prime suspect. Check them for contaminations etc.

Let me know how it goes.
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Wednesday, October 27th, 2010 AT 6:58 PM
Tiny
SPSHEPHERD
  • MEMBER
  • 12 POSTS
DEAR KHLOW2008, I AM SORRY I DON'T HAVE A SPEEEDOMETOR CABLE SO YOU ARE SAYING I NEED TO CHECK MY WIRES THANK YOU. I DON'T KNOW IF IT HAS THE ORIGINAL TRANSMISSION IN IT I BOUGHT IT USED. THANK YOU FOR YOUR TIME. I WILL DO THE BEST I CAN WHAT DOES VVS MEAN RACEFAN66 TOLD ME THERE WERE THREE THINGS THAT CONTORL YOUR OVERDRIVE WHAT IS VVS AND WHERE IT PLEASE
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Thursday, October 28th, 2010 AT 10:18 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
It should be VSS, vehicle speed sensor and is mounted on the transaxle.

If the speedometer is working correctly, then this should not be the cause.

Yes, check the wireharness to confirm none are loose or contaminated.
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Thursday, October 28th, 2010 AT 11:32 AM
Tiny
SPSHEPHERD
  • MEMBER
  • 12 POSTS
Dear sir thank you so much for your help I have one more thing that is bugging me where should my RMPS needle be when I am in overdrive.I am running at 3000mph whenI am going 65rmh is that where I should be or is it still not going into overdrive thank you for your help again.
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Monday, November 1st, 2010 AT 1:50 PM
Tiny
KHLOW2008
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Vehicle should already be in 4th speed at 3000 rpm and road speed of 65 mph.
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Monday, November 1st, 2010 AT 7:07 PM
Tiny
SPSHEPHERD
  • MEMBER
  • 12 POSTS
Thank you sir I think I am going to try a new speed sensor, the guy at advance auto parts said it could be a defective speed sensor seen my overdrive worked before I replaced it again thank you for your return info and god bless you patti
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Tuesday, November 2nd, 2010 AT 5:38 AM
Tiny
KHLOW2008
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Hi Patti,

It is possible for the VSS to cause the OD not to engage but this would be coupled with harsh shifting.

Have you tried to retrieve for trouble codes?
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Tuesday, November 2nd, 2010 AT 7:44 AM
Tiny
SPSHEPHERD
  • MEMBER
  • 12 POSTS
Dear khlow2008 thank you for replying so fast I did have the codes check and the only thing that was coming up was something to do with the exhaust system. I had the tech at advanced auto check it I don't exactly know what number the code was he just said it had to do with the exhaust. Will it hurt my tranmission if I keep driving it even though it will not go into overdrive? I can't afford to take it to a tranmission shop right now. I only drive it to the store and to take my daughter to work. I can't thank you enough for your direction you have given me. Again thank you for your time. Sincerely Patti
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Tuesday, November 2nd, 2010 AT 10:30 AM
Tiny
KHLOW2008
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You're welcome.

If the driving time and distance is not long and far, it would not hurt the transmission, though the gas bill would be.

The engine has to run more while getting less distance.

Could it be that the OD is working but the new speed sensor is not correct and giving a false speed reading?
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Tuesday, November 2nd, 2010 AT 10:43 AM
Tiny
SPSHEPHERD
  • MEMBER
  • 12 POSTS
KHLow2008, hi again, well I looked up the type of VSS that Advanced auto parts gave me this is the brand and part number, BWD Sensor part # S8058P. Is this the right sensor for my car? I checked all the other ones and they are eather for a car w/ speed cable or they are to big. I think I am going to try a new sensor. Get back to me please if this is not the right sensor. Thanks so much for your continued help your a great guy. Sincerely patti
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Tuesday, November 2nd, 2010 AT 8:06 PM
Tiny
KHLOW2008
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You don't have to keep thanking me. When a job needs to be done, I will always give it my best shot. Seems my best is not good enough yet.

Our database only have the OEM part number and after market numbers are not listed so I am not able to comment on it.

OEM part no = F5DZ7F293BA ( $136.58). Check with Advance Auto if the part provided is equivalent.

Since problem started with replacement of the sensor, guess the most appropriate thing to do is to try another VSS.
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Wednesday, November 3rd, 2010 AT 7:38 AM
Tiny
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  • 12 POSTS
Ok I willl let you know soon
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Wednesday, November 3rd, 2010 AT 9:47 AM

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