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2000 OB 5 speed, 2001 OB LLB, 2008 OB LLB
14 Posts
Discussion Starter · #1 ·
Last week I had my 2008 LL Bean at the dealer where they replaced the ECM.

Yesterday I was driving and got the sense that the speedometer was reading below what I expected. When I compared to my GPS at various speeds, it's about 5-8 mph low. Most speedo errors in my experience read optimistically.

I then noticed that when I turn the car on, the speedo pointer rests below zero. When I started it, I expected it to come up to zero, but it stays in that position. When I begin to drive, it seems to respond quickly and moves through the zero mark at about 5 mph according to my GPS.

Can someone tell me what I am supposed to be seeing as I go through the steps I described above?

It's really bugging me. I plan to call the dealer later today and on the basis that I spent almost $800 on the ECM they'll probably entertain me, but I have little faith in their ability to really know these things. My experience with the dealer's diagnostic skills leaves me doubtful.

Thanks in advance for your reply

Super Moderator
2008 OB Limited 2.5i, Portland OR USA
7,558 Posts
Good post here on the whole system operation - still applicable to Gen 3, I believe:

If the odometer is still operating correctly (this is entirely digital), then I believe your analog gauge in the instrument cluster may be uncalibrated or defective. Since the dealer changed the ECM only, I would start out with them and see if they missed a step.
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