My guess would be the transmission bands are slipping. This would cause what you describe. First check the transmission fluid and make sure it is full. Check it according to the instructions in your owners manual. If you only had an issue with the tach I would suspect a loose ground wire, but considering the transmission is acting up you more than likely have a transition issue that is just being reflected in the tach.
It is really hard to tell exactly what is wrong. But the transmission issue makes me very suspect of an issue there. Your transmission problem is much more important and potentially expensive than the tach problem. You need to have this looked at by an expert before more additional damage is done. The tach problem is minor and can always be fixed after your transmission is looked at.
×
562 views
Usually answered in minutes!
Mr. Clay, thanks for your response. I will check the fluid level today and see where it is at. Something that I thought of after my post is that I hear a rattling noise perhaps coming from the transmission during the quick acceleration in conjunction with the bouncing tach and odd transmission shifting. I saw a post on the Internet referring a sun gear. Do you suppose that could be an issue if the fluid level is ok? Also someone mentioned a part that is supposed to be clamped back in the intake manifold after the gasket is changed and if not done so could cause a tach problem as well. I know it's hard to tell from a message but any info or suggestions would be greatly appreciated. Thanks for your time!
×