Rpm speedometer needles drop
Okay so this has been very aggravating and idk what to try but here is the problem I'm having. While driving my rpm needle and mainly my speedometer drops down to 0 then trys to jump back up to where its suppose to be but fails so it just bounces around mainly when it's hot cuz it dont do it right off the bat when u take off only after few mins of driving. Here's the funny part I have no check engine codes my alternator and battery is fine I did have a engine code show first day I noticed it said was a misfire on 4 but that went away quick idk what to do I figured the speed sensor but that would give engine code right and not cause my rpm to do the same but overall my car drives just fine so idk what it could be