Mercury Grand Marque 2002 V8 160,000 miles

Tiny
GOLFACE7
  • 2002 MERCURY MARQUIS

My car seems to vibrate at different speeds. Its not tires because its a quick vibration or shaking. At first I thought it was just the road. I had the rear axels replaced and shortly after that I started noticing a vibration that felt like the road was a washboard. I did not think nothing of it then it started happening more. It feels just like you run over a washboard road for a split second sometimes longer. I would turn around and go back over the same spot to see if it was the road and I could not make it do it. My coils are going bad but that is a miss not a vibration. Any know problem with these cars that cause this.

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Thursday, February 1st, 2007 AT 7:56 PM

5 Replies

Tiny
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Would you call it a shudder? Is it more consistent at the same speed or gear shifting point?

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Friday, February 2nd, 2007 AT 6:07 AM
Tiny
GOLFACE7
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Well you might call it a shudder. Feels more like I ride over a wash board. It does not have anything to do with shifting, it is not at a shift point. It happens at different speeds. However Higher speeds are more agressive wash board feel. Today I noticed more coughing of the bad coils and feel that might have something to do with it. But again its like driving over a bunch of ripples in the road. Like the ripples to warn you you are going off the road.

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Friday, February 2nd, 2007 AT 9:39 PM
Tiny
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I think the starting point on this is to retreive the codes from the computer to start narrowing it down.

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Saturday, February 3rd, 2007 AT 7:59 AM
Tiny
GOLFACE7
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Well took it to the dealer today and no codes listed but after driving it I had two problems. One number 6 coil bad and transmission converter going bad.

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Saturday, February 3rd, 2007 AT 10:43 AM
Tiny
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That was why I asked about the shudder, there is a tsb on the converter for that. Glad to hear your success.

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Saturday, February 3rd, 2007 AT 11:36 AM

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