ml30306

I have posted 2 other threads on this topic, starting a new one since there seems to be more to my problem.

My speedometer will slowly creep up to around 60 mph, then stay "stuck" there until there is a significant reduction on speed. Then the needle will quickly jump down to the "correct" speed. My guess would also be that whenever I exceed 60 mph the needle simply stays and will not move until I actually hit 60 mph again. At that point the speedometer "catches up" with the correct speed again at around 30 mph.

This is what still works in my car:
- Odomoter works normal (on actual and trip A and B mileage)
- Cruise Control

At this point the problem (my guess) could be the vehicle speed sensor (VSS, still trying to find the location of it) or the instrument cluster itself. I have yet to check if the car shifts into 4th gear (I believe it does). I also want to note that a dealership 2 owners ago left a GPS tracker which is behind my coinbox. It is still wired in, active, with the light blinking. I wonder if this unit could be throwing my instrument cluster off?

ANY SUGGESTIONS/COMMENTS ARE GREATLY APPRECIATED!!!

ml30306

MYSTERY SOLVED (a least for my case): I had the GPS tracker removed, no impact. Needle would still not move at any speed above 62. I took the instrument cluster back out, took it apart, manually moved the speedometer needle, it stuck at around 70 and would not return to zero. Apparently the last time I took the instrument cluster apart I tightened the case screws too much since the needle moved freely depending on pressure of the spedometer back plate. Re-assembled instrument cluster, everything seems to work fine now, will probably do another speed test.

LeX2K

Good to hear. It sounded like a speedo cluster failure or problem from the beginning. If the vehicle speed sensor is faulty, you will have all kinds of drivability problems, the transmission will shift erratically for starters.