I have a 1992 integra LS. Just have repair shop install a new clutch. Now I am getting crazy reading on my tach. The tach will jump up to 5 and then back down again. Any ideas as to what's going on and if new clutch work could be the culprit? Thanks, George

 

check your grounds

 

update... one more thing. Found a couple weeks ago, a mechanic removed the battery and when re-installing, car would not start. They replaced the "ignition module" and car starts ok now...but getting the tach jumping up. Could this be related. Thanks again. George