barza21
15+ Year Contributor
- 146
- 46
- Oct 11, 2006
-
Fairbanks,
Alaska
Hello All,
It seems like there have been some issues with bouncing tachs over the years, but a lot of them seem to apply to the 1990s models. In my case, I own a 1991 (with ECMLink) and noticed this happening some time ago, but forgot about it. The drive on the way home revealed the tach bouncing around if I kept the RPM steady at about 4k. I will attach the video to this post. I will check the wiring this weekend, but was wondering if anybody has dealt with this lately and have some knowledge that could be shared with me. As part of troubleshooting a different problem, I have tested and replaced the coils, PTU, and CAS. I've checked wiring and nothing stood out, but clearly I possibly missed something since this is acting up. Any ideas will be greatly appreciated.
Thank you,
Oscar
It seems like there have been some issues with bouncing tachs over the years, but a lot of them seem to apply to the 1990s models. In my case, I own a 1991 (with ECMLink) and noticed this happening some time ago, but forgot about it. The drive on the way home revealed the tach bouncing around if I kept the RPM steady at about 4k. I will attach the video to this post. I will check the wiring this weekend, but was wondering if anybody has dealt with this lately and have some knowledge that could be shared with me. As part of troubleshooting a different problem, I have tested and replaced the coils, PTU, and CAS. I've checked wiring and nothing stood out, but clearly I possibly missed something since this is acting up. Any ideas will be greatly appreciated.
Thank you,
Oscar
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