1999 Mercury Grand Marquis Odometer Problems - Automotive Wiring and Electrical


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1999 Mercury Grand Marquis Odometer Problems

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trainmaster62
New User

Aug 13, 2016, 1:50 PM

Post #1 of 4 (1649 views)

1999 Mercury Grand Marquis Odometer Problems	Sign In

Hi all. Am new to this site. Test drove 1999 Mercury Grand Marquis today. Speedo works but odometer does not. Am considering buying this car. Do I have to replace the whole cluster or can gears be replaced? Also Needs rear axle pinion seal replaced. Body is in great condition and the price is cheap. Any thoughts would help. Been repairing cars since the 1970's. Thanks,Kevin

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 13, 2016, 3:14 PM

Post #2 of 4 (1640 views)

Re: 1999 Mercury Grand Marquis Odometer Problems	Sign In

Yeah, it's been about that long since they used mechanical odometers.
Just about all of them are electronic now.

You'll probably need a whole cluster.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Aug 13, 2016, 5:01 PM

Post #3 of 4 (1631 views)

Re: 1999 Mercury Grand Marquis Odometer Problems	Sign In

You can send the cluster to a speedometer repair shop and have it repaired. Have you had the vehicle in the air to see how it is doing underneath. Seen a lot of those with ball joint issues. When you go to replace the pinion seal, replace the flange and the nut also. Ford still sells them.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 13, 2016, 5:05 PM)

trainmaster62
New User

Aug 14, 2016, 2:29 PM

Post #4 of 4 (1615 views)

Re: 1999 Mercury Grand Marquis Odometer Problems	Sign In

Thanks for the heads up on the pinion seal flange. Decided to buy the car. Never worked on the 4.6 V8,so I will most likely be asking more questions on this animal. Car price was $1600.00 and I traded a rotted out 99 Bonneville. Got $800.00 for trade so I payed $800.00 plus tax for the car. Thanks again and will post more later...Kevin

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